SGP/AERI/C1 - laser and cooler failure

On January 8, 2005 the laser failed on the AERI. After it was repaired and during 
calibration, the cryogenic cooler and its spare also failed. The instrument has been off-line 
since the failure.

• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  that are not saturated(integ_resid_ch_unsat)
• hatch_open_is_true and hatch_closed_is_false(valid_aeri_data)
• Time offset from base_time(base_time)
• Sequential data channel number. See channel_explanation global attribute.(channel)
• Time offset of tweaks from base_time(time_offset)
• east longitude for all the input platforms.(lon)
• Logical flag indicating if the AERI sample was used to derive the surface
  temperature value for driving the model(surface_temp_from_aeri_used)
• altitude above sea levelaltunits(alt)
• Retrieved sample time (current sample time) minus sonde launch time(sonde_offset_time)
• wavenumbers for spectral differences(wavenumber)
• Average of brightness temperatures calculated from AERI radiances within
  spectral windows, ch1:[1142.20,1147.03] & ch2:[2506.20,2511.02](mean_AERI_BT)
• north latitude for all the input platforms.(lat)
• AERI radiance spectra minus LBLRTM radiance spectra(rad_difference)
• Indicator of large residuals in channel 1 transparent region(transparent_region_dq_flag)

• For each bin, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_bin)
• For each channel, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_ch)
• Sequential data channel number. See channel_explanation global attribute.(channel)
• Physical process number used as a coordinate in the process dimension(process)
• Time offset from base_time(base_time)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_ch_pro)
• The average of mean_hour_rad computed for the set of wavenumbers within a
  particular bin for a fixed physical process as given in the spectral mapping
  function listed i(mean_rad_bin_pro)
• The standard deviation of the AERI spectral radiances about the hourly averaged
  mean(sdev_hour_rad)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_all)
• east longitude for all the input platforms.(lon)
• wavenumbers for hourly averaged spectral radiances(wavenum)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_bin_pro)
• north latitude for all the input platforms.(lat)
• The average of mean_hour_rad computed over the entire wavenumber spectrum
  between 520.2368 and 3020.1699(mean_rad_all)
• The average of mean_hour_rad computed for the wavenumbers within each bin
  (sub-band)(mean_rad_bin)
• The average of mean_hour_rad computed over the wavenumbers for each of the AERI
  channels(mean_rad_ch)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_pro)
• The standard deviation of mean_hour_rad about mean_rad_bin for the wavenumbers
  within each bin (sub-band)(sdev_rad_bin)
• The average of mean_hour_rad computed for the wavenumbers which are mapped to a
  particular physical process as given in the spectral mapping functions
  listed in the global(mean_rad_pro)
• For each bin, this gives the total number of active physical processes out of
  the 12 defined for the process field (NOTE 0-indeterminate is counted)(nactive_pro_bin)
• Bin number for wavenumber sub-bands used as a coordinate in the bin dimension(bin)
• hatch_open_is_true and hatch_closed_is_false(valid_aeri_data)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_bin)
• The standard deviation of mean_hour_rad about mean_rad over the entire
  wavenumber spectrum between 520.2368 and 3020.1699(sdev_rad_all)
• altitude above sea levelaltunits(alt)
• Standard deviation of mean_hour_rad about mean_rad_ch_pro for wavenumbers within
  each channel and physical process category that are not saturated(sdev_rad_ch_pro)
• The average of mean_hour_rad computed for the set of wavenumbers within a
  particular channel for a fixed physical process as given in the spectral mapping
  function liste(mean_rad_ch_pro)
• Number of wavenumber elements over which the calculations are performed(nobs_rad_ch)
• The standard deviation of mean_hour_rad about mean_rad_bin_pro for the set of
  wavenumbers within a particular bin for a fixed physical process(sdev_rad_bin_pro)
• Time offset of tweaks from base_time(time_offset)
• The number of spectra over which the hourly calculations are performed(nobs_hour_rad)
• For each channel, this gives the total number of active physical processes out
  of the 12 defined for the process field(NOTE 0-indeterminate is counted)(nactive_pro_ch)
• The standard deviation of mean_hour_rad about mean_rad_pro for the set of
  wavenumbers which are mapped to a particular physical process(sdev_rad_pro)
• The AERI spectral radiances averaged over an hour window centered on the time of
  the LBLRTM rundeck(mean_hour_rad)
• The standard deviation of mean_hour_rad about mean_rad_ch computed over the
  wavenumbers for each of the AERI channels(sdev_rad_ch)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• Maximum height reached by this sonde launch(max_sonde_alt)
• Surface temperature from wavenumber average of spectral radiance at mean
  wavenumber 2295.021 cm-1(wisc_summary_T_ch2)
• Surface temperature from wavenumber average of spectral radiance at mean
  wavenumber 677.417 cm-1(wisc_summary_T_ch1)
• column ozone(ozone)
• wavenumbers for mean radiance spectra(wnum)
• Time offset from base_time(base_time)
• LBLRTM Model radiance spectra(model_rad)
• Surface temperature as reported by sonde(sonde_surface_T)
• Serial number for the sonde used at this time.(sonde_serial_number)
• Time offset of tweaks from base_time(time_offset)
• north latitude for all the input platforms.(lat)
• east longitude for all the input platforms.(lon)
• altitude above sea levelaltunits(alt)
• Sonde launch time minus surface temperature time(surface_time_offset)

• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each channel that are not saturated(integ_abs_resid_ch_unsat)
• Sequential data channel number. See channel_explanation global attribute.(channel)
• Time offset of tweaks from base_time(time_offset)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each channel and physical process category that are not saturated(mean_abs_resid_ch_pro_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each channel that
  are not saturated(mean_resid_ch_unsat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each physical process category that are not saturated(sdev_resid_pro_unsat)
• Mean Temperature from SMOS(SMOS_temp)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each channel that are not saturated(mean_abs_resid_ch_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each bin and
  physical process category that are not saturated(mean_resid_bin_pro_unsat)
• Precipitation Total from SMOS(SMOS_precip)
• Integral of the AERI measured radiances over wavenumbers within each bin and
  physical process category that are not saturated(integ_rad_bin_pro_unsat)
• Number of wavenumbers values over which the integral is calculated(nobs_sat)
• Number of wavenumbers over which the integral is calculated(nobs_pro_all)
• Integral of the radiances over wavenumbers within each channel and physical
  process category where the Planck function is used for saturated wavenumbers and
  AERI me(integ_rad_ch_pro_all)
• Integral of the AERI measured radiances over wavenumbers within each channel
  that are not saturated(integ_rad_ch_unsat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each physical
  process category that are not saturated(integ_resid_pro_unsat)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each physical process category that are not saturated(integ_abs_resid_pro_unsat)
• Difference of brightness temperatures in the ch1 window region, [1142.20,
  1147.03] wavenumbers, which is an indicator of the atmospheric variability(meas_atm_var_T1)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each channel that are not saturated(sdev_resid_ch_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers between 550.1299 and
  3020.1699 that are not saturated(mean_resid_unsat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each bin and
  physical process category that are not saturated(integ_resid_bin_pro_unsat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each bin that are not saturated(sdev_resid_bin_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_ch_unsat)
• Surface temps used in the LBLRTM runs -- Univ of WISC selected bands(model_surfT)
• north latitude for all the input platforms.(lat)
• Standard Deviation of Temperature from SMOS(SMOS_sd_temp)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each bin and physical process category that are not saturated(integ_abs_resid_bin_pro_unsat)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each bin that are not saturated(integ_abs_resid_bin_unsat)
• Integral of the AERI measured radiances over wavenumbers within each physical
  process category that are not saturated(integ_rad_pro_unsat)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers between 550.1299 and 3020.1699 that are not saturated(integ_abs_resid_unsat)
• Standard Deviation of Vapor Pressure from SMOS(SMOS_sd_vap_pres)
• Number of wavenumbers over which the integral is calculated(nobs_bin_all)
• Standard deviation of the average radiances in the 985-990 and 2510-2515
  wavenumber windows during the AERI dwell time(aeri_dwell_atm_var)
• For each channel, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_ch)
• Time offset from base_time(base_time)
• Integral of the radiances over wavenumbers within each bin and physical process
  category where the Planck function is used for saturated wavenumbers and
  AERI measu(integ_rad_bin_pro_all)
• Standard Deviation of Relative Humidity from SMOS(SMOS_sd_rh)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each bin that
  are not saturated(integ_resid_bin_unsat)
• AERI sample time minus SMOS sample time(SMOS_offset_time)
• Retrieved sample time (current sample time) minus sonde launch time(sonde_offset_time)
• Number of wavenumbers values over which the integral is calculated(nobs_ch_sat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each channel and
  physical process category that are not saturated(mean_resid_ch_pro_unsat)
• Logical flag indicating if the AERI sample was used to derive the surface
  temperature value for driving the model(surface_temp_from_aeri_used)
• Standard Deviation of Barometric Pressure from SMOS(SMOS_sd_bar_pres)
• Integral of the AERI measured radiances over wavenumbers within each channel and
  physical process category that are not saturated(integ_rad_ch_pro_unsat)
• For each bin, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_bin)
• Integral of the radiances over wavenumbers within each physical process category
  where the Planck function is used for saturated wavenumbers and AERI
  measured radiance(integ_rad_pro_all)
• For each bin, this gives the total number of active physical processes out of
  the 12 defined for the process field (NOTE 0-indeterminate is counted)(nactive_pro_bin)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each channel and physical process category that are not saturated(integ_abs_resid_ch_pro_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each channel that are saturated(integ_rad_ch_sat)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each bin and physical process category that are not saturated(mean_abs_resid_bin_pro_unsat)
• Integral of the radiances over wavenumbers within each channel where the Planck
  function is used for saturated wavenumbers and AERI measured radiance is
  used otherwise(integ_rad_ch_all)
• Integral of the AERI measured radiances over wavenumbers within each bin that
  are not saturated(integ_rad_bin_unsat)
• Number of wavenumbers values over which the integral is calculated(nobs_bin_pro_sat)
• Number of wavenumbers values over which the integral is calculated(nobs_bin_sat)
• Number of wavenumbers over which the integral is calculated(nobs_ch_all)
• Bin number for wavenumber sub-bands used as a coordinate in the bin dimension(bin)
• Mean Barometeric Pressure from SMOS(SMOS_bar_pres)
• Physical process number used as a coordinate in the process dimension(process)
• Number of wavenumbers values over which the integral is calculated(nobs_pro_sat)
• Average of brightness temperatures calculated from AERI radiances within
  spectral windows, ch1:[1142.20,1147.03] & ch2:[2506.20,2511.02](mean_AERI_BT)
• For each channel, this gives the total number of active physical processes out
  of the 12 defined for the process field(NOTE 0-indeterminate is counted)(nactive_pro_ch)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each bin and physical process category that are not saturated(sdev_resid_bin_pro_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each physical
  process category that are not saturated(mean_resid_pro_unsat)
• Integral of the radiances over wavenumbers between 550.1299 and 3020.1699 where
  the Planck function is used for saturated wavenumbers and AERI measured
  radiance is used ot(integ_rad_all)
• Number of wavenumbers over which the integral is calculated(nobs_ch_pro_all)
• Number of wavenumbers values over which the integral is calculated(nobs_ch_pro_sat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers between 550.1299 and
  3020.1699 that are not saturated(integ_resid_unsat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  and physical process category that are not saturated(integ_resid_ch_pro_unsat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  that are not saturated(integ_resid_ch_unsat)
• Measure of atmospheric variability over 705-798 cm-1 (bin 3)(meas_atm_var_bin3)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each bin that are
  not saturated(mean_resid_bin_unsat)
• east longitude for all the input platforms.(lon)
• Mean Relative Humidity from SMOS(SMOS_rh)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  between 550.1299 and 3020.1699 that are not saturated(mean_abs_resid_unsat)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each physical process category that are not saturated(mean_abs_resid_pro_unsat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers between 550.1299 and 3020.1699 that are not saturated(sdev_resid_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_pro_unsat)
• Number of wavenumbers over which the integral is calculated(nobs_bin_pro_all)
• Number of wavenumbers over which the mean or integral is calculated(nobs_ch_pro_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each bin and physical process category that are saturated(integ_rad_bin_pro_sat)
• Integral of the radiances over wavenumbers within each bin where the Planck
  function is used for saturated wavenumbers and AERI measured radiance is used
  otherwise(integ_rad_bin_all)
• Integral of the AERI measured radiances over wavenumbers between 550.1299 and
  3020.1699 that are not saturated(integ_rad_unsat)
• Indicator of large residuals in channel 1 transparent region(transparent_region_dq_flag)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each bin that are saturated(integ_rad_bin_sat)
• altitude above sea levelaltunits(alt)
• Mean Vapor Pressure from SMOS(SMOS_vap_pres)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each channel and physical process category that are not
  saturated(sdev_resid_ch_pro_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  between 550.1299 and 3020.1699 that are saturated(integ_rad_sat)
• Number of wavenumbers over which the integral is calculated(nobs_all)
• Number of wavenumbers over which the mean or integral is calculated(nobs_bin_pro_unsat)
• First temperature reported by the sonde(sonde_surfT)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each channel and physical process category that are not saturated(integ_rad_ch_pro_sat)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each bin that are not saturated(mean_abs_resid_bin_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_bin_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each physical process category that are saturated(integ_rad_pro_sat)

• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  that are not saturated(integ_resid_ch_unsat)
• Sequential data channel number. See channel_explanation global attribute.(channel)
• Logical flag indicating if the AERI sample was used to derive the surface
  temperature value for driving the model(surface_temp_from_aeri_used)
• Average of brightness temperatures calculated from AERI radiances within
  spectral windows, ch1:[1142.20,1147.03] & ch2:[2506.20,2511.02](mean_AERI_BT)
• Time offset from base_time(base_time)
• altitude above sea levelaltunits(alt)
• wavenumbers for spectral differences(wavenumber)
• Retrieved sample time (current sample time) minus sonde launch time(sonde_offset_time)
• AERI radiance spectra minus LBLRTM radiance spectra(rad_difference)
• north latitude for all the input platforms.(lat)
• Time offset of tweaks from base_time(time_offset)
• Indicator of large residuals in channel 1 transparent region(transparent_region_dq_flag)
• east longitude for all the input platforms.(lon)

• Standard Deviation of Relative Humidity from SMOS(SMOS_sd_rh)
• Number of wavenumbers over which the integral is calculated(nobs_bin_pro_all)
• Standard Deviation of Temperature from SMOS(SMOS_sd_temp)
• Logical flag indicating if the AERI sample was used to derive the surface
  temperature value for driving the model(surface_temp_from_aeri_used)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each physical
  process category that are not saturated(mean_resid_pro_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers between 550.1299 and
  3020.1699 that are not saturated(mean_resid_unsat)
• Integral of the radiances over wavenumbers between 550.1299 and 3020.1699 where
  the Planck function is used for saturated wavenumbers and AERI measured
  radiance is used ot(integ_rad_all)
• The mean of the AERI minus LBLRTM modeled residuals over the set of wavenumbers
  which are mapped to a particular physical process as given in the spectral
  mapping functio(mean_resid_pro)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  that are not saturated(integ_resid_ch_unsat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each physical process category that are not saturated(sdev_resid_pro_unsat)
• Standard deviation of the average radiances in the 985-990 and 2510-2515
  wavenumber windows during the AERI dwell time(aeri_dwell_atm_var)
• Number of wavenumbers over which the mean or integral is calculated(nobs_bin_pro_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_ch_pro_unsat)
• Average of brightness temperatures calculated from AERI radiances within
  spectral windows, ch1:[1142.20,1147.03] & ch2:[2506.20,2511.02](mean_AERI_BT)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  within a particular channel for a fixed physical process(sdev_resid_ch_pro)
• The mean of the AERI minus LBLRTM modeled residuals over the entire wavenumber
  spectrum between 520.2368 and 3020.1699(mean_resid)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each channel and
  physical process category that are not saturated(mean_resid_ch_pro_unsat)
• Integral of the AERI measured radiances over wavenumbers within each channel and
  physical process category that are not saturated(integ_rad_ch_pro_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each physical process category that are saturated(integ_rad_pro_sat)
• Number of wavenumbers over which the integral is calculated(nobs_ch_pro_all)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  within a particular bin for a fixed physical process(sdev_resid_bin_pro)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each bin that are not saturated(integ_abs_resid_bin_unsat)
• Number of residuals over which the mean is calculated(nobs_resid_bin)
• For each bin, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_bin)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each channel that are saturated(integ_rad_ch_sat)
• east longitude for all the input platforms.(lon)
• Mean Relative Humidity from SMOS(SMOS_rh)
• The mean of the AERI minus LBLRTM modeled residuals within a particular channel
  for a fixed physical process as given in the spectral mapping function
  listed in the gl(mean_resid_ch_pro)
• Time offset of tweaks from base_time(time_offset)
• Integral of the AERI measured radiances over wavenumbers within each physical
  process category that are not saturated(integ_rad_pro_unsat)
• AERI sample time minus SMOS sample time(SMOS_offset_time)
• Number of residuals over which the mean is calculated(nobs_resid_bin_pro)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each bin and physical process category that are saturated(integ_rad_bin_pro_sat)
• Indicator of large residuals in channel 1 transparent region(transparent_region_dq_flag)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each bin and physical process category that are not saturated(integ_abs_resid_bin_pro_unsat)
• Sequential data channel number. See channel_explanation global attribute.(channel)
• Number of wavenumbers over which the integral is calculated(nobs_pro_all)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each bin that are not saturated(mean_abs_resid_bin_unsat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each channel that are not saturated(sdev_resid_ch_unsat)
• The mean of the AERI minus LBLRTM modeled residuals over the wavenumbers for
  each of the AERI channels(mean_resid_ch)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers between 550.1299 and 3020.1699 that are not saturated(sdev_resid_unsat)
• Number of wavenumbers values over which the integral is calculated(nobs_sat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each channel
  and physical process category that are not saturated(integ_resid_ch_pro_unsat)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each channel that
  are not saturated(mean_resid_ch_unsat)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each physical process category that are not saturated(mean_abs_resid_pro_unsat)
• Number of wavenumbers over which the integral is calculated(nobs_all)
• Integral of the radiances over wavenumbers within each physical process category
  where the Planck function is used for saturated wavenumbers and AERI
  measured radiance(integ_rad_pro_all)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each bin and
  physical process category that are not saturated(integ_resid_bin_pro_unsat)
• Difference of brightness temperatures in the ch1 window region, [1142.20,
  1147.03] wavenumbers, which is an indicator of the atmospheric variability(meas_atm_var_T1)
• Standard Deviation of Barometric Pressure from SMOS(SMOS_sd_bar_pres)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers between 550.1299 and 3020.1699 that are not saturated(integ_abs_resid_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each channel and physical process category that are not saturated(integ_rad_ch_pro_sat)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  over the wavenumbers for each of the bins (sub-bands)(sdev_resid_bin)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each bin and physical process category that are not saturated(sdev_resid_bin_pro_unsat)
• Number of wavenumbers values over which the integral is calculated(nobs_bin_sat)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each channel that are not saturated(integ_abs_resid_ch_unsat)
• Integral of the AERI minus LBLRTM residuals for wavenumbers between 550.1299 and
  3020.1699 that are not saturated(integ_resid_unsat)
• Bin number for wavenumber sub-bands used as a coordinate in the bin dimension(bin)
• Integral of the radiances over wavenumbers within each bin and physical process
  category where the Planck function is used for saturated wavenumbers and
  AERI measu(integ_rad_bin_pro_all)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each channel that are not saturated(mean_abs_resid_ch_unsat)
• First temperature reported by the sonde(sonde_surfT)
• altitude above sea levelaltunits(alt)
• Integral of the AERI measured radiances over wavenumbers within each bin that
  are not saturated(integ_rad_bin_unsat)
• Number of wavenumbers over which the integral is calculated(nobs_bin_all)
• hatch_open_is_true and hatch_closed_is_false(valid_aeri_data)
• Physical process number used as a coordinate in the process dimension(process)
• For each channel, this gives the total number of active physical processes out
  of the 12 defined for the process field(NOTE 0-indeterminate is counted)(nactive_pro_ch)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each physical
  process category that are not saturated(integ_resid_pro_unsat)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  over the set of wavenumbers which are mapped to a particular physical
  process(sdev_resid_pro)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each bin that are
  not saturated(mean_resid_bin_unsat)
• Integral of the AERI measured radiances over wavenumbers within each channel
  that are not saturated(integ_rad_ch_unsat)
• Number of residuals over which the mean is calculated(nobs_resid_pro)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each physical process category that are not saturated(integ_abs_resid_pro_unsat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_unsat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  between 550.1299 and 3020.1699 that are saturated(integ_rad_sat)
• Number of wavenumbers values over which the integral is calculated(nobs_bin_pro_sat)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each channel and physical process category that are not
  saturated(sdev_resid_ch_pro_unsat)
• Integral of the AERI measured radiances over wavenumbers between 550.1299 and
  3020.1699 that are not saturated(integ_rad_unsat)
• Time offset from base_time(base_time)
• Mean of the AERI minus LBLRTM residuals for wavenumbers within each bin and
  physical process category that are not saturated(mean_resid_bin_pro_unsat)
• Precipitation Total from SMOS(SMOS_precip)
• north latitude for all the input platforms.(lat)
• Integral of the Planck blackbody radiances using model_surfT over wavenumbers
  within each bin that are saturated(integ_rad_bin_sat)
• Number of wavenumbers over which the mean or integral is calculated(nobs_bin_unsat)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  over the wavenumbers for each of the AERI channels(sdev_resid_ch)
• The standard deviation about the mean of the AERI minus LBLRTM modeled residuals
  over the entire wavenumber spectrum between 520.2368 and 3020.1699(sdev_resid)
• Number of residuals over which the mean is calculated(nobs_resid_ch)
• Number of residuals over which the mean is calculated(nobs_resid_ch_pro)
• Number of wavenumbers values over which the integral is calculated(nobs_ch_sat)
• Mean Barometeric Pressure from SMOS(SMOS_bar_pres)
• Measure of atmospheric variability over 705-798 cm-1 (bin 3)(meas_atm_var_bin3)
• Integral of the radiances over wavenumbers within each channel and physical
  process category where the Planck function is used for saturated wavenumbers and
  AERI me(integ_rad_ch_pro_all)
• For each bin, this gives the total number of active physical processes out of
  the 12 defined for the process field (NOTE 0-indeterminate is counted)(nactive_pro_bin)
• Integral of the AERI minus LBLRTM residuals for wavenumbers within each bin that
  are not saturated(integ_resid_bin_unsat)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each channel and physical process category that are not saturated(mean_abs_resid_ch_pro_unsat)
• Number of wavenumbers over which the integral is calculated(nobs_ch_all)
• Standard deviation about the mean of the AERI minus LBLRTM residuals for
  wavenumbers within each bin that are not saturated(sdev_resid_bin_unsat)
• Integral of the radiances over wavenumbers within each bin where the Planck
  function is used for saturated wavenumbers and AERI measured radiance is used
  otherwise(integ_rad_bin_all)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  between 550.1299 and 3020.1699 that are not saturated(mean_abs_resid_unsat)
• Integral of the radiances over wavenumbers within each channel where the Planck
  function is used for saturated wavenumbers and AERI measured radiance is
  used otherwise(integ_rad_ch_all)
• Mean of the absolute value of the AERI minus LBLRTM residuals for wavenumbers
  within each bin and physical process category that are not saturated(mean_abs_resid_bin_pro_unsat)
• Number of wavenumbers values over which the integral is calculated(nobs_ch_pro_sat)
• Integral of the absolute value of the AERI minus LBLRTM residuals for
  wavenumbers within each channel and physical process category that are not saturated(integ_abs_resid_ch_pro_unsat)
• Mean Vapor Pressure from SMOS(SMOS_vap_pres)
• Surface temps used in the LBLRTM runs -- Univ of WISC selected bands(model_surfT)
• Number of wavenumbers values over which the integral is calculated(nobs_pro_sat)
• Mean Temperature from SMOS(SMOS_temp)
• Number of wavenumbers over which the mean or integral is calculated(nobs_ch_unsat)
• For each channel, this gives the process number of all active physical processes
  identified by the spectral mapping(active_pro_ch)
• Standard Deviation of Vapor Pressure from SMOS(SMOS_sd_vap_pres)
• Integral of the AERI measured radiances over wavenumbers within each bin and
  physical process category that are not saturated(integ_rad_bin_pro_unsat)
• Number of residuals over which the mean is calculated(nobs_resid)
• The mean of the AERI minus LBLRTM modeled residuals within a particular bin for
  a fixed physical process as given in the spectral mapping function listed in
  the globa(mean_resid_bin_pro)
• The mean of the AERI minus LBLRTM modeled residuals over the wavenumbers for
  each of the bins (sub-bands)(mean_resid_bin)
• Retrieved sample time (current sample time) minus sonde launch time(sonde_offset_time)
• Number of wavenumbers over which the mean or integral is calculated(nobs_pro_unsat)

• Number of cloudy observations in ensemble(nobs_mpl_cbh)
• altitude above sea levelaltunits(alt)
• Number of clear observations in ensemble(nobs_cloud3_clear)
• Number of foggy observations in ensemble (probably condensation on the window)(nobs_mpl_foggy)
• Standard deviation of vap ensemble(sdev_vap)
• Retrieved sample time (current sample time) minus sonde launch time(sonde_offset_time)
• Average of brightness temperatures calculated from AERI radiances within
  spectral window for channel 2: [2506.20,2511.02](mean_AERI_BT_channel_2)
• Standard deviation of 23tbsky ensemble(sdev_23tbsky_large)
• Standard deviation of 31tbsky ensemble(sdev_31tbsky)
• Standard deviation of mpl_cbh ensemble(sdev_mpl_cbh)
• Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
• Cloud detection flag from sgpaerilblcloudsC1.c1(nonclear_flag)
• Ensemble average of first cloud base height from the Belfort ceilometer(mean_cloud1_cbh)
• Ensemble average of ratios of direct_norm_broadband divided by
  diffuse_hemisp_broadband from the SIROS(mean_dir_by_diff_ratio)
• Number of cloudy observations in ensemble(nobs_cloud1_cbh)
• east longitude for all the input platforms.(lon)
• Time offset of tweaks from base_time(time_offset)
• Number of observations in each MWR ensemble (23tbsky, 31tbsky, vap, liq)(nobs_mwr_ensembles)
• Standard deviation of the average radiance in the 2510-2515 wavenumber window
  during the AERI dwell time(aeri_dwell_atm_var_channel_2)
• Cloud base height from the MPL(mean_mpl_cbh)
• Number of observations in each `large` MWR ensemble (23tbsky and 31tbsky)(nobs_mwr_ensembles_large)
• Standard deviation of the average radiance in the 985-990 wavenumber window
  during the AERI dwell time(aeri_dwell_atm_var_channel_1)
• Number of clear observations in ensemble(nobs_mpl_clear)
• Standard deviation of ratio ensemble about mean_dir_to_diff_ratio(sdev_dir_by_diff_ratio)
• Serial number for the sonde used at this time.(sonde_serial_number)
• Average IR temperature from the IRT (on the MWR)(mean_irt)
• Ensemble average of second cloud base height from the Belfort ceilometer(mean_cloud2_cbh)
• Ensemble average of third cloud base height from the Belfort ceilometer(mean_cloud3_cbh)
• AERI sample time minus WSI image time(wsi_offset_time)
• Ensemble average of 23.8 GHz sky brightness temperature from the MWR(mean_23tbsky)
• Number of cloudy observations in ensemble(nobs_cloud2_cbh)
• Data quality flag for MPL cbh ensemble(mpl_cbh_dq_flag)
• Number of clear observations in ensemble(nobs_cloud2_clear)
• Time offset from base_time(base_time)
• north latitude for all the input platforms.(lat)
• Standard deviation of cloud1 ensemble(sdev_cloud1_cbh)
• Standard deviation of 31tbsky ensemble(sdev_31tbsky_large)
• Number of ratios in ensemble(nobs_dir_by_diff_ratio)
• Cloud base height estimate from the field mean_AERI_BT_channel_1(cbh_AERI_channel_1)
• Calculated cloud cover fraction from the WSI(cloud_cover_fract)
• Standard deviation of the IR temperature ensemble(sdev_irt)
• Ensemble average of total water vapor along LOS path from the MWR(mean_vap)
• Average total liquid water along LOS path from the MWR(mean_liq)
• Standard deviation of 23tbsky ensemble(sdev_23tbsky)
• Cloud base height estimate from the field mean_AERI_BT_channel_2(cbh_AERI_channel_2)
• Standard deviation of liq ensemble(sdev_liq)
• Number of cloudy observations in ensemble(nobs_cloud3_cbh)
• Calculated cloud cover fraction from the WSI(cloud_cover_frac)
• IR temperature calculated from the AERI spectral response function used to
  mimick the output from the IR thermometer on the MWR(calculated_irt)
• Calculated number of clouds in WSI image(num_cloud)
• Average of brightness temperatures calculated from AERI radiances within
  spectral window for channel 1: [1142.20,1147.03](mean_AERI_BT_channel_1)
• Standard deviation of cloud2 ensemble(sdev_cloud2_cbh)
• Standard deviation of cloud3 ensemble(sdev_cloud3_cbh)
• Binary field indicating which inputs are available and used to set the
  nonclear_flag(nonclear_inputs)
• Ensemble average of 31.4 GHz sky brightness temperature from the MWR(mean_31tbsky)
• Number of clear observations in ensemble(nobs_cloud1_clear)

• Time offset from base_time(base_time)
• Maximum height reached by this sonde launch(max_sonde_alt)
• altitude above sea levelaltunits(alt)
• Sonde launch time minus surface temperature time(surface_time_offset)
• east longitude for all the input platforms.(lon)
• column ozone(ozone)
• Surface temperature from wavenumber average of spectral radiance at mean
  wavenumber 677.417 cm-1(wisc_summary_T_ch1)
• Serial number for the sonde used at this time.(sonde_serial_number)
• wavenumbers for mean radiance spectra(wnum)
• Surface temperature from wavenumber average of spectral radiance at mean
  wavenumber 2295.021 cm-1(wisc_summary_T_ch2)
• Surface temperature as reported by sonde(sonde_surface_T)
• north latitude for all the input platforms.(lat)
• Time offset of tweaks from base_time(time_offset)
• LBLRTM Model radiance spectra(model_rad)

• Interpolated dewpoint temperature(dewpointTemperature)
• Cloud-base height, from Micropulse LIDAR or Belfort LIDAR ceilometer(cloudBaseHeight)
• CPL retrieval of absolute temperature(CPL_ambientTemp)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• Auxiliary inputs used for this retrieval(auxDataFlagsNow)
• profile source flag(profile_source_flag)
• CPL height array for the profile(CPL_height)
• altitude above sea levelaltunits(alt)
• Total precipitable water vapor, from Microwave Radiometer(totalPrecipitalWater)
• Auxiliary inputs used today(auxDataFlagsToday)
• Retrieval rejection flag(retrievalRejectionFlag)
• Height of bins above ground level for the temperature, retrieved water vapor,
  and pressure profile(height)
• east longitude for all the input platforms.(lon)
• north latitude for all the input platforms.(lat)
• CPL retrieval of atmospheric pressure(CPL_pressure)
• Surface air temperature for last 5 minutes of previous hour(temperature)
• Time offset from base_time(base_time)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Constant Pressure Level (Wisc original pres_level)(CPL)
• CPL retrieval of dewpoint temperature(CPL_dewpointTemp)
• CPL retrieval of water vapor mixing ratio(CPL_waterVaporMixingRatio)
• Time offset of tweaks from base_time(time_offset)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)

SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes

Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS 
windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 
2006.  The radiosonde type used for the each sounding may be determined by looking the 
metadata variable "launch_status" in the netCDF data files.

• east longitude for all the input platforms.(lon)
• model zonal wind velocity(u_wind)
• surface wind speed(wspd)
• model meridional wind velocity(v_wind)
• north latitude for all the input platforms.(lat)
• Wind Direction(deg)
• Wind Status(wstat)

SGP/SONDE/C1 - Soundings done as part of dual-sonde flights

The following soundings done during the subject time period were flown in dual-sonde mode 
in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA 
ATR (atmospheric temperature reference) radiosonde.  The radiosondes were separated by a 6' 
styrofoam bar.  To accommodate the additional weight, we used 1200g balloons rather than 
350g balloons.  Accordingly, we want to alert users that these soundings may reach 
higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat 
higher.  The following soundings are affected:

Sequence  Date    UTC launch time
    1     2/22        0530
    2     2/22        1730
    3     2/22        2330 <---- No data: launch failure    
    4     2/23        0230
    5     2/23        0530
    6     2/23        1730    
    7     2/23        2030
    8     2/23        2330
    9     2/24        2330
   10     2/25        0215
   11     2/25        0509    
   12     2/25        1730
   13     2/25        1930
   14     2/25        2300

• Surface dew point temperature(dp)
• Time offset from base_time(base_time)
• surface wind speed(wspd)
• model zonal wind velocity(u_wind)
• Relative humidity scaled, by total column amount from MWR(rh)
• north latitude for all the input platforms.(lat)
• Ascent Rate(asc)
• pressure at constant pressure surface(pres)
• Wind Direction(deg)
• Wind Status(wstat)
• east longitude for all the input platforms.(lon)
• Dry-Bulb Temperature(tdry)
• Time offset of tweaks from base_time(time_offset)
• model meridional wind velocity(v_wind)
• altitude above sea levelaltunits(alt)

SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files

The wind finding hardware failed so that no wind or latitude/longitude data was collected 
on the launches for these days.

• east longitude for all the input platforms.(lon)
• model zonal wind velocity(u_wind)
• surface wind speed(wspd)
• model meridional wind velocity(v_wind)
• north latitude for all the input platforms.(lat)
• Wind Status(wstat)

SGP/AERI/E14 - Missing data

Data are missing and unrecoverable.

• Ambient temperature used in calibration(calibrationAmbientTemp)
• Character string containing instrument name(instrumentUnitNumber)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Time at center of AERI sky observation period(timeHHMMSS)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• wavenumbers for mean radiance spectra(wnum)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• AERI instrument data channel number(channelNumber)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Observation date(dateYYMMDD)
• Time offset of tweaks from base_time(time_offset)
• altitude above sea levelaltunits(alt)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Duration of scene view(sceneViewDuration)
• Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
• north latitude for all the input platforms.(lat)
• Time offset from base_time(base_time)
• Time at center of AERI sky observation period(Time_UTC_hours)
• east longitude for all the input platforms.(lon)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Version number of Operational Software(systemReleaseNumber)
• Observation longitude(Longitude)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Observation latitude(Latitude)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
• Julian Day including day and fraction of day(JulianDay)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• AERI instrument unit serial number(AERIunitNumber)
• Observation Altitude(Altitude)

• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Julian Day including day and fraction of day(JulianDay)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Character string containing instrument name(instrumentUnitNumber)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Version number of Operational Software(systemReleaseNumber)
• wavenumbers for mean radiance spectra(wnum)
• Duration of scene view(sceneViewDuration)
• east longitude for all the input platforms.(lon)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Time offset from base_time(base_time)
• Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
• Observation latitude(Latitude)
• AERI instrument data channel number(channelNumber)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• north latitude for all the input platforms.(lat)
• Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Observation longitude(Longitude)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• Time offset of tweaks from base_time(time_offset)
• Observation Altitude(Altitude)
• altitude above sea levelaltunits(alt)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• AERI instrument unit serial number(AERIunitNumber)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Observation date(dateYYMMDD)
• Time at center of AERI sky observation period(timeHHMMSS)
• Ambient air temperature at hatch opening(outsideAirTemp)

• wavenumbers for standard deviation of radiance spectra(wnum2)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Time offset from base_time(base_time)
• Time offset of tweaks from base_time(time_offset)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• AERI instrument unit serial number(AERIunitNumber)
• Observation Altitude(Altitude)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
• altitude above sea levelaltunits(alt)
• Observation date(dateYYMMDD)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Julian Day including day and fraction of day(JulianDay)
• east longitude for all the input platforms.(lon)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Character string containing instrument name(instrumentUnitNumber)
• Duration of scene view(sceneViewDuration)
• north latitude for all the input platforms.(lat)
• wavenumbers for mean radiance spectra(wnum)
• Observation longitude(Longitude)
• Observation latitude(Latitude)
• Version number of Operational Software(systemReleaseNumber)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
• Time at center of AERI sky observation period(timeHHMMSS)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• AERI instrument data channel number(channelNumber)

• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Observation Altitude(Altitude)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm^-1)(elevatedLayerAirTemp700_705)
• Averaged Wave number in inverse centimeters(wnumsum2)
• Character string containing instrument name(instrumentUnitNumber)
• Averaged Wave number in inverse centimeters(wnumsum7)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
• Averaged Wave number in inverse centimeters(wnumsum8)
• Averaged Wave number in inverse centimeters(wnumsum10)
• Averaged Wave number in inverse centimeters(wnumsum3)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm^-1)(surfaceLayerAirTemp2295_2300)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Observation date(dateYYMMDD)
• Averaged Wave number in inverse centimeters(wnumsum11)
• Averaged Wave number in inverse centimeters(wnumsum9)
• Logical flag indicating whether any data is available at current time
  (true/false)(dataAvailable)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• Averaged Wave number in inverse centimeters(wnumsum4)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Averaged Wave number in inverse centimeters(wnumsum1)
• Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
• Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
• altitude above sea levelaltunits(alt)
• Time offset of tweaks from base_time(time_offset)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Julian Day including day and fraction of day(JulianDay)
• Time at center of AERI sky observation period(Time_UTC_hours)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm^-1(LWskyNEN)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Time offset from base_time(base_time)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• AERI instrument data channel number(channelNumber)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Averaged Wave number in inverse centimeters(wnumsum14)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• east longitude for all the input platforms.(lon)
• Averaged Wave number in inverse centimeters(wnumsum12)
• Version number of Operational Software(systemReleaseNumber)
• Averaged Wave number in inverse centimeters(wnumsum13)
• AERI instrument unit serial number(AERIunitNumber)
• Observation latitude(Latitude)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm^-1)(elevatedLayerAirTemp2282_2287)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(SWskyNEN)
• Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Duration of scene view(sceneViewDuration)
• Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Observation longitude(Longitude)
• Time at center of AERI sky observation period(timeHHMMSS)
• Averaged Wave number in inverse centimeters(wnumsum6)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Longwave surface air brightness temperature from radiance average (675_680
  cm^-1)(surfaceLayerAirTemp675_680)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Averaged Wave number in inverse centimeters(wnumsum5)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
• north latitude for all the input platforms.(lat)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)

• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Radiance standard deviation during ambient blackbody view averaged over (700_705
  cm-1)(ABBviewStdDevRadiance700_705)
• Radiance standard deviation during hot blackbody view averaged over (985_990
  cm-1)(HBBviewStdDevRadiance985_990)
• Observation longitude(Longitude)
• north latitude for all the input platforms.(lat)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Detector temperature sensed via diode near detector(detectorTemp)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Duration of scene view(sceneViewDuration)
• altitude above sea levelaltunits(alt)
• AERI instrument data channel number(channelNumber)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Observation Altitude(Altitude)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Stirling cycle cooler current(coolerCurrent)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Coadditions count Number of complete(forward+backward) interferogram scans in a
  sample average.(coadditionsCount)
• Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Time at center of AERI sky observation period(timeHHMMSS)
• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Ambient blackbody temperature(ABBbottomTemp)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Longwave surface air brightness temperature from radiance average (675_680
  cm^-1)(surfaceLayerAirTemp675_680)
• Hot blackbody temperature - rim top(HBBtopTemp)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
• Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
• Julian Day including day and fraction of day(JulianDay)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
• Character string containing instrument name(instrumentUnitNumber)
• Radiance standard deviation during ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm^-1(LWskyNEN)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Radiance standard deviation during hot blackbody view averaged over (2295_2300
  cm-1)(HBBviewStdDevRadiance2295_2300)
• Observation latitude(Latitude)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• Spare temperature sensor (location TBD)(spareTemp)
• Signal conditioning electronics inside air temperature(SCEtemp)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
• Number of terms used in finite field of view correction(numberOfTerms)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
• Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm^-1)(surfaceLayerAirTemp2295_2300)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Scene mirror motor case temperature(mirrorMotorTemp)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Radiance standard deviation during hot blackbody view averaged over (700_705
  cm-1)(HBBviewStdDevRadiance700_705)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Radiance standard deviation during ambient blackbody view averaged over
  (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• AERI ingest computer temperature measured at back panel of computer(computerTemp)
• Hot blackbody temperature - apex(HBBapexTemp)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
• AERI instrument unit serial number(AERIunitNumber)
• Blackbody cavity geometry factor(BBcavityFactor)
• Logical flag indicating whether any data is available at current time
  (true/false)(dataAvailable)
• Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Interferometer front end fan airflow unheated temperature: used with heated
  temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm^-1)(elevatedLayerAirTemp2282_2287)
• Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
• Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
• Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• Interferometer window temperature measured on the outside of the aluminum window
  flange(interferometerWindowTemp)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Version number of Operational Software(systemReleaseNumber)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(SWskyNEN)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
• Observation date(dateYYMMDD)
• Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
• Time offset from base_time(base_time)
• Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm^-1)(elevatedLayerAirTemp700_705)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Time offset of tweaks from base_time(time_offset)
• Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• east longitude for all the input platforms.(lon)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• Radiance standard deviation during hot blackbody view averaged over (675_680
  cm-1)(HBBviewStdDevRadiance675_680)
• Radiance standard deviation during ambient blackbody view averaged over (675_680
  cm-1)(ABBviewStdDevRadiance675_680)
• Radiance standard deviation during hot blackbody view averaged over (2282_2287
  cm-1)(HBBviewStdDevRadiance2282_2287)
• Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
• Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)

• Observation Altitude(Altitude)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Time offset from base_time(base_time)
• Observation longitude(Longitude)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
• Duration of scene view(sceneViewDuration)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Observation latitude(Latitude)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• AERI instrument unit serial number(AERIunitNumber)
• AERI instrument data channel number(channelNumber)
• Observation date(dateYYMMDD)
• altitude above sea levelaltunits(alt)
• Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
  -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• north latitude for all the input platforms.(lat)
• Version number of Operational Software(systemReleaseNumber)
• Character string containing instrument name(instrumentUnitNumber)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• Julian Day including day and fraction of day(JulianDay)
• Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
  only.(atmosphericRelativeHumidity)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
• Time at center of AERI sky observation period(timeHHMMSS)
• Time offset of tweaks from base_time(time_offset)
• wavenumbers for mean radiance spectra(wnum)
• east longitude for all the input platforms.(lon)

SGP/SONDE/C1 - RH values offset due to error in ground check

Background: After installation of the latest software update , we began performing formal 
ground checks on RS92 radiosondes.  By comparing the
radiosonde readings with reference values in a controlled environment, the
ground check is intended to ensure that the radiosonde sensors are in
calibration before launch.  The radisonde values during the ground check
process are recorded automatically; the reference values are entered by the
operator.  If the radiosonde readings vary from the reference values, the
system 'corrects' the radiosonde values.  In the case of RH, the correction
is applied as an offset (true RH = indicated RH + correction).

Problem: Some operators misunderstood the ground-check procedure and entered the 
radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done 
during this period have RH values that are different from what they would be if the 
ground check procedure had been done correctly.

Consequence:  Because the RH corrections generally are small (averaging
about 0.5% RH) and the precision of the reported RH data during this time
period is 1% RH, some values will not be affected at all; others will be off by about 1% 
RH (still within the stated accuracy of the sensor). 
Furthermore, because entering the radiosonde value as the reference value
results in a near zero 'correction,' one may view these soundings as being
done without the ground check correction.  Also note that the dew point
value will be suspect as well.

I am attaching below a listing of the soundings that were affected during the indicated 
time period.  Users can see the magnitude of the problem and choose whether or not to apply 
an offset in RH.  Note that application of the offset to the processed RH data (in the 
netCDF file) will not have the same effect of applying the correction to the absolutely 
raw data (before processing), but the differences should be insignificant.  Also note that 
the corrections for each sounding are included in the netCDF header information.  These 
attributes are named 'humidity_correction' and 'humidity_correction_2'.  The values of RH 
indicated by the radiosonde while it is in the ground check set are in attributes 
'humidity_gc_sonde' and 'humidity_gc_sonde_2.'  There is an RH reading for each of the two RH 
sensors used in the RS92 radiosonde.

Here is the list - RH1 and RH2 are the radiosonde readings in the ground
check set.  Ref is the reference value entered by the operator.  The
correcte reference value should be 0%.  To obtain an approximation to the RH value that 
would have been recorded if the ground check had been done
properly, subtract the Ref value from the indicated RH.

 YYYYMMDD  HHMM  SerialN      RH1     RH2     Ref
 20060827  2332  B2624322    1.00    1.00    1.00
 20060828  1731  B2634078    1.00    1.00    1.00
 20060828  2332  B2624380    3.00    3.00    2.00
 20060909  2331  B2615266    1.00    1.00    1.00
 20060915  1759  B2914012    1.00    1.00    1.00
 20060919  2350  B2825128    1.00    1.00    1.00
 20060920  1800  B2825088    1.00    1.00    1.00
 20060920  2346  B2815633    1.00    1.00    1.00
 20060921  1728  B2834732    1.30    1.30    1.30
 20060921  2330  B2825042    1.50    1.50    1.50
 20060922  0527  B2825043    1.70    1.80    1.70
 20060922  1128  B2825031    1.60    1.50    1.60
 20060922  1729  B2834437    1.50    1.50    1.50
 20060922  2330  B2825040    0.40    0.50    0.50
 20060923  0529  B2834733    0.30    0.30    0.30
 20060923  1128  B2825026    0.40    0.40    0.40
 20060923  1729  B2825064    0.60    0.70    0.60
 20060923  2330  B2825041    0.40    0.50    0.50
 20060924  0529  B2825039    0.30    0.30    0.30
 20060924  1729  B2825025    0.20    0.30    0.20
 20060924  2329  B2825032    0.30    0.40    0.40
 20060925  0529  B2824234    0.20    0.30    0.20

• Surface dew point temperature(dp)
• Relative humidity scaled, by total column amount from MWR(rh)

SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry

The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.

• Surface dew point temperature(dp)
• Dry-Bulb Temperature(tdry)
• Relative humidity scaled, by total column amount from MWR(rh)
• pressure at constant pressure surface(pres)
• altitude above sea levelaltunits(alt)

SGP/SONDE/C1 - RH Sensor failure

The differences between the two RH sensors on this sonde are unreasonably high (~20%).  As 
a result the reported RH values oscillate by this amount during the times the sensors 
are alternately heated.  After the heating stops, the reported RH comes from the sensor 
reading the higher value.  There is no way of knowing if this is the correct value.

• Surface dew point temperature(dp)
• Relative humidity scaled, by total column amount from MWR(rh)

SGP/SONDE/C1 - Reprocess: Incorrect surface temperature and RH

Because of a system problem these two soundings (20070703:1729 and 20070703:2331) have 
incorrect surface values for temperature and RH.

Sounding  BadTemp   BadRH    GoodTemp   GoodRH
17:29      22.60    22.61      27.61     66.97
23:31      22.59     0.00      29.17     64.31

The system has been fixed.

• Surface dew point temperature(dp)
• Dry-Bulb Temperature(tdry)
• Relative humidity scaled, by total column amount from MWR(rh)

SGP/SONDE/C1 - Reprocess: Bad surface RH

It appears that there was some sort of problem with the RH sensor heating cycle regulator 
on this radiosonde.  The surface RH value (66.6% RH) is incorrect and should be 78.7% RH. 
 When I looked at the raw data to try to understand the problem, I noted that the RH 
value in the non-heated sensor did not fully recover to ambient before the next sensor 
heating began.  The problem seemed to go away after launch, but it is hard to be 100% sure.

• Surface dew point temperature(dp)
• Relative humidity scaled, by total column amount from MWR(rh)