NSA/NIMFR/C2 - Missing data

Data are missing and unrecoverable.

• Time offset from base_time(base_time)
• altitude above sea levelaltunits(alt)
• Data Logger Supply Voltage(logger_volt)
• east longitude for all the input platforms.(lon)
• north latitude for all the input platforms.(lat)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Time offset of tweaks from base_time(time_offset)
• Source of raw data values for time step(raw_file)
• Detector Temperature(mfr_temp)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Data Logger Supply Voltage(logger_volt)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Source of raw data values for time step(raw_file)
• east longitude for all the input platforms.(lon)
• Detector Temperature(mfr_temp)
• Time offset of tweaks from base_time(time_offset)
• Time offset from base_time(base_time)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• north latitude for all the input platforms.(lat)
• altitude above sea levelaltunits(alt)

NSA/NIMFR/C2 - Detector temperature unstable

The detector temp goes to zero due to strain on the cable. This should not affect the 
quality of the scientific data.

• Detector Temperature(mfr_temp)

• Detector Temperature(mfr_temp)

NSA/NIMFR/C2 - Alignment Problem

Problems with alignment.  Since this is a narrow field of view, direct sun instrument, 
misalignments irrecoverably corrupt the data.

• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)

NSA/NIMFR/C2 - Tracker Misalignment

The tracker was not sufficiently well aligned to obtain good normal incidence solar data 
during this period.

• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)

NSA/NIMFR/C2 - Unstable detector temperature

Unstable detector temperature, this will affect the calibration of the instrument. 
Scientific data is suspect, but it is unclear how large of an error this would introduce.

• Detector Temperature(mfr_temp)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Detector Temperature(mfr_temp)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)

NSA/NIMFR/C2 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.

• Time offset from base_time(base_time)
• altitude above sea levelaltunits(alt)
• east longitude for all the input platforms.(lon)
• Detector Temperature(mfr_temp)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Data Logger Supply Voltage(logger_volt)
• north latitude for all the input platforms.(lat)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Time offset of tweaks from base_time(time_offset)
• Source of raw data values for time step(raw_file)

• Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
• Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• Detector Temperature(mfr_temp)
• east longitude for all the input platforms.(lon)
• Time offset of tweaks from base_time(time_offset)
• Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
• Data Logger Supply Voltage(logger_volt)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Source of raw data values for time step(raw_file)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
• NIMFR Tube Temperature(tube_temp)
• Time offset from base_time(base_time)
• Detector Temperature(head_temp)
• north latitude for all the input platforms.(lat)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• altitude above sea levelaltunits(alt)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)

NSA/NIMFR/C2 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.

• Rayleigh optical thickness computed for filter 3(Rayleigh_optical_thickness_filter3)
• Rayleigh optical thickness computed for filter 4(Rayleigh_optical_thickness_filter4)
• Rayleigh optical thickness computed for filter 5(Rayleigh_optical_thickness_filter5)
• Ozone absorption coefficient used for filter 3(Ozone_absorption_coefficient_filter3)
• Rayleigh optical thickness computed for filter 2(Rayleigh_optical_thickness_filter2)
• total optical depth direct narrowband filter 5(total_optical_depth_filter5)
• Ozone absorption coefficient used for filter 2(Ozone_absorption_coefficient_filter2)
• surface pressure(surface_pressure)
• altitude above sea levelaltunits(alt)
• Rayleigh optical thickness computed for filter 1(Rayleigh_optical_thickness_filter1)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter1)
• aerosol optical depth filter 3(aerosol_optical_depth_filter3)
• aerosol optical depth filter 5(aerosol_optical_depth_filter5)
• aerosol optical depth filter 4(aerosol_optical_depth_filter4)
• totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
• total optical depth direct narrowband filter 1(total_optical_depth_filter1)
• total optical depth direct narrowband filter 4(total_optical_depth_filter4)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter4)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter3)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter2)
• total optical depth direct narrowband filter 3(total_optical_depth_filter3)
• north latitude for all the input platforms.(lat)
• Time offset of tweaks from base_time(time_offset)
• east longitude for all the input platforms.(lon)
• Time offset from base_time(base_time)
• Airmasses(airmass)
• aerosol optical depth filter 2(aerosol_optical_depth_filter2)
• Indicator of optical depth stability(optical_depth_stability_flag)
• aerosol optical depth filter 1(aerosol_optical_depth_filter1)
• Ozone absorption coefficient used for filter 1(Ozone_absorption_coefficient_filter1)
• angstrom exponent(angstrom_exponent)
• Optical depth from TOMS satellite(TOMS_optical_depth)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter5)
• Ozone absorption coefficient used for filter 4(Ozone_absorption_coefficient_filter4)
• Ozone absorption coefficient used for filter 5(Ozone_absorption_coefficient_filter5)

• Time offset of tweaks from base_time(time_offset)
• rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)
• log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
• rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
• log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
• rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
• log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
• Airmasses(barnard_airmass)
• rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
• east longitude for all the input platforms.(lon)
• log(irradiance) for the Direct Narrowband Filter6(michalsky_lnI_filter6)
• rejected points for the final fit for the Direct Narrowband Filter5(michalsky_rejected_filter5)
• altitude above sea levelaltunits(alt)
• rejected points for the final fit for the Direct Narrowband Filter6(michalsky_rejected_filter6)
• rejected points for the final fit for the Direct Narrowband Filter3(barnard_rejected_filter3)
• log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
• log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
• rejected points for the final fit for the Direct Narrowband Filter4(barnard_rejected_filter4)
• log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter5(michalsky_lnI_filter5)
• rejected points for the final fit for the Direct Narrowband Filter5(barnard_rejected_filter5)
• log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)
• rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
• rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
• log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
• rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
• north latitude for all the input platforms.(lat)
• Time offset from base_time(base_time)
• Airmasses(michalsky_airmass)
• rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
• log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)

• solar constant for the Direct Narrowband Filter5(michalsky_solar_constant_filter5)
• optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
• solar constant corrected for solar distance for the Direct Broadband(michalsky_solar_constant_sdist_broadband)
• rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
• rejection flag for Direct Broadband(michalsky_badflag_broadband)
• Angstrom exponent(barnard_angstrom_exponent)
• east longitude for all the input platforms.(lon)
• rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
• solar constant for the Direct BroadBand(michalsky_solar_constant_broadband)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(michalsky_solar_constant_sdist_filter3)
• altitude above sea levelaltunits(alt)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(michalsky_solar_constant_sdist_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter1(barnard_error_slope_filter1)
• solar constant for the Direct Narrowband Filter6(michalsky_solar_constant_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(michalsky_solar_constant_sdist_filter2)
• solar constant corrected for solar distance for the Direct Narrowband Filter4(michalsky_solar_constant_sdist_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(michalsky_solar_constant_sdist_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
• rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
• rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
• solar constant for the Direct Narrowband Filter2(michalsky_solar_constant_filter2)
• solar constant for the Direct Narrowband Filter3(michalsky_solar_constant_filter3)
• rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
• error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(michalsky_solar_constant_sdist_filter6)
• rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
• solar constant for the Direct Narrowband Filter4(michalsky_solar_constant_filter4)
• rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
• rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
• rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
• rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
• standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
• optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
• error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(barnard_solar_constant_sdist_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter2(barnard_error_slope_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
• optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(michalsky_good_fraction_filter6)
• error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter4(barnard_solar_constant_sdist_filter4)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter3(barnard_error_slope_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(michalsky_good_fraction_filter3)
• rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
• Time offset of tweaks from base_time(time_offset)
• optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
• optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
• standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
• percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
• error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter6(barnard_error_slope_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(barnard_solar_constant_sdist_filter2)
• rejection flag for Direct Broadband(barnard_badflag_broadband)
• optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
• optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(barnard_solar_constant_sdist_filter3)
• optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(michalsky_good_fraction_filter5)
• optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
• standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(barnard_good_fraction_filter4)
• standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
• standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
• error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
• number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
• optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
• percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(barnard_solar_constant_sdist_filter6)
• standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(barnard_good_fraction_filter1)
• rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
• optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
• standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
• error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
• optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
• optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
• error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
• number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
• error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
• Time offset from base_time(base_time)
• number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(barnard_good_fraction_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
• solar constant for the Direct Narrowband Filter1(michalsky_solar_constant_filter1)
• north latitude for all the input platforms.(lat)
• number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(barnard_good_fraction_filter3)
• Angstrom exponent(michalsky_angstrom_exponent)
• solar constant corrected for solar distance for the Direct BroadBand(barnard_solar_constant_sdist_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(barnard_good_fraction_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(michalsky_good_fraction_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(barnard_solar_constant_sdist_filter1)
• optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(michalsky_good_fraction_filter4)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter5(barnard_error_slope_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(barnard_good_fraction_filter6)
• number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter4(barnard_error_slope_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(michalsky_good_fraction_filter2)

• Detector Temperature(mfr_temp)
• Time offset from base_time(base_time)
• Data Logger Supply Voltage(logger_volt)
• east longitude for all the input platforms.(lon)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Source of raw data values for time step(raw_file)
• north latitude for all the input platforms.(lat)
• Time offset of tweaks from base_time(time_offset)
• altitude above sea levelaltunits(alt)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• NIMFR Tube Temperature(tube_temp)
• Time offset from base_time(base_time)
• north latitude for all the input platforms.(lat)
• east longitude for all the input platforms.(lon)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Detector Temperature(head_temp)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
• altitude above sea levelaltunits(alt)
• Detector Temperature(mfr_temp)
• Time offset of tweaks from base_time(time_offset)
• Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
• Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Data Logger Supply Voltage(logger_volt)
• Source of raw data values for time step(raw_file)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)

NSA/NIMFR/C2 - 940nm channel dead

The 940nm channel has been flat-lined since re-installation in March.  We will attempt to 
fix when the instrument is removed in the fall for winter recalibration.

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)