NSA/METTWR/C1 - Met Tower Data Incorrect During Calibrations/Changeouts

Met Tower Data was incorrect during this period while sensor changeouts and calibrations 
were accomplished.

• Minimum Dew Point Temperature(dew_pt_temp_min)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Dew point temperature out of range error(dew_pt_temp_out_of_range_error)
• Maximum Wind Direction(wind_dir_max)
• Relative humidity minimum(relh_min)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Maximum Wind Speed(wind_spd_max)
• Std Dev of Wind Speed(wind_spd_sd)
• Temperature standard deviation(temp_sd)
• Relative humidity mean(relh_mean)
• Max Temperature at lowest Model Level- 1 hr(temp_max)
• Wind direction standard deviation(wind_dir_sd)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Mean Air Temperature or Hardware Error(temp_mean)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Air Temperature Hardware Error(temp_hardware_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Minimum Wind Speed(wind_spd_min)
• Minimum Wind Direction(wind_dir_min)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Minimum Vapor Pressure(vap_pres_min)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Relative humidity maximum(relh_max)
• Maximum Vapor Pressure(vap_pres_max)
• Relative humidity out of range error(relh_out_of_range_error)
• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Min Temperature at lowest Model Level- 1 hr(temp_min)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)

• Relative humidity out of range error(relh_out_of_range_error)
• Relative humidity mean(relh_mean)
• Air Temperature Hardware Error(temp_hardware_error)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Air Temperature out of range error(temp_out_of_range_error)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Minimum Wind Direction(wind_dir_min)
• Wind Direction out of range error(wind_dir_out_of_range_error)
• Wind direction standard deviation(wind_dir_sd)
• Maximum Wind Direction(wind_dir_max)
• Maximum Wind Speed(wind_spd_max)
• Relative humidity maximum(relh_max)
• Minimum Vapor Pressure(vap_pres_min)
• Temperature standard deviation(temp_sd)
• Min Temperature at lowest Model Level- 1 hr(temp_min)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Mean Air Temperature or Hardware Error(temp_mean)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Max Temperature at lowest Model Level- 1 hr(temp_max)
• Minimum Wind Speed(wind_spd_min)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Std Dev of Wind Speed(wind_spd_sd)
• Mean Wind Speed(wind_spd_mean)
• Dew point temperature out of range error(dew_pt_temp_out_of_range_error)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Relative humidity minimum(relh_min)
• Maximum Vapor Pressure(vap_pres_max)

NSA/METTWR/C1 - C1 SPURIOUS INFORMATION IN DATA HEADER

There is an attribute for read_timeout_count that should not be included.  
The affected prtion of the header is: read_timeout_count:details = '0 = no error, 1 = 
error'  
User should disregard this attribute information in the header.

• Number of timeouts reading the met tower data by height(read_timeout_count)

NSA/METTWR/C1 - C1 WIND SPEED DATA QUESTIONABLE

The anemometers located at all 4 levels (2m, 10m, 20m, and 40m) are heated anemometers.  
The thermistors controlling the amount of power applied to the cups of the anemometers 
failed.  This caused too much power to be sent to the heating elements.  The cups bubbled 
and, in some cases, completely melted through.

• Std Dev of Wind Speed(wind_spd_sd)
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Speed(wind_spd_min)
• Maximum Wind Speed(wind_spd_max)
• Vector-averaged Wind Speed(wind_spd_vec_avg)

• Mean Wind Speed(wind_spd_mean)
• Maximum Wind Speed(wind_spd_max)
• Std Dev of Wind Speed(wind_spd_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Minimum Wind Speed(wind_spd_min)
• Wind Speed out of range error(wind_spd_out_of_range_error)

NSA/METTWR/C1 - C1 WIND DIRECTION DATA SUSPECT

The wind direction sensor at the 10m level and 20m level became frozen.  The senor at the 
10m level became frozen on July 25 2001.  The date that the 20m level became frozen is 
unknown but occurred after the 10m level became frozen.  Both sensors froze in such a way 
as to consistently report wind direction values out of the south.

• Wind Speed out of range error(win_spd_out_of_range_error)
• Wind direction standard deviation(wind_dir_sd)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Minimum Wind Direction(wind_dir_min)
• Maximum Wind Direction(wind_dir_max)

• Wind Direction out of range error(wind_dir_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Wind Direction(wind_dir_max)
• Wind direction standard deviation(wind_dir_sd)
• Minimum Wind Direction(wind_dir_min)