NSA/METTOWER - Questionable NSA Met-tower wind data

The data analysis software for the NSA Met-tower system was upgraded at 2200 GMT
on 8 SEP 1999.  The upgrade included insertion of  -99.99's for the wind vectors 
when the wind speed or direction were either missing or equal to 0.  This 
resulted in incorrect vector averaged wind speed, wind direction, and 
standard deviation of wind direction.  When this occurred, the 
vector-averaged wind speed and standard deviation of wind direction 
were often abnormally high and the vector-averaged wind direction
 was often approximately 225 deg.  Starting at 2300 GMT on 25 OCT 99
missing wind data were replaced by the previous 1-min average and 
starting at 2200 GMT on 15 NOV 1999 the computed wind vectors were 
used whenever wind speeds or wind directions were 0.

• lat
• win_dir_out_of_range_error
• atmos_pressure
• temp_mean
• filename
• alt
• temp_out_of_range_error
• temp_sd
• win_spd_out_of_range_error
• dew_pt_temp_sd
• vap_pres_min
• dew_pt_temp_mean
• atmos_pressure_PTB_serial_error
• dew_pt_temp_out_of_range_error
• dew_pt_temp_min
• wind_spd_max
• relh_min
• wind_spd_sd
• vap_pres_out_of_range_error
• read_timeout_count
• vap_pres_max
• base_time
• internal_temp_out_of_range_error
• relh_out_of_range_error
• atmos_pressure_out_of_range_error
• relh_mean
• temp_min
• wind_dir_max
• vap_pres_mean
• wind_spd_vec_avg
• atmos_pressure_read_timeout_error
• relh_max
• dew_pt_hardware_error
• internal_voltage_out_of_range_error
• wind_dir_sd
• vap_pres_sd
• wind_dir_vec_avg
• lon
• relh_sd
• wind_spd_min
• wind_spd_mean
• temp_hardware_error
• time_offset
• dew_pt_temp_max
• wind_dir_min
• temp_max

• Raw data stream - documentation not supported