SIROS data corrupted when tower was down

DQR No:                               Platform: sgpsiros13

Subject: SIROS data corrupted when tower was down

Date Submitted:  12/27/94
Submitted By:    Marvin L. Wesely     ___  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      _x_  Other _Instrment Team leader_
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
	What level data: (raw,a0,a1,b1,c1 etc):
	all data levels for sgpsiros13

    What location was the data collected at: SIROS CF
 
    Period of time in question
 	Begin Date  18/AUG/94  Time   15:30  (GMT)
 	End Date    18/AUG/94  Time   16:30  (GMT)

 Data should be labeled:
 _x_  questionable                      _x_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The 10-m tower at the central facility central cluster was lowered
by site operations personnel and work was carried out on the SIROS
cabling and possibly the MFRSR-supplied data logger.  Some data 
might be missing, some might be out of range, and some might appear 
reasonable but should not be trusted for the time interval and 
location specified.

Other observations/measurements impacted by this problem:

SMOS sensors when tower was down between 1420 and 1520 GMT; see 
  DQR P940822.1
MFR10 sensor when tower was down between 1420 and 1520 GMT, as noted in
  a separate DQR

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flat data with this comment.

Data Processing Notes                Date

• -180.0 - +180.0(alt)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Flag fields with *4 returned from callang(flag_nighttime1-24)
• Downwelling Longwave Diffuse Hemispheric Irradiance, Ventilated Pyrgeometer(down_long_diffuse_hemisp)
• MFRSR Detector Temperature(mfrsr_temp)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Time offset from base_time(time_offset)
• Ventilated Pyrgeometer Case Temperature(down_long_case_temp)
• Data Logger Temperature(logger_temp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Flag fields with *1 returned from callang(flag_zero_divisor1-24)
• lon(lon)
• MFRSR channels(channel)
• base time in epoch(base_time)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• 10 meter Longwave Dome Temperature, Pyrgeometer(up_long_dome_temp)
• Direct Normal Irradiance, MFRSR(direct_norm_broadband)
• 25 meter Longwave Case Temperature, Pyrgeometer(up_long_case_temp)
• Diffuse Hemispheric Broadband Irradiance, offset corrected(diffuse_hemisp_broadband)
• Flag fields with *2 returned from callang(flag_ln_error1-24)
• Thermistor Excitation Voltage, Data Logger(therm_volt)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Ventilated Pyrgeometer Dome Temperature(down_long_dome_temp)
• North Latitude(lat)
• Hemispheric broadband irradiance(hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Data logger supply voltage(logger_volt)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Flag fields with *3 returned from callang(flag_zero_cosine1-24)