DQRID : D060703.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/14/2006161207/12/20061830Does not affect quality
more
Subject:
SGP/SIRS/E3 -  Reprocessed and Corrected: Wrong Calibration Coefficients
DataStreams:sgpsirsE3.b1, sgpsirs20sE3.a0
Description:
DATA REPROCESSED and CORRECTED: 


No data were collected from 6/7/2006 0000 to 6/14/2006 1612 due to hardware problems. When 
data resumed on 6/14, all calibration coefficients and serial numbers were for different 
instruments, possibly due to incorrect program loaded on storage module. Correct program 
reloaded by PM/CM Techs on 7/12 1830 GMT. The data were reprocessed to apply the correct 
calibration coefficients for shortwave and longwave data.

The data were archived in September 2016. Please retrieve the reprocessed data for use in 
your analysis.

You may find these data using the ARM Discovery tool at the following link:
http://www.archive.arm.gov/discovery/#v/results/s/finst::sirs/fsite::sgp/ffac::sgp.E1


ORIGINAL DQR CATEGORY: Red( Incorrect)

REPROCESSED and CORRECTED DATA ARCHIVED:2016-09

REPROCESS IDENTIFICATION NUMBER: RID 301

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------



No data were collected from 6/7/2006 0000 to 6/14/2006 1612 due to hardware problems.  
When data resumed on 6/14, ALL calibration coefficients and serial numbers were for 
different instruments possibly due to incorrect program loaded on storage module.  Correct 
program reloaded by PM/CM techs on 7/12 1830GMT

Shortwave data can be corrected with a simple multiplier as shown below.  Longwave data 
must be reprocessed from temperature and netIR data.

The data can be recalibrated as follows:
First divide value by incorrectly applied cal coeff (first number) then multiply by 
correct cal coeff (second number). 
  down_short_diffuse_hemisp	109.52	110.31
  up_short_hemisp		111.61	109.80
  short_direct_normal		115.73	118.82
  down_short_hemisp		122.47	117.34
  up_long_netir 		0.26525 0.2564
  down_long_netir		0.27173	0.2695

Reapply cal coeffs below using up_long_netIR(uV), inst_up_long_dome_temp(K),  
inst_up_long_dome_temp(K) using procedure described in SIRS instrument manual.
  up_long_hemisp
	k0	0.00 W/m^2
	k1	0.2564 W/(m^2*uV)
	k2	1.00 unitless
	k3	-4.00 unitless
	kr	0.000 K/uV

Reapply cal coeffs below using down_long_netIR(uV),inst_down_long_dome_temp
(K),inst_down_long_dome_temp(K).
  down_long_hemisp_shaded	
	k0	0.00 W/m^2
	k1	0.2695 W/(m^2*uV)
	k2	1.00 unitless
	k3	-4.00 unitless
	kr	0.000 K/uV
Suggestions: 
Measurements:sgpsirs20sE3.a0:
  • inst_up_short_hemisp
  • inst_up_long_dome_resist
  • inst_direct_normal
  • inst_up_long_hemisp_tp
  • inst_diffuse
  • inst_global
  • inst_down_long_shaded_dome_resist
  • inst_down_long_shaded_case_resist
  • inst_up_long_case_resist
  • inst_down_long_hemisp_shaded_tp
more
sgpsirsE3.b1:
  • up_long_hemisp_max
  • inst_up_long_dome_temp
  • down_long_hemisp_shaded_min
  • inst_up_long_case_temp
  • up_long_hemisp_std
  • up_short_hemisp
  • down_short_diffuse_hemisp_std
  • down_short_diffuse_hemisp
  • down_short_diffuse_hemisp_max
  • down_short_hemisp_max
  • down_short_hemisp_std
  • down_long_hemisp_shaded_max
  • short_direct_normal
  • up_short_hemisp_std
  • down_long_hemisp_shaded_std
  • up_long_hemisp_min
  • up_short_hemisp_max
  • up_long_netir
  • down_short_diffuse_hemisp_min
  • down_short_hemisp
  • down_short_hemisp_min
  • up_short_hemisp_min
  • short_direct_normal_min
  • inst_down_long_shaded_case_temp
  • inst_down_long_shaded_dome_temp
  • short_direct_normal_std
  • down_long_hemisp_shaded
  • short_direct_normal_max
  • down_long_netir
  • up_long_hemisp
more

Close this window