| Subject: | SGP/BRS/C1 - Reprocess: Incorrect calibration |
| DataStreams: | sgpbrsC1.b1, sgpbrs20sC1.a0
|
| Description: | Incorrect calibration factors caused error in irradiance data for
down_short_diffuse_hemisp, down_short_hemisp, short_direct_normal. |
| Suggestions: | Suggested Corrections: Diffuse:
SN 33238 is correct. CF 107.52 is wrong; should
be 110.03.
Perform the following calculation to correct the data:
DD= down_short_diffuse_hemisp:
Old (incorrect) CF: 107.52 [W/m2\mv]
New (correct) CF: 110.03 [W/m2\mv]
DD (new) [W/m2] = DD (old) [W/m2] * 110.03 [W/m2\mv] / 107.52 [W/m2\mv]
--------------------------------------------------------------------------------------------
Suggested Corrections: Global:
SN 30812F3 is correct. CF 119.53 is wrong; should be 128.74
Perform the following calculation to correct the data:
DS= down_short_hemisp:
Instrument Old (incorrect): SN 30811F3
Instrument New (correct): SN 30812F3
Old (incorrect) CF: 119.53 [W/m2\mv]
New (correct) CF: 128.74 [W/m2\mv]
DS (new) [W/m2] = DS (old) [W/m2] * 128.74 [W/m2\mv] / 119.53 [W/m2\mv]
--------------------------------------------------------------------------------------------
Suggested Corrections NIP:
SN 29851E6 is correct. CF 122.91 is wrong; should be 118.37
Perform the following calculation to correct the data:
NIP = short_direct_normal:
Instrument Old (incorrect): SN 34504E6
Instrument New (correct): SN 29851E6
Old (incorrect) CF: 122.91 [W/m2\mv]
New (correct) CF: 118.37 [W/m2\mv]
NIP (new) [W/m2] = NIP (old) [W/m2] * 118.37 [W/m2\mv] / 122.91 [W/m2\mv]
Suggested Corrections: Diffuse:
SN 33238 is correct. CF 107.52 is wrong; should
be 110.03.
Perform the following calculation to correct the data:
DD= down_short_diffuse_hemisp:
Old (incorrect) CF: 107.52 [W/m2\mv]
New (correct) CF: 110.03 [W/m2\mv]
DD (new) [W/m2] = DD (old) [W/m2] * 110.03 [W/m2\mv] / 107.52 [W/m2\mv]
--------------------------------------------------------------------------------------------
Suggested Corrections: Global:
SN 30812F3 is correct. CF 119.53 is wrong; should be 128.74
Perform the following calculation to correct the data:
DS= down_short_hemisp:
Instrument Old (incorrect): SN 30811F3
Instrument New (correct): SN 30812F3
Old (incorrect) CF: 119.53 [W/m2\mv]
New (correct) CF: 128.74 [W/m2\mv]
DS (new) [W/m2] = DS (old) [W/m2] * 128.74 [W/m2\mv] / 119.53 [W/m2\mv]
--------------------------------------------------------------------------------------------
Suggested Corrections NIP:
SN 29851E6 is correct. CF 122.91 is wrong; should be 118.37
Perform the following calculation to correct the data:
NIP = short_direct_normal:
Instrument Old (incorrect): SN 34504E6
Instrument New (correct): SN 29851E6
Old (incorrect) CF: 122.91 [W/m2\mv]
New (correct) CF: 118.37 [W/m2\mv]
NIP (new) [W/m2] = NIP (old) [W/m2] * 118.37 [W/m2\mv] / 122.91 [W/m2\mv] |
| Measurements: | sgpbrs20sC1.a0: - inst_global
- inst_direct_normal
- inst_diffuse
more
sgpbrsC1.b1: - short_direct_normal_min
- down_short_hemisp_min
- down_short_hemisp
- down_short_diffuse_hemisp_min
- short_direct_normal
- down_short_diffuse_hemisp
- short_direct_normal_std
- short_direct_normal_max
- down_short_hemisp_max
- down_short_hemisp_std
- down_short_diffuse_hemisp_std
- down_short_diffuse_hemisp_max
more
|