Description: | Sometime on 10/13 the SIRS datalogger reverted to the old program used for the previous
set of coefficients (i.e. before the scheduled 9/13 shortwave instrument swapout).
Coefficients were such that the program change didn't result in easily discernable changes in
the data. The longwave instruments were not affected.
The Coefficients applied during this time were as follows (marked "Incorrect"):
Incorrect "Diffuse PSP: 106.83 W/(m^2*mV)\n",
Correct "Diffuse PSP: 113.35 W/(m^2*mV)\n",
Incorrect "PSP-US: 119.40 W/(m^2*mV)\n",
Correct "PSP-US: 117.97 W/(m^2*mV)\n",
Incorrect "NIP: 120.41 W/(m^2*mV)\n",
Correct "NIP: 121.72 W/(m^2*mV)\n",
Incorrect "PSP-DS: 120.26 W/(m^2*mV)\n",
Correct "PSP-DS: 122.52 W/(m^2*mV)\n",
Shortwave data can be corrected by dividing by "Incorrect" coefficient and multiplying
"Correct" coefficient. (e.g. down_short_diffuse_hemisp(cor) =
down_short_diffuse_hemisp*(113.35/106.83)) |
Measurements: | sgpsirsE19.b1: - Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Maxima(down_short_diffuse_hemisp_max) - Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
Deviation(up_short_hemisp_std) - Down-welling unshaded pyranometer voltage(down_short_hemisp)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
- Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
Deviation(down_short_hemisp_std) - Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
- Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
Minima(down_short_diffuse_hemisp_min) - Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
sgpsirs20sE19.a0: - Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
Voltage(inst_direct_normal) - Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
Voltage(inst_global) - Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
Thermopile Voltage(inst_diffuse)
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