Subject: | SGP/SIRS/E24 - NIP shaded near sunrise |
DataStreams: | sgpsirs20sE24.a0, sgpsirsE24.b1
|
Description: | The NIP is shaded by the EF laptop computer enclosure near sunrise during parts of the
Spring and Summer. This has occurred from 04/08 to 05/20 and from 07/26 to 09/06 every year
since 2001 and will occur during these date ranges in the future as well. The shading
occurs for a few minutes each day between 1200 and 1300 GMT depending on the time of the
year. For the early dates, shading occurs a little after 1200 GMT and by 05/20 shading
happens nearer to 1300 GMT. In late July the shading occurs near 1300 GMT and closer to
1200 GMT by 09/06. |
Suggestions: | Avoid sunrise data during the indicated date ranges. |
Measurements: | sgpsirsE24.b1: - Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
- Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
- Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
- Shortwave direct normal irradiance, pyrheliometer, minima(short_direct_normal_min)
more
sgpsirs20sE24.a0: - Instantaneous direct normal shortwave irradiance, pyrheliometer thermopile
voltage(inst_direct_normal) more
|