| Subject: | ASI/SASZE/M1 - Spectrometer chiller temperature variations |
| DataStreams: | asisaszefilterbandsM1.a1, asisaszevisM1.a1
|
| Description: | Spectrometer chiller temperature variations caused by an incorrectly placed sensor are
apparent as correlated modulations in the signal from the UV-VIS CCD spectrometer. The
magnitude of signal oscillation is small and is only apparent under clear sky for wavelengths
< 450 nm. The variations were reduced to negligible levels by repositioning the sensor on
Aug. 21, 2016. |
| Suggestions: | Either avoid use of zenith irradiance < 450 nm during clear sky or apply a temporal
smoothing function. |
| Measurements: | asisaszefilterbandsM1.a1: - zenith_radiance_415nm
- zenith_transmittance_440nm
- zenith_radiance_368nm
- zenith_transmittance_355nm
- zenith_radiance_340nm
- zenith_transmittance_368nm
- zenith_radiance_387nm
- zenith_radiance_355nm
- zenith_transmittance_387nm
- zenith_transmittance_340nm
- zenith_radiance_440nm
- zenith_radiance_408nm
- zenith_transmittance_415nm
- zenith_transmittance_408nm
more
asisaszevisM1.a1: more
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