Aerosol column burden | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV (for absorbing aerosol), VIS, NIR and SWIR spectrometry including the 760 nm band for high-level aerosol |
Aerosol effective radius | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV spectrometry for absorbing aerosol |
Aerosol mass mixing ratio | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV spectrometry for absorbing aerosol |
Aerosol Optical Depth | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV, VIS, NIR and SWIR spectrometry including the 760 nm band for high-level aerosol |
Aerosol type | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV spectrometry for absorbing aerosol |
Cloud cover | 4 - fair | Daylight only.. Along-track only. | VIS, NIR and SWIR spectroscopy |
Cloud drop effective radius | 4 - fair | At cloud top.. Daylight only.. Along-track only. | VIS, NIR and SWIR spectrometry |
Cloud ice effective radius | 4 - fair | At cloud top.. Daylight only.. Along-track only. | VIS, NIR and SWIR spectrometry |
Cloud optical depth | 2 - very high | Low-density cloud only.. Daylight only.. Along-track only. | VIS, NIR and SWIR spectrometry |
Earth surface albedo* | 4 - fair | Cloud sensitive.. Along-track only. | VIS spectrometry, range fully covered |
Fraction of Absorbed PAR (FAPAR) | 2 - very high | Cloud sensitive.. Along-track only. | VIS spectrometry including Red at 700 nm |
O3 Total Column | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV and VIS spectrometry. Ozone lines in the bands around 260 nm (Hartley) and/or 340 nm (Huggins) and 600 nm (Chappuis) |
Photosynthetically Active Radiation (PAR) | 2 - very high | Cloud sensitive.. Along-track only. | VIS spectrometry, range fully covered |
Integrated Water Vapour (IWV)* | 5 - marginal | Cloud sensitive.. Daylight only.. Along-track only. | NIR spectrometry covering the 940 nm band |
Upward short-wave irradiance at TOA* | 3 - high | Information on BRDF needed.. Along-track only. | UV, VIS, NIR and SWIR spectrometry |
Upward spectral radiance at TOA* | 4 - fair | Missing all Long-waves.. Along-track only. | UV, VIS, NIR and SWIR spectrometry |
Aerosol volcanic ash | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV (specifically sensitive to ash), VIS, NIR and SWIR spectrometry including the 760 nm band for high-level ashl |
Aerosol volcanic ash Total Column | 2 - very high | Cloud sensitive.. Daylight only.. Along-track only. | UV (specifically sensitive to ash), VIS, NIR and SWIR spectrometry including the 760 nm band for high-level ashl |