| Definition |
This portion of UV is relevant for solar irradiance, absorbing aerosol, the Hartley and Huggins ozone bands, and several species such as BrO, ClO, HCHO, NO, NO2 and SO2. Involved instrument types:
• Moderate resolution optical imager,
• Cross-nadir scanning SW sounder,
• Limb sounder. |
| Relevant instruments and their contribution |
The sorting column describes how the instruments, by design, have the potential to
contribute to certain pre-determined capabilities, assuming nominal operation of
space and ground segments. For this particular capability, instrument performance
is considered to be driven by:
- the spectral interval, specifically whether it goes below 310 nm
- the orbit (GEO or LEO)
- whether it is a spectrometer or a radiometer.
The rating criteria are as follows:
- Spectrometer for wavelengths 200-400 for the Hartley and Huggins ozone bands, and several species such as BrO, ClO, HCHO, NO, NO2 and SO2, and aerosol, flown in LEO.
- Spectrometer for wavelengths 200-400 for the Hartley and Huggins ozone bands, and several species such as BrO, ClO, HCHO, NO, NO2 and SO2, and aerosol, with frequent sampling from GEO; OR Spectrometer for wavelengths 310-400 for the Huggins ozone band, and several species such as HCHO, SO2, and aerosol, flown in LEO.
- Limb sounder for atmospheric chemistry in the high troposphere and low stratosphere.
- Medium-resolution imager with UV channels for absorbing aerosol.
- UV spectroradiometer with few channels, essentially addressing ozone.
|
Instruments covering 200-400 nm