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requirementstable 2008/05/16 08:41 requirementstable 2008/06/13 15:03 current
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This table shows the reviewed ESA missions. More details are given in {{:rt_requirements.pdf|WP1200 report}}. The table summarizes the objectives of the missions and provides information about required forward modeling capabilities. Most of the information has been obtained from ESA's website: http://www.esa.int This table shows the reviewed ESA missions. More details are given in {{:rt_requirements.pdf|WP1200 report}}. The table summarizes the objectives of the missions and provides information about required forward modeling capabilities. Most of the information has been obtained from ESA's website: http://www.esa.int
 +There is also a table showing the [[requirements_matrix|requirements and missions in a matrix structure]].
===== Envisat ===== ===== Envisat =====
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^instrument^objective^measured quantities^instrumentation^FM requirements^ ^instrument^objective^measured quantities^instrumentation^FM requirements^
|ASAR| measure surface topography and ocean currents  | reflected radar pulses from surface  | Microwave radar: C-band, with choice of 5 polarisation modes | retrieval based on Doppler shift, no radiative transfer required in standard retrieval method; RT useful for error analysis  | |ASAR| measure surface topography and ocean currents  | reflected radar pulses from surface  | Microwave radar: C-band, with choice of 5 polarisation modes | retrieval based on Doppler shift, no radiative transfer required in standard retrieval method; RT useful for error analysis  |
-|MERIS| measure atmosphere and surface properties  | cloud optical depth, cloud top height, water vapor column, surface vegetation, ocean (biology and color)  |  medium-spectral resolution, imaging spectrometer, solar spectral range  | detailed RT models required (BRDFs, clouds, aerosols, ...)  |  +|MERIS| measure atmosphere and surface properties  | cloud optical depth, cloud top height, water vapor column, surface vegetation, ocean (biology and color)  |  medium-spectral resolution, imaging spectrometer, solar spectral range  | detailed RT models required (BRDFs, clouds, aerosols, ...), RT in water
|AATSR| measure atmosphere and surface properties  | sea and land surface temperature, cloud properties, vegetation quantity and quality  | reflected and emitted radiation at 0.55 µm, 0.66 µm, 0.87 µm, 1.6 µm, 3.7 µm, 11 µm and 12 µm  | solar and thermal radiances (correlated-k)  | |AATSR| measure atmosphere and surface properties  | sea and land surface temperature, cloud properties, vegetation quantity and quality  | reflected and emitted radiation at 0.55 µm, 0.66 µm, 0.87 µm, 1.6 µm, 3.7 µm, 11 µm and 12 µm  | solar and thermal radiances (correlated-k)  |
|RA-2 | improve knowledge of topography | surface altitude |  nadir-looking pulse-limited radar altimeter at 13.575 GHz  |retrieval based on time shift of radar echo, no radiative transfer required | |RA-2 | improve knowledge of topography | surface altitude |  nadir-looking pulse-limited radar altimeter at 13.575 GHz  |retrieval based on time shift of radar echo, no radiative transfer required |
 
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