March 23, 2015
Products
IASI Products
IASI products are classified according to CEOS list.
| Level 0 : | Raw IASI measurement data, after on-ground demultiplexing ; level 0 includes pre-calibrated spectra, the corresponding non calibrated images, calibration images, verification data and auxiliary data necessary for further processing. |
| ------------------------------- | |
| Level 1a : | Non apodised calibrated spectra and corresponding images ; this step of processing comprises data decoding, radiometric post-calibration, spectral calibration, IASI/AVHRR coregistration via IASI images, geolocation and dating. |
| ------------------------------- | |
| Level 1b : | Level 1a resampled. |
| ------------------------------- | |
| Level 1c : | Level 1b apodised to obtain a nominal Instrument Spectral Response Function ; this level includes also an analysis of the AVHRR radiances over the IASI pixels. |
| ------------------------------- | |
| Level 2a : | Geophysical products derived from IASI in a self-standing mode (profiles of temperature, humidity, surface temperature, trace gas distribution, cloud parameters, etc.). Level 2a data may exist as interim geophysical products during the commissioning and pre-operational IASI mission phases and as geophysical products after upgrading of the processing software at the end of the pre-operational phase. Some of them might be merged into a more limited number of geophysical product records depending on the processing architecture and needs of users. |
| ------------------------------- | |
| Level 2b : | Geophysical products derived after co-processing of data from IASI and the METOP meteorological instruments. These products may be similar to level 2a products but with higher accuracy, resolution and/or extracted over a wider range of cloudiness. |
| ------------------------------- | |
| Level 3 : | Gridded and time-averaged geophysical products derived from level 2b products possibly in combination with information obtained from sources other than EPS system. |
| ------------------------------- | |
| Level 4 : | Multisensor geophysical products for instance as results of assimilation in meteorological or chemical transport models. |
| ------------------------------- | |
EPS Products
Hereafter are described EUMETSAT Polar System products and instruments for their derivation in stand-alone or synergetic modes.
| Product | IASI | HIRS | AMSU-A MHS | AVHRR |
| temperature profile | X | X | X | |
| relative humidity profiles | X | X | X | |
| cloud cover | X | X | X | X |
| cloud liquid water content | X | |||
| cloud top temperature | X | X | X | X |
| cloud characterisation | X | X | X | X |
| total precipitable water | X | X | X | |
| precipitation index | X | |||
| sea surface temperature | X | X | X | |
| land surface temperature | X | X | ||
| ozone total column | X | X | ||
| ozone profiles | X | |||
| trace gas total column | X | |||
| aerosol amount | X | X | ||
| air mass determination | X | X | X | |
| vegetation index | X | |||
| sea ice | X | |||
| snow detection | X | X | X | X |
| surface albedo | X | |||
| outgoing long-wave radiation | X | X | X | |
| planetary albedo | X | |||
| downward long-wave flux | X | X | ||
| clear sky flux | X | X | X | |
| air/sea heat flux | X | X | X | |
| cooling rate profiles | X | X | X |
Published in:
