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| 21-May-2012 |
 EO Data Access
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Data Products
Summary
Level 1b products
GOMOS product GOM_TRA_1P
GOMOS product GOM_LIM_1P
Level 2 products
GOMOS product GOM_NL__2P
GOMOS product GOM_EXT__2P
GOMOS product GOM_RR__2P
Summary
| Processing Level | Description | Product ID | Size / Coverage |
|---|---|---|---|
| Level 1b | Geolocated calibrated transmission spectra and photometer fluxes | GOM_TRA_1P | Typical : 4 Mbytes/occultation Maximum : 20 Mbytes/occultation |
| Level 1b | Geolocated calibrated limb spectra | GOM_LIM_1P | Typical : 3 Mbytes/occultation Maximum : 14 Mbytes/occultation |
| Level 2 | Atmospheric constituent profiles | GOM_NL__2P | Typical < 0.5 Mbyte/occultation |
| Level 2 | Residual extinction | GOM_EXT_2P | Typical : 2 Mbytes/occultation Maximum : 10 Mbytes/occultation |
| Level 2 | Extracted atmospheric profiles for meteo users | GOM_RR__2P | Typical < 0.5 Mbyte/occultation |
Level 1b products
The following are examples of data in the Level 1b and limb products (resulting from the Level 1b processing chain).
Example 1: Transmission
function at various altitudes for Spectrometer A:
Example 2: Covariance
function at various altitudes for Spectrometer A:
Example 3: Lower background
after stray light and vignetting corrections
at various altitudes for Spectrometer A (Limb product):
GOMOS data products: GOM_TRA_1P
| PRODUCT ID | GOM_TRA_1P |
| NAME | Geolocated Calibrated Transmission Spectra and Photometer Fluxes |
| DESCRIPTION | Level 1b - Localized calibrated
transmissions and photometer fluxes One product corresponds to one occultation. The Level 1b data product contains several fields; the key ones are: - Full transmission spectra. - Central background spectra. - Photometers engineering data. |
| COVERAGE | Tangent height range: 15 km to 100 km Elevation range: +62 to +68 ° Azimuth range: +90° to +190° (with respect to the flight direction) |
| GEOMETRIC RESOLUTION | Vertical sampling per acquisition: 1.7 km maximum (depending on the geometry and the duration of the occultation). |
| SIZE | Typical: 4 Mbytes/occultation (depends on the duration of the occultation) |
GOMOS product GOM_LIM_1P
| PRODUCT ID | GOM_LIM_1P |
| NAME | Level 1b-Limb spectra |
| DESCRIPTION | Localized calibrated upper and lower background spectra (flat-field corrected, with and without stray light). |
| COVERAGE | Tangent height range: 15 km to 100 km Elevation range: +62° to +68° Azimuth range: +90° to +190° (with respect to the flight direction) |
| GEOMETRIC RESOLUTION | Vertical sampling per acquisition: 1.7 km maximum (depending on the geometry/duration of the occultation). |
| SIZE | Typical: 3 Mbytes/occultation (depends on the duration of the occultation) |
Level 2 products
The following are examples of data in the Level 2 and residual extinction products (resulting from the Level 2 processing chain).
Example 1: Profiles of
local densities for all gases:
Example 2: Profile of
column density for ozone:
Example 3: Residual
extinction (difference between corrected transmission
and model transmission) at various altitudes for Spectrometer A:
GOMOS product GOM_NL__2P
| PRODUCT ID | GOM_NL__2P |
| NAME | Level 2-Atmospheric constituents profiles |
| DESCRIPTION | Atmospheric constituents profiles: Vertical and line density profiles of ozone, NO2, NO3, O2, H2O, air, aerosols, temperature, turbulence |
| COVERAGE | Tangent height range: 15 km to 100 km Elevation range: +62° to +68° Azimuth range: +90° to +190° (with respect to the flight direction) |
| SIZE | Typical: << 1 Mbyte/occultation (depends on the duration of the occultation) |
GOMOS product GOM_EXT__2P
| PRODUCT ID | GOM_EXT_2P |
| NAME | Level 2-Residual extinction |
| DESCRIPTION | Recomputed transmission spectra corrected for scintillation and dilution effects, before and after inversion |
| COVERAGE | Tangent height range: 15 km to 100 km Elevation range: +62° to +68° Azimuth range: +90° to +190° (with respect to the flight direction) |
| SIZE | Typical: 2 Mbytes/occultation (depends on the duration of the occultation) |
GOMOS product GOM_RR__2P
| PRODUCT ID | GOM_RR__2P |
| NAME | Level 2-Meteorological product |
| DESCRIPTION | Extracted profiles at reduced spatial resolution for NRT dissemination to meteo users |
| COVERAGE | TBD |
| SIZE | Typical: << 1 Mbyte/occultation (depends on the duration of the occultation) |
Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry