TROPOMI Level 2 Nitrogen Dioxide (NO2), Total And Tropospheric Columns Products in NRT - Sentinel-5P
Abstract:
The TROPOMI NO2 retrieval consists of a three-step procedure, performed on each measured Level-1b spectrum:
1. the retrieval of a total NO2 slant column density (Ns) from the Level-1b radiance and irradiance spectra measured by TROPOMI using a DOAS (Differential Optical Absorption Spectroscopy) method,
2. the separation of the Ns into a stratospheric (N strat s) and a tropospheric (N trop s) part on the basis of information coming from a data assimilation system, and
3. the conversion of the tropospheric slant column density (N trop s) into a tropospheric vertical column density (N trop v) and the computation of the averaging kernel (A), by applying an appropriate AMF based on a look-up table of altitude-dependent AMFs and actual, daily information on the vertical distribution of NO2 from the TM5-MP model on a 1×1 grid. The altitude-dependent AMF depends on the satellite geometry, terrain eight, cloud fraction and height and surface albedo.
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Metadata Information
General
Attribute | Value |
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fileIdentifier/identifier | urn:x-wmo:md:int.eumetsat:EO:EUM:DAT:0076 |
language | eng |
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hierarchyLevel | series |
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contact | see section contact (role: pointOfContact) |
dateStamp | 2020-11-16 |
metadataStandardName | WMO Core Metadata Profile of ISO 19115 (WMO Core), 2003/Cor.1:2006 (ISO 19115), 2007 (ISO/TS 19139) |
metadataStandardVersion | 1.3 |
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abstract | see above |
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language | eng |
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organisationName | ESA |
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scope | series |
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