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Intercomparison of Near Infrared SCIAMACHY and Thermal Infrared Nadir Vertical Column Densities

Schreier, Franz and Gimeno-Garcia, Sebastian and Lichtenberg, Günter and Hess, Michael (2010) Intercomparison of Near Infrared SCIAMACHY and Thermal Infrared Nadir Vertical Column Densities. ESA-ESTEC. ESA Living Planet Symposium, Bergen. ISSN 1609-042X

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Abstract

Nadir infrared (IR) sounding can be used to derive information on trace gases relevant for climate and air quality. For vertical column density retrievals using SCIAMACHY near IR nadir observations, the BIRRA (Beer InfraRed Retrieval Algorithm) code has recently been implemented in the operational level 1 – 2 processor. For analysis of thermal IR nadir observations of AIRS, GOSAT, IASI, or TES, a closely related code CERVISA (Column EstimatoR Vertical Infrared Sounding of the Atmosphere) has been developed. Both codes share a large portion of modules, e.g., for line-by-line absorption and the nonlinear least squares solver. The essential difference is the part of the forward model devoted to radiative transfer through the atmosphere, i.e., Beer’s law for the near IR versus Schwarzschild’s equation for the thermal IR. For the ongoing validation of the BIRRA carbon monoxide CO and methane CH4 products intercomparisons with thermal IR sounding data are performed. CERVISA retrieval results are compared both to the operational products of the IR sounder considered and to SCIAMACHY products retrieved with BIRRA.

Document Type:Conference or Workshop Item (Poster)
Title:Intercomparison of Near Infrared SCIAMACHY and Thermal Infrared Nadir Vertical Column Densities
Authors:
AuthorsInstitution or Email of Authors
Schreier, Franzfranz.schreier@dlr.de
Gimeno-Garcia, SebastianUNSPECIFIED
Lichtenberg, GünterUNSPECIFIED
Hess, MichaelUNSPECIFIED
Date:December 2010
Volume:SP-686
Page Range:pp. 1-5
Editors:
EditorsEmail
Lacoste-Francis, HUNSPECIFIED
Publisher:ESA-ESTEC
ISSN:1609-042X
Status:Published
Keywords:New algorithms and products, regularization, IASI, AIRS, SCIAMACHY
Event Title:ESA Living Planet Symposium
Event Location:Bergen
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung von Atmosphärenprozessoren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Dr.rer.nat. Franz Schreier
Deposited On:20 Jan 2011 11:30
Last Modified:12 Dec 2013 20:47

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