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Intercomparison of Carbon Monoxide Retrievals from SCIAMACHY and AIRS Nadir Observations

Schreier, Franz and Gimeno-Garcia, Sebastian and Lichtenberg, Günter and Hoffmann, Peter (2009) Intercomparison of Carbon Monoxide Retrievals from SCIAMACHY and AIRS Nadir Observations. ESA-ESTEC. Atmospheric Science Conference, 7 - 11 Sep 2009, Barcelona, Spain.

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Official URL: http://www.esa.int/esapub/pi/proceedingsPI.htm

Abstract

Nadir observations in the near or thermal infrared channels of spaceborne spectrometers can be used to derive information on trace gases relevant for climate and air quality. In the course of the ongoing validation of the Beer InfraRed Retrieval Algorithm (BIRRA) developed for operational retrievals of carbon monoxide, methane, etc. vertical column densities from SCIAMACHY near infrared nadir observations, a new retrieval code CERVISA (Column EstimatoR Vertical Infrared Sounding of the Atmosphere) has been implemented for analysis of thermal in frared nadir observations of AIRS, TES, or IASI. Both codes share a large portion of routines, e.g., for line-by line molecular 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 infrared with sun irradiance as source versus Schwarzschild’s equation for the thermal infrared. In this contribution, we present first results of the intercomparison of CO vertical column densities retrieved from AIRS and SCIAMACHY, including comparisons with the “official” AIRS carbon monoxide product.

Document Type:Conference or Workshop Item (Poster)
Title:Intercomparison of Carbon Monoxide Retrievals from SCIAMACHY and AIRS Nadir Observations
Authors:
AuthorsInstitution or Email of Authors
Schreier, Franzfranz.schreier@dlr.de
Gimeno-Garcia, SebastianUNSPECIFIED
Lichtenberg, GünterUNSPECIFIED
Hoffmann, PeterUniversität Leipzig, Institut für Meteorologie
Date:November 2009
Volume:SP-676
Page Range:pp. 1-6
Editors:
EditorsEmail
Lacoste, HUNSPECIFIED
Publisher:ESA-ESTEC
Status:Published
Keywords:Atmosphere, Remote Sensing, Carbon Monoxide, ENVISAT-SCIAMACHY, AQUA-AIRS.
Event Title:Atmospheric Science Conference
Event Location:Barcelona, Spain
Event Type:international Conference
Event Dates:7 - 11 Sep 2009
Organizer:ESA
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:05 Feb 2010 15:39
Last Modified:12 Dec 2013 20:53

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