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Profile information on CO from SCIAMACHY observations using cloud slicing and comparison with model simulations

Liu, C. and Beirle, S. and Butler, T. and Hoor, P. and Frankenberg, C. and Jöckel, Patrick and Penning de Vries, M. and Platt, U. and Pozzer, A. and Lawrence, M. G. and Lelieveld, J. and Tost, H. and Wagner, T. (2014) Profile information on CO from SCIAMACHY observations using cloud slicing and comparison with model simulations. Atmospheric Chemistry and Physics, 14 (3), pp. 1717-1732. Copernicus Publications. doi: [10.5194/acp-14-1717-2014]. ISSN 1680-7316.

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Official URL: http://www.atmos-chem-phys.net/14/1717/2014/


We apply a cloud slicing technique (CST), originally developed for Total Ozone Mapping Spectrometer (TOMS) ozone observations, to CO vertical column densities retrieved from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). CST makes use of the shielding effect of clouds and combines trace gas column measurements of cloudy pixels with different cloud heights to retrieve fractional columns aloft. Here we determine seasonal mean tropospheric CO profiles at a vertical resolution of about 1 km, which is much finer than what can be obtained from thermal infrared (IR) instruments. However, since both the atmospheric CO profiles and the effective cloud heights depend systematically on meteorology, and in addition part of the retrieved signal originates from the clear part of the satellite ground pixel, the profiles retrieved from the CST have to be interpreted with care. We compare the seasonal mean SCIAMACHY CO profiles with the output from two atmospheric models sampled in the same way as the satellite observations. We find in general good agreement of the spatial patterns, but systematic differences in the absolute values are observed in both hemispheres (more strongly in the Northern Hemisphere), indicating that the source strengths in the emission inventories are probably underestimated.

Item URL in elib:https://elib.dlr.de/89292/
Document Type:Article
Title:Profile information on CO from SCIAMACHY observations using cloud slicing and comparison with model simulations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Liu, C.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USAUNSPECIFIED
Beirle, S.Max-Planck-Institut für Chemie, MainzUNSPECIFIED
Butler, T.IASS, Potsdam, GermanyUNSPECIFIED
Hoor, P.Institut für Physik der Atmosphäre, Univ. Mainz, GermanyUNSPECIFIED
Frankenberg, C.JPL, Pasadena, USAUNSPECIFIED
Penning de Vries, M.Max-Planck-Institut für Chemie, MainzUNSPECIFIED
Platt, U.Institut für Umweltphysik, Uni Heidelberg, GermanyUNSPECIFIED
Pozzer, A.Institut für Chemie, MainzUNSPECIFIED
Lawrence, M. G.IASS, Potsdam, GermanyUNSPECIFIED
Lelieveld, J.Institut für Chemie, MainzUNSPECIFIED
Tost, H.nstitut für Physik der Atmosphäre, Univ. Mainz, GermanyUNSPECIFIED
Wagner, T.Max-Planck-Institut für Chemie, MainzUNSPECIFIED
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1717-1732
Publisher:Copernicus Publications
Keywords:Carbon Monoxide, Satellite retrieval, cloud slicing, atmospheric modeling, EMAC
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Projekt ENVISAT (old), R - Projekt ESMVal (old), R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Jöckel, Dr. Patrick
Deposited On:10 Jun 2014 12:23
Last Modified:02 May 2019 14:04

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