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Validation of Carbon Monoxide Total Column Retrievals from SCIAMACHY Observations with NDACC/TCCON Ground-Based Measurements

Hochstaffl, Philipp and Schreier, Franz and Lichtenberg, Günter and Gimeno Garcia, Sebastian (2018) Validation of Carbon Monoxide Total Column Retrievals from SCIAMACHY Observations with NDACC/TCCON Ground-Based Measurements. Remote Sensing, 10 (2), pp. 223-252. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/rs10020223 ISSN 2072-4292

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Official URL: http://www.mdpi.com/2072-4292/10/2/223

Abstract

The objective was to validate the carbon monoxide (CO) total column product inferred from Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) full-mission (2003 - 2011) short-wave infrared (SWIR) nadir observations using the Beer InfraRed Retrieval Algorithm (BIRRA). Globally distributed Network for the Detection of Atmospheric Composition Change (NDACC) and Total Carbon Column Observing Network (TCCON) ground-based (g-b) measurements were used as a true reference. Weighted averages of SCIAMACHY CO observations within a circle around the g-b observing system were utilized to minimize effects due to spatial mismatch of space-based (s-b) and g-b observations, i.e., disagreements due to representation errors rather than instrument and/or algorithm deficiencies. In addition, temporal weighted averages were examined and then the unweighted (classical) approach was compared to the weighted (non-classical) method. The delivered distance-based filtered SCIAMACHY data were in better agreement with respect to CO averages as compared to square-shaped sampling areas throughout the year. Errors in individual SCIAMACHY retrievals have increased substantially since 2005. The global bias was determined to be in the order of -10 parts per billion in volume (ppbv) depending on the reference network and validation strategy used. The largest negative bias was found to occur in the northern mid-latitudes in Europe and North America, and was partly caused by insufficient a priori estimates of CO and cloud shielding. Furthermore, no significant trend was identified in the global bias throughout the mission. The global analysis of the CO columns retrieved by the BIRRA shows results that are largely consistent with similar investigations in previous works.

Item URL in elib:https://elib.dlr.de/126667/
Document Type:Article
Title:Validation of Carbon Monoxide Total Column Retrievals from SCIAMACHY Observations with NDACC/TCCON Ground-Based Measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hochstaffl, Philippphilipp.hochstaffl (at) dlr.dehttps://orcid.org/0000-0001-9537-3050
Schreier, FranzFranz.Schreier (at) dlr.dehttps://orcid.org/0000-0001-7196-6599
Lichtenberg, GünterGuenter.Lichtenberg (at) dlr.dehttps://orcid.org/0000-0002-3335-2008
Gimeno Garcia, Sebastiansebastian.gimenogarcia (at) dlr.deUNSPECIFIED
Date:1 February 2018
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI :10.3390/rs10020223
Page Range:pp. 223-252
Editors:
EditorsEmail
Liu, Denisedenise.liu@mdpi.com
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Atmosphere Remote Sensing
ISSN:2072-4292
Status:Published
Keywords:SCIAMACHY; BIRRA; NDACC; TCCON; validation; retrieval; carbon monoxide; mixing ratios; weighted averages
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):Vorhaben Spectroscopic Methods in Remote Sensing
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Hochstaffl, Philipp
Deposited On:05 Mar 2019 10:50
Last Modified:14 Dec 2019 04:26

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