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Sampling bias adjustment for sparsely sampled satellite measurements applied to ACE-FTS carbonyl sulfide observations

Kloos, Corinna and von Hobe, Marc and Höpfner, Michael and Walker, Kaley A. and Riese, Martin and Ungermann, Jörn and Hassler, Birgit and Kremser, Stefanie and Bodeker, Greg E. (2019) Sampling bias adjustment for sparsely sampled satellite measurements applied to ACE-FTS carbonyl sulfide observations. Atmospheric Measurement Techniques (AMT), 12, pp. 2129-2138. Copernicus Publications. doi: 10.5194/amt-12-2129-2019. ISSN 1867-1381.

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Official URL: https://www.atmos-meas-tech.net/12/2129/2019/


When computing climatological averages of atmospheric trace-gas mixing ratios obtained from satellite-based measurements, sampling biases arise if data coverage is not uniform in space and time. Homogeneous spatiotemporal coverage is essentially impossible to achieve. Solar occultation measurements, by virtue of satellite orbit and the requirement of direct observation of the sun through the atmosphere, result in particularly sparse spatial coverage. In this proof-of-concept study, a method is presented to adjust for such sampling biases when calculating climatological means. The method is demonstrated using carbonyl sulfide (OCS) measurements at 16 km altitude from the ACE-FTS (Atmospheric Chemistry Experiment Fourier Transform Spectrometer). At this altitude, OCS mixing ratios show a steep gradient between the poles and Equator. ACE-FTS measurements, which are provided as vertically resolved profiles, and integrated stratospheric OCS columns are used in this study.

Item URL in elib:https://elib.dlr.de/127166/
Document Type:Article
Title:Sampling bias adjustment for sparsely sampled satellite measurements applied to ACE-FTS carbonyl sulfide observations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kloos, CorinnaForschungszentrum JülichUNSPECIFIED
von Hobe, MarcForschungszentrum JülichUNSPECIFIED
Höpfner, MichaelKIT, KarlsruheUNSPECIFIED
Walker, Kaley A.Univ. Toronto, CanadaUNSPECIFIED
Riese, MartinFZ JülichUNSPECIFIED
Ungermann, JörnFZ JülichUNSPECIFIED
Kremser, StefanieBodeker Scientific, New ZealandUNSPECIFIED
Bodeker, Greg E.Bodeker Scientific, New ZealandUNSPECIFIED
Date:April 2019
Journal or Publication Title:Atmospheric Measurement Techniques (AMT)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.5194/amt-12-2129-2019
Page Range:pp. 2129-2138
Publisher:Copernicus Publications
Keywords:satellite measurements, carbonyl sulfide, sampling bias
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 - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Model Evaluation and Analysis
Deposited By: Hassler, Birgit
Deposited On:15 Apr 2019 13:32
Last Modified:27 May 2020 12:30

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