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The Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database: a long-term database for climate studies

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Title: The Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database: a long-term database for climate studies
Authors: Davis, Sean M. Browse this author
Rosenlof, Karen H. Browse this author
Hassler, Birgit Browse this author
Hurst, Dale F. Browse this author
Read, William G. Browse this author
Vömel, Holger Browse this author
Selkirk, Henry Browse this author
Fujiwara, Masatomo Browse this author →KAKEN DB
Damadeo, Robert Browse this author
Issue Date: 2016
Publisher: Copernicus Publications on behalf of the European Geosciences Union (EGU)
Journal Title: Earth System Science Data
Volume: 8
Issue: 2
Start Page: 461
End Page: 490
Publisher DOI: 10.5194/essd-8-461-2016
Abstract: In this paper, we describe the construction of the Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database, which includes vertically resolved ozone and water vapor data from a subset of the limb profiling satellite instruments operating since the 1980s. The primary SWOOSH products are zonal-mean monthly-mean time series of water vapor and ozone mixing ratio on pressure levels (12 levels per decade from 316 to 1 hPa). The SWOOSH pressure level products are provided on several independent zonal-mean grids (2.5, 5, and 10 ), and additional products include two coarse 3-D griddings (30 long 10 lat, 20 5 ) as well as a zonal-mean isentropic product. SWOOSH includes both individual satellite source data as well as a merged data product. A key aspect of the merged product is that the source records are homogenized to account for inter-satellite biases and to minimize artificial jumps in the record. We describe the SWOOSH homogenization process, which involves adjusting the satellite data records to a “reference” satellite using coincident observations during time periods of instrument overlap. The reference satellite is chosen based on the best agreement with independent balloon-based sounding measurements, with the goal of producing a long-term data record that is both homogeneous (i.e., with minimal artificial jumps in time) and accurate (i.e., unbiased). This paper details the choice of reference measurements, homogenization, and gridding process involved in the construction of the combined SWOOSH product and also presents the ancillary information stored in SWOOSH that can be used in future studies of water vapor and ozone variability. Furthermore, a discussion of uncertainties in the combined SWOOSH record is presented, and examples of the SWOOSH record are provided to illustrate its use for studies of ozone and water vapor variability on interannual to decadal timescales. The version 2.5 SWOOSH data are publicly available at doi:10.7289/V5TD9VBX.
Type: article
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤原 正智

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