S. M. Davis, and K. H. Rosenlof
The Stratospheric Water and Ozone Satellite
Homogenized (SWOOSH) database: A long-term database
for climate studies and assessment of reanalyses
Vertical profiles of humidity from the upper troposphere
to stratosphere have been retrieved from several
different limb sounding and solar occultation
satellite instruments since the 1980's. Instruments
retrieving water vapor include the SAGE and POAM
instruments, UARS MLS, UARS HALOE, and most recently,
ACE-FTS and Aura MLS, among others. Here, we present
ongoing work aimed at combining these measurements
into a geographically gridded data set that can be
used for quantifying variability and long-term changes
in water vapor, and can be used for assessing the
radiative impact of changes in upper tropospheric and
stratospheric humidity. In this poster, we describe
the process of merging the various data sets, which
are gridded into a monthly mean product using both
geographic and PV-based equivalent latitude in the
horizontal, and pressure and isentropic levels in
the vertical. Coincident observations during overlap
periods in the satellite record are used to construct
bias corrections for each instrument that can be
allowed to vary in both the horizontal and vertical.
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