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Assimilation of SBUV Version 8 Radiances into the GEOS Ozone DASIn operational weather forecasting, the assimilation of brightness temperatures from satellite sounders, instead of assimilation of 1D-retrievals has become increasingly common practice over the last two decades. Compared to these systems, assimilation of trace gases is still at a relatively early stage of development, and efforts to directly assimilate radiances instead of retrieved products have just begun a few years ago, partially because it requires much more computation power due to the employment of a radiative transport forward model (FM). This paper will focus on a method to assimilate SBUV/2 radiances (albedos) into the Global Earth Observation System Ozone Data Assimilation Scheme (GEOS-03DAS). While SBUV-type instruments cannot compete with newer sensors in terms of spectral and horizontal resolution, they feature a continuous data record back to 1978, which makes them very valuable for trend studies. Assimilation can help spreading their ground coverage over the whole globe, as has been previously demonstrated with the GEOS-03DAS using SBUV Version 6 ozone profiles. Now, the DAS has been updated to use the newly released SBUV Version 8 data. We will compare pre]lmlnarv results of SBUV radiance assimilation with the assimilation of retrieved ozone profiles, discuss methods to deal with the increased computational load, and try to assess the error characteristics and future potential of the new approach.
Document ID
20040082208
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Mueller, Martin D.
(National Academy of Sciences - National Research Council Greenbelt, MD, United States)
Stajner, Ivanka
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bhartia, Pawan K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: International Quadrennial Ozone Symposium (QOS 2004)
Location: Kos
Country: Greece
Start Date: June 1, 2004
End Date: June 8, 2004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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