The Impact of ATOVS Radiance in MERRA Reanalysis

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$A 10 year climatology of cloud fraction and vertical distribution ...$

Contents The idea of reanalysis was initiated for climate changestudy, but the inhomogeneity issue of reanalysisimpedes the full realization of this goal. The new NASA reanalysis (MERRA), and ongoingefforts to minimize the inhomogeneity in MERRA. The impact of NOAA-15 ATOVS in MERRA.
At the Beginning, the Idea of Reanalysis was Initiatedfor Climate Change Study:“to use a frozen state-of-the-art analysis/forecast system andperform data assimilation using past data” (Kalnay et al. 1996),thus “to produce internally consistent, homogeneous,multivariate data sets for the earth's climate system. … and suchdata sets will be quite useful for studying global climatechange” (Bengtsson and Shukla 1988). A fixed assimilation systemeliminates the inhomogeneity caused by analysis/model change.
Page 1: The Impact of ATOVSRadiance in MERR
Page 5 and 6: Features in the NASA MERRA reanalys
Page 8 and 9: Radiosonde, PIBAL wind, aircraft re
Page 10 and 11: The impact of NOAA15 (ATOVS)A two y
Page 12 and 13: The precipitation difference betwee
Page 14 and 15: Change of moisture mainly in the lo
Page 16 and 17: Precipitation removes the additiona
Page 18 and 19: At most areas, the analysis tempera
Page 20 and 21: Associated with the introduction of

The Impact of ATOVS Radiance in MERRA Reanalysis

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