J. Wright, and S. Fueglistaler
Reanalysis estimates of the diabatic heat budget in the tropical UTLS
Diabatic heat budgets differ significantly among reanalysis datasets.
These differences have substantial implications for representations of
transport and mixing, both within the reanalyses themselves and in
models that use reanalysis data as input. We analyze differences in the
heat budget of the upper troposphere (UT) and lower stratosphere (LS)
among five reanalyses: the Modern Era Retrospective Analysis for
Research and Applications (MERRA), ERA-Interim, the Climate Forecast
System Reanalysis (CFSR), the JRA-25 and JMA Climate Data Assimilation
System, and the NCEP/NCAR Reanalysis. We present annual mean
climatologies for the period 2001–2010, with particular attention paid
to some of the most pronounced differences, along with assessments of
Lagrangian transit time and trajectory dispersion.
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