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Climate Dynamics

, Volume 37, Issue 11–12, pp 2541–2550 | Cite as

Assessing the performance of the CFSR by an ensemble of analyses

  • Wesley EbisuzakiEmail author
  • Li Zhang
Article

Abstract

The Climate Forecast System Reanalysis (CFSR, Saha et al. in Bull Am Meteor Soc 91:1015–1057, 2010) is the latest global reanalysis from the National Centers of Environmental Prediction (NCEP). In this study, we compare the CFSR tropospheric analyses to two ensembles of analyses. The first ensemble consists of 12 h analyses from various operational analyses for the year 2007. This ensemble shows how well the CFSR analyses can capture the daily variability. The second ensemble consists of monthly means from the available reanalyses from the years 1979 to 2009 which is used to examine the trends. With the 2007 ensemble, we find that the CFSR captures the daily variability in 2007 better than the older reanalyses and is comparable to the operational analyses. With the ensemble of monthly means, the CFSR is often the outlier. The CFSR shows a strong warming trend in the tropics which is not seen in the observations or other reanalyses.

Keywords

CFSR CFSRR Reanalysis Ensemble 

Notes

Acknowledgments

Craig Long supplied the sonde data for Singapore and Accension Island. Suru Saha and the rest of the CFSR team for creating and supplying the data for the CFSR. Emily Becker downloaded much of the JRA-25 and MERRA data. Bhaskar Jha for supplying the CFSR-AMIP simulations and the reviewers for their comments which improved this paper.

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Copyright information

© Springer-Verlag (outside the USA) 2011

Authors and Affiliations

  1. 1.Climate Prediction Center, NCEP/NWS/NOAACamp SpringsUSA
  2. 2.Climate Prediction Center, NCEP/NWS/NOAACamp SpringsUSA
  3. 3.Wyle Information SystemsMcLeanUSA

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