NCEP–DOE AMIP-II Reanalysis (R-2)

2002/11/01 by Masao Kanamitsu, Wesley Ebisuzaki, Jack Woollen +6 · 5,431 citations
Earth and Planetary Sciences · Environmental Science · #Atmospheric and Environmental Gas Dynamics #Climate variability and models #Climatology #Data assimilation #Environmental science #Geography #Geology #Geopotential #Geopotential height #Meteorological Phenomena and Simulations #Meteorology #Northern Hemisphere #Satellite

paper · pdf · doi:10.1175/bams-83-11-1631

published in Bulletin of the American Meteorological Society 83(11), 1631-1644 (American Meteorological Society)

openalex publication_date 2002/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The NCEP–DOE Atmospheric Model Intercomparison Project (AMIP-II) reanalysis is a follow-on project to the “50-year” (1948–present) NCEP–NCAR Reanalysis Project. NCEP–DOE AMIP-II re-analysis covers the “20-year” satellite period of 1979 to the present and uses an updated forecast model, updated data assimilation system, improved diagnostic outputs, and fixes for the known processing problems of the NCEP–NCAR reanalysis. Only minor differences are found in the primary analysis variables such as free atmospheric geopotential height and winds in the Northern Hemisphere extratropics, while significant improvements upon NCEP–NCAR reanalysis are made in land surface parameters and land–ocean fluxes. This analysis can be used as a supplement to the NCEP–NCAR reanalysis especially where the original analysis has problems. The differences between the two analyses also provide a measure of uncertainty in current analyses.

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