NCEP Reanalysis (R2)
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Main content
NCEP-DOE Reanalysis II (R2) is an improved version of the NCEP-NCAR Reanalysis I (R1). The improvements include an updated model with better physical parameterizations, assorted data assimilation errors were fixed and additional data were included. Still, it is still a 'first generation' product.
Key Strengths
Key Strengths
Improved version of NCEP-NCAR (R1)
Key Limitations
Key Limitations
Still a 1st generation reanalysis
Low spatial and temporal moisture variability over oceans (mainly model 'first guess' fields)
poor Southern Hemisphere
Please cite data sources, following the data providers' instructions
Suggested Data Citation
NCEP_Reanalysis 2 data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/
Dataset DOIs
None
Hosted Climate Index Files
None
Usage Restrictions
None
Other Information
Earth system components and main variables
Type of data product
Dataset collections
None
Years of record
to
Data time period extended
Yes, data set is extended
Timestep
Sub-daily, Daily, Monthly
Domain
Input Data
Rawindsondes; ICOADS, station data, aircraft, satellite retrievals
Vertical Levels:
None
Missing Data Flag
Spatially complete
Ocean or Land
Ocean & Land
Spatial Resolution
2.5°x2.5° 28 levels 3 hPA top
Model Resolution (reanalysis)
T62 28 levels
Data Assimilation Method
Model Vintage (reanalysis)
2001
Key Publications
- Kanamitsu, M., & others, 2002: NCEP-DOE AMIP-II Reanalysis (R-2), Bull. Amer. Meteor. Soc., 83, 1631-1643.
- Roads, J., M. Kanamitsu, R. Stewart, 2002: CSE Water and Energy Budgets in the NCEP–DOE Reanalysis II. J. Hydrometeor, 3, 227–248.
- Amenu, Geremew G., Praveen Kumar, 2005: NVAP and Reanalysis-2 Global Precipitable Water Products : Intercomparison and Variability Studies. Bull. Amer. Meteor. Soc., 86, 245–256.