Earth System Research Laboratory Physical Sciences Division

nca3-ncep-ncar-r1

NCEP/NCAR Reanalysis

Published in 1996. Version 2.

The NCEP/NCAR Reanalysis 1 project is using a state-of-the-art analysis/forecast system to perform data assimilation using past data from 1948 to the present. A large subset of this data is available from PSD in its original 4 times daily format and as daily averages. However, the data from 1948-1957 is a little different, in the regular (non-Gaussian) gridded data. That data was done at 8 times daily in the model, because the inputs available in that era were available at 3Z, 9Z, 15Z, and 21Z, whereas the 4x daily data has been available at 0Z, 6Z, 12Z, and 18Z. These latter times were forecasted and the combined result for this early era is 8x daily. The local ingestion process took only the 0Z, 6Z, 12Z, and 18Z forecasted values, and thus only those were used to make the daily time series and monthly means here.

http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html

Identified by : N/A

This dataset was released on March 01, 1996.

The temporal extent of this dataset is 1948-01-01T00:00:00/2014-01-31T23:59:59.

Provenance

• 4 images were derived from this dataset : image b229781f, image 31d7c787, image 54e8d7d2, image e6201ce4

When citing this dataset please refer to Kalnay, E., M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woollen, Y. Zhu, M. Chelliah, W. Ebisuzaki, W. Higgins, J. Janowiak, K.C. Mo, C. Ropelewski, J. Wang, A. Leetmaa, R. Reynolds, R. Jenne, and D. Joseph, 1996: The NCEP/NCAR 40-year Reanalysis Project. Bull. Amer. Meteor. Soc., 77, 437-470.

Attributes : Various monthly mean and derived variables as described in data set cited paper