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, 437-471.
The monthly means of NCEP/NCAR Reanalysis (R1) products, archived in
ds090.0 [http://rda.ucar.edu/datasets/ds090.0/] dataset, are
extracted and reorganized into subgroups in this dataset. The
groupings try to combine like and/or commonly used parameter-level
data together. There are also subgroups for each of the four diurnal
monthly means (means of 00Z, 06Z, 12Z, and 18Z separately).
The data files are in WMO GRIB format. Both the monthly means and
their variances are in the same file but in different GRIB records.
Examples of separating monthly means from variances are shown in
All subgroups will be available on line under data
[http://rda.ucar.edu/datasets/ds090.2/#access]. The ones that are
not on line yet will be moved over upon request.