CPC Merged Analysis of Precipitation CMAP includes monthly and pentad global gridded precipitation means. It has a standard version and one enhanced with NCEP Reanalysis. CMAP covers from 1979 to near the present on a global grid at 2.5 degree latitude x 2.5 degree longitude resolution. For more information you can check the original data soruce on the NOAA Physical Sceince Laboratory (PSL) website and the UCAR climate data guide for a review of the dataset. The original data is created by NOAA Climate Prediction Center (CPC) and it is in ascii format, we download a netcdf version from PSL. For this reason the dat is updated irregularly.
CMAP at NCI
We downloaded CMAP in
/g/data/ua8/Precipitation/CMAP There are two sub-folders:
- enh - for enhanced monthly
precip.mon.ltm.nc - enhanced long term monthly mean, derived from years 1981 to 2010
precip.mon.mean.nc - enhanced monthly mean from 1979/01 to 2021/03
precip.pentad.mean.nc - enhanced pentad mean from 1979/01 to 2016/12/27
std - for standard monthly
precip.mon.ltm.nc - standard long term monthly mean, derived from years 1981 to 2010
precip.mon.mean.nc - standard monthly mean from 1979/01 to 2021/03
precip.pentad.mean.nc - standard pentad mean from 1979/01 to 2016/12/27
Our last update was on the 26/04/2021. The previously downloaded version is kept for reference in the previous_version sub-folders.
- Xie, P., and P.A. Arkin, 1997: Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Amer. Meteor. Soc., 78, 2539 - 2558.
- Please note: If you acquire CMAP Precipitation data products from PSL, we ask that you acknowledge us in your use of the data. This may be done by including text such as CMAP Precipitation data provided by the NOAA/OAR/ESRL PSL, Boulder, Colorado, USA, from their Web site at / in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSL to justify keeping the CMAP Precipitation data set freely available online in the future. Thank you!
- Huffman, G. J. and co-authors, 1997: The Global Precipitation Climatology Project (GPCP) combined data set. Bull. Amer. Meteor. Soc., 78, 5-20.
- Reynolds, R. W., 1988: A real-time global sea surface temperature analysis. J. Climate, 1, 75-86.
- Spencer, R. W., 1993: Global oceanic precipitation from the MSU during 1979-91 and comparisons to other climatologies. J. Climate, 6, 1301-1326.
- Xie P., and P. A. Arkin, 1997: Global precipitation: a 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Amer. Meteor. Soc., 78, 2539-2558.