CPC Global Daily Precipitation

CPC Global Precipitation

This data set is part of products suite from the CPC Unified Precipitation Project that are underway at NOAA Climate Prediction Center (CPC). The primary goal of the project is to create a suite of unified precipitation products with consistent quantity and improved quality by combining all information sources available at CPC and by taking advantage of the optimal interpolation (OI) objective analysis technique. See their CPC's data docs for more details. Values are acculated for a day but that day can be at different times for different locations.


* Real-time values change change before N days.

Long Term Means of daily, monthly for years 1981 to 2010 and for years 1991 to 2020 are also provided.

Please acknowledge your use of this data by including text such as CPC Global Unified Precipitation data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at https://www.esrl.noaa.gov/psd/ in any documents or publications using these data. They would also appreciate receiving a copy of the relevant publications. This will help PSD to justify keeping the CPC Global Temperature data set freely available online in the future.

* (Interpolation algorithm) Xie_et_al_2007_JHM_EAG.pdf Xie, P., A. Yatagai, M. Chen, T. Hayasaka, Y. Fukushima, C. Liu, and S. Yang (2007), A gauge-based analysis of daily precipitation over East Asia, J. Hydrometeorol., 8, 607. 626.
* (Gauge Algorithm Evaluation) Chen_et_al_2008_JGR_Gauge_Algo.pdf Chen, M., W. Shi, P. Xie, V. B. S. Silva, V E. Kousky, R. Wayne Higgins, and J. E. Janowiak (2008), Assessing objective techniques for gauge-based analyses of global daily precipitation, J. Geophys. Res., 113, D04110, doi:10.1029/2007JD009132.
* (Construction of the Daily Gauge Analysis) Chen_et_al_2008_Daily_Gauge_Anal.pdf Chen, M., P. Xie, and Co-authors (2008), CPC Unified Gauge-based Analysis of Global Daily Precipiation, Western Pacific Geophysics Meeting, Cairns, Australia, 29 July - 1 August, 2008.

Daily precipitation [mm], Daily Long Term Mean precipitation for 1981 to 2010 [mm], Daily Long Term Mean for 1991 to 2020 [mm], LTM: Count of non-missing values used in mean
Zonal Global by 0.5 deg
Meridional Global by 0.5 deg
Temporal Jan 1979 to present by 1 day (one day delay)
Long Term Means of daily: 1981-2010 and 1991-2020
Static? no
Volume ~378mb/year/variable
Server LODE; public
Source https://psl.noaa.gov/data/gridded/data.cpc.globalprecip.html  
Acquired June 22, 2021
APDRC contact
Supplements https://www.esrl.noaa.gov/psd/data/gridded/data.cpc.globaltemp.html