Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily)
Precipitation - GPCP Daily
Sample Image
The GPCP Daily analysis is a companion to the GPCP Monthly analysis, and provides globally complete precipitation estimates at a spatial resolution of one degree latitude-longitude and daily time scale from October 1996 to the present. Although derived using both some of the same, but also different, data sets and methods than used in the GPCP Monthly analysis, the GPCP Daily "adds up" to the GPCP Monthly. The GPCP Daily V1.3 analysis is currently computed by the University of Maryland and submitted to NCEI. The routine update of the product takes place two months after the end of the month, once all input data sets become available. The data set is part of World Climate Research Program (WCRP) and GEWEX activities, being part of the array of data sets describing the water and energy cycles of the planet under the auspices of the GEWEX Data and Assessment Panel (GDAP). Details of input data sets and methods can be found in: Huffman, G.J., R.F. Adler, M. Morrissey, D.T. Bolvin, S. Curtis, R. Joyce, B McGavock, J. Susskind, 2001: Global Precipitation at One-Degree Daily Resolution from Multi-Satellite Observations. J. Hydrometeor., 2(1), 36-50.
- Cite as: Adler, Robert; Wang, Jian-Jian; Sapiano, Mathew; Huffman, George; Bolvin, David; Nelkin, Eric; and NOAA CDR Program (2017). Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily) [Indicate subset used.]. NOAA National Centers for Environmental Information. doi:10.7289/V5RX998Z [access date]
- Please refer to Credit tab for full citation information.
| Download Data |
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| Distribution Formats |
- netCDF (Version: 4)
- File Specification: The NetCDF data files comply with the Climate and Forecast (CF) Metadata Conventions and the NetCDF Attribute Convention for Dataset Discovery (ACDD).
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| Ordering Instructions |
Contact NCEI for other distribution options and instructions. |
| Distributor |
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
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| Dataset Point of Contact |
Customer Engagement Branch
NOAA National Centers for Environmental Information
1-828-271-4800
ncei.orders@noaa.gov
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| Dataset Point of Contact |
NOAA Climate Data Record Program Office
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 (828) 271-4800
gpcp_contacts@noaa.gov
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| Time Period |
1996-10-01 to Present (time interval: 1-day) |
| Spatial Bounding Box Coordinates |
West: -180.0
East: 180.0
South: -90.0
North: 90.0
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| Spatial Coverage Map |
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| General Documentation |
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| Processing Documents |
- Source Code Package for GPCP CDR
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CDR Source Code (download)
This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
- GPCP Daily Analysis (V1.3) Data Flow Diagram
- Climate Algorithm Theoretical Basis Document for GPCP CDR
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| Associated Resources |
- Data Stewardship Maturity Report for Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily)
- Data Stewardship Maturity Report for Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily)
- Huffman et al. (2001) J. Hydrometeor., 2(1), 36-50.
- Global Precipitation Climatology Project (GPCP) - Daily, Version 1.2 (Version Superseded)
- Global Precipitation Climatology Project (GPCP)
- Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 2.3 (Monthly)
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| Publication Dates |
- publication: 2017-09-15
- creation: 2017-05-01
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| Edition |
Version 1.3 |
| Data Presentation Form |
Digital image
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| Dataset Progress Status |
Ongoing - data is continually being updated |
| Data Update Frequency |
Monthly |
| Supplemental Information |
The GPCP Daily Version 1.3 Combined Precipitation Data Set, covering the period October 1996 through the present (with 2+ months delay). The primary product in the dataset is a combined observation-only dataset in the form of a gridded analysis based on satellite estimates of precipitation and the GPCP Monthly analysis.
The data set archive consists of monthly unformatted REAL*4 binary files with ASCII headers, each of which holds 28-31 daily fields. Each file occupies almost 5 MB. The grid on which each field of values is presented is a 1 deg x 1 deg latitude--longitude (Cylindrical Equal Distance) global array of points. It is size 360x180, with X (longitude) incrementing most rapidly West to East from the Prime Meridian, and then Y (latitude) incrementing North to South. |
| Purpose |
This dataset provides the basis for analysis of precipitation means and variations from the global scale to regional scales with a daily time resolution and uses both satellite and in situ precipitation observations. |
| Use Limitations |
- Although large-scale time and space biases are limited by scaling the analysis to the GPCP Monthly analysis, the accuracy of individual daily estimates at fine resolution is limited. See the Algorithm Theoretical Basis Document for a description of the use limitations for this dataset.
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| Dataset Citation |
- Cite as: Adler, Robert; Wang, Jian-Jian; Sapiano, Mathew; Huffman, George; Bolvin, David; Nelkin, Eric; and NOAA CDR Program (2017). Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily) [Indicate subset used.]. NOAA National Centers for Environmental Information. doi:10.7289/V5RX998Z [access date]
- Publications using this dataset should also cite the following journal article: Huffman, G.J., R.F. Adler, M. Morrissey, D.T. Bolvin, S. Curtis, R. Joyce, B McGavock, J. Susskind, 2001: Global Precipitation at One-Degree Daily Resolution from Multi-Satellite Observations. J. Hydrometeor., 2(1), 36-50.
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| Cited Authors |
- Adler, Robert
University of Maryland
- Wang, Jian-Jian
University of Maryland
- Sapiano, Mathew
University of Maryland
- Huffman, George
NASA
- Bolvin, David
NASA
- Nelkin, Eric
NASA
- NOAA CDR Program
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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| Principal Investigators |
- Adler, Robert
University of Maryland
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| Collaborators |
- Wang, Jian-Jian
University of Maryland
- Sapiano, Mathew
University of Maryland
- Huffman, George
NASA
- Bolvin, David
NASA
- Nelkin, Eric
NASA
- NOAA CDR Program
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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| Publishers |
- NOAA National Centers for Environmental Information
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| Theme keywords |
Global Change Master Directory (GCMD) Science Keywords- Earth Science > Atmosphere > Precipitation
Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)- Atmospheric - Surface - Precipitation
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| Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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| Platform keywords |
Global Change Master Directory (GCMD) Platform Keywords
- GOES (Geostationary Operational Environmental Satellite)
- NOAA POES (Polar Orbiting Environmental Satellites)
- DMSP (Defense Meteorological Satellite Program)
- AQUA > Earth Observing System, AQUA
- METEOSAT
- MTSAT > Multi-functional Transport Satellite
- GMS (Japan Geostationary Meteorological Satellite)
- Meteorological Stations
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| Instrument keywords |
Global Change Master Directory (GCMD) Instrument Keywords
- SSM/I > Special Sensor Microwave/Imager
- SSMIS > Special Sensor Microwave Imager/Sounder
- TOVS > TIROS Operational Vertical Sounder
- AIRS > Atmospheric Infrared Sounder
- Rain Gauges
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| Place keywords |
Global Change Master Directory (GCMD) Location Keywords- Geographic Region > Global
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| Project keywords |
Global Change Master Directory (GCMD) Project Keywords
- GPCP > Global Precipitation Climatology Project
- NOAA Climate Data Record (CDR) Program
- NOAA OneStop Project
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| Data Resolution keywords |
Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
Global Change Master Directory (GCMD) Temporal Data Resolution Keywords
Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords- 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
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| Stratum keywords |
Global Change Master Directory (GCMD) Location Keywords
- Vertical Location > Land Surface
- Vertical Location > Sea Surface
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| Use Constraints |
- Cite as: Adler, Robert; Wang, Jian-Jian; Sapiano, Mathew; Huffman, George; Bolvin, David; Nelkin, Eric; and NOAA CDR Program (2017). Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 1.3 (Daily) [Indicate subset used.]. NOAA National Centers for Environmental Information. doi:10.7289/V5RX998Z [access date]
- Publications using this dataset should also cite the following journal article: Huffman, G.J., R.F. Adler, M. Morrissey, D.T. Bolvin, S. Curtis, R. Joyce, B McGavock, J. Susskind, 2001: Global Precipitation at One-Degree Daily Resolution from Multi-Satellite Observations. J. Hydrometeor., 2(1), 36-50.
- See the Use Agreement for this CDR available on the CDR page.
- Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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| Access Constraints |
- Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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| Fees |
- In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
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| Lineage information for: dataset |
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| Lineage Statement |
The data were produced through a joint effort between the University of Maryland and NASA and are archived at the NOAA National Centers for Environmental Information (NCEI). See associated documentation for more information about the creation of the dataset. |
| Processor |
- UMD/ESSIC > Earth System Science Interdisciplinary Center, University of Maryland
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| Processing Steps |
- The GPCP Daily code is made up of around 150 individual code files, which are distributed among 6 modules of code plus another 4 codes to create file listings and perform pre- and post processing diagnostics. The code is run by a single driver code (shell script)in the main directory that mirrors the monthly code (GPCPcdr_ECPd_Process1month.sh) that performs a check that all data is present and then calls each of the constituent parts of the processing code.
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| Processing Environment |
Generation of the GPCP Monthly analysis is accomplished using moderate-sized workstations at the University of Maryland |
| Processing Documents |
- Source Code Package for GPCP CDR
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CDR Source Code (download)
This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
- GPCP Daily Analysis (V1.3) Data Flow Diagram
- Climate Algorithm Theoretical Basis Document for GPCP CDR
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| Source Datasets |
- GPCC Full Data Reanalysis Version 7 Landing Page
- GPCC Monitoring Product: Near Real-Time Monthly Land-Surface Precipitation from Rain-Gauges based on SYNOP and CLIMAT data
- Globally Merged IR data
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Globally Merged IR data
Source dataset used in the product of GPCP v1.3 Daily
- Description of Source: Globally Merged IR data
- Temporal extent used: 1996-10-01 to Present
- Spatial extent used: N:60 S:-60 E:180 W:-180
- SSMI(S) Brightness Temperature - RSS
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SSMI(S) Brightness Temperature - RSS
Source dataset used in the product of GPCP v1.3 Daily
- Description of Source: NCEI RSS SSMI/SSMIS
- Temporal extent used: 1996-10-01 to Present
- Spatial extent used: N:90 S:-90 E:180 W:-180
- AIRS Version 6 Data
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AIRS Version 6 Data
Source dataset used in the product of GPCP v1.3 Daily
- Description of Source: AIRS
- Temporal extent used: 2003 to Present
- Spatial extent used: N:90 S:-90 E:180 W:-180
- Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager Sounder (SSMIS) Global Gridded Products
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| Lineage information for: repository |
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| Processing Steps |
- 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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Last Modified: 2023-08-10
For questions about the information on this page, please email:
ncei.info@noaa.gov
