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Description

Version 3.3 is the current version. Older versions have been superseded by Version 3.3.

Product latency/update: The products are currently paused at September 2024 because the IR input dataset from NCEI requires a new calibration scheme to extend past that point. Once NCEI irons out the calibration, we expect to return to quarterly updates.

The Global Precipitation Climatology Project (GPCP) is the precipitation component of an internationally coordinated set of (mainly) satellite-based global products dealing with the Earth's water and energy cycles, under the auspices of the Global Water and Energy Exchange (GEWEX) Data and Assessment Panel (GDAP) of the World Climate Research Program. As the follow on to the GPCP Version 1.3 One Degree Daily product, GPCP Version 3 (GPCP V3.3) seeks to continue the long, homogeneous precipitation record using modern merging techniques and input data sets. The GPCPV3 suite currently consists of the 0.5-degree Monthly and 0.5-degree Daily. Additional products may be added, which consist of (1) 0.5-degree pentad and (2) 0.1-degree 3-hourly. All GPCPV3 products will be internally consistent. Inputs consist of GPM IMERG in the span 55°N-S, and TOVS/AIRS estimates, adjusted climatologically to IMERG, outside 55°N-S. The Daily estimates are scaled to approximately sum to the Monthly value at each 0.5° grid box. In addition to the final precipitation field, probability of liquid phase estimates are provided globally.

Version Description

GPCPDAYV3.3

Product Summary

Platforms
DMSP ,
NOAA POES ,
Aqua ,
GOES ,
METEOSAT ,
GMS ,
MTSAT ,
Himawari-8 ,
WEATHER STATIONS
Instruments
SSM/I ,
SSMIS ,
TOVS ,
AIRS ,
GOES-15 Imager ,
GOES-16 Imager ,
VISSR-METEOSAT ,
VISSR-GMS ,
MTSAT 1R Imager ,
MTSAT 2 Imager ,
AHI ,
RAIN GAUGES
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1998-01-01 to 2024-09-30
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Divis ion, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESD
Concept ID
C3405928682-GES_DISC
Data State
COMPLETE
Number of Files/Granules
9770
Processing Level
3
Published
Updated
Science Keywords
Precipitation ,
Precipitation Rate

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Huffman, G. J. (2024). GPCP Precipitation Level 3 Daily 0.5-Degree V3.3 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/MEASURES/GPCP/DATA307 Date Accessed: 2025-12-13

Documents

READ-ME

PI DOCUMENTATION

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
lat Center latitude degrees_north float32 N/A N/A N/A
lon Center longitude degrees_east float32 N/A N/A N/A
precip precip mm/day float32 -99999 N/A N/A
probability_liquid_phase probability_liquid_phase percent int16 -9999 N/A N/A
time Observation Time minutes since 1979-01-01 00:00:00 float64 N/A N/A N/A
time_bnds time_bnds N/A float64 N/A N/A N/A
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