Earth Data School
About
Full catalog/GPCPDAY
GPCPDAY·v3.2·dataset

How much it rained, daily worldwide (GPCP, 0.5 deg)

GPCP Precipitation Level 3 Daily 0.5-Degree V3.2 (GPCPDAY) at GES DISC
atmosphere NASA GES_DISC Level 3
In plain English

What it measures. Daily estimates of how much rain and snow fell worldwide on a half-degree grid, part of a long, consistent global precipitation record. It also includes the likelihood that precipitation fell as liquid.

How it's made. Produced by merging many satellite precipitation sources (including GPM and infrared sounders) and weather-station data, scaled so daily values add up to monthly totals; this version spans June 2000 to December 2020.

How & where you'd use it. Used for climate and water-cycle research and for comparing precipitation patterns consistently over decades.

What's measured

ATMOSPHERE › PRECIPITATIONATMOSPHERE › PRECIPITATION › PRECIPITATION RATE

Coverage & cadence

  • Time span2000-06-01 → 2021-09-30
  • Measured byDMSP (SSM/I) · NOAA POES (TOVS) · Aqua (AIRS) · GOES (GOES-15 Imager, GOES-16 Imager) · METEOSAT (VISSR-METEOSAT) · GMS (VISSR-GMS) · MTSAT (MTSAT 1R Imager, MTSAT 2 Imager) · Himawari-8 (AHI) · WEATHER STATIONS (RAIN GAUGES)
  • Processing levelLevel 3
  • Spatial extent-180, -90, 180, 90
  • StatusCOMPLETE

What you can do with it

  • Map air pollutants — NO₂, aerosols, ozone
  • Track greenhouse gases and Earth's energy budget
  • Feed weather and air-quality analysis
Official description

Version 3.2 has been superseded by Version 3.3 (10.5067/MEASURES/GPCP/DATA307). 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 V3.2) 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. The Daily product spans June 2000-December 2020. 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.

Get the data

gpcpday_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="GPCPDAY",
    version="3.2",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from GES_DISC
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.