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Full catalog/GPM_BASEGPMGMI_RSS
GPM_BASEGPMGMI_RSS·v07·dataset

Raw calibrated microwave brightness, RSS version (GPM)

GPM GMI RSS Common Calibrated Brightness Temperatures L1BASE 1.5 hours 13 km V07 (GPM_BASEGPMGMI_RSS) at GES DISC
atmosphere NASA GES_DISC Level 1 active
In plain English

What it measures. Calibrated brightness temperatures, essentially how much natural microwave energy the sensor recorded across 13 frequency channels, organized by orbit. This is the raw radiometer signal before it is turned into rainfall or other products.

How it's made. A low-level Level-1 calibration product from the GMI microwave imager on the GPM satellite, processed to full precision in the Remote Sensing Systems (RSS) calibration version.

How & where you'd use it. A building-block input that scientists and algorithms feed into higher-level products like rainfall maps, rather than something most people use directly.

What's measured

ATMOSPHERE › ATMOSPHERIC WATER VAPORATMOSPHERE › PRECIPITATION

Coverage & cadence

  • Time span2014-03-04 → ongoing
  • Measured byGPM (GMI)
  • Processing levelLevel 1
  • Spatial extent-180, -70, 180, 70
  • 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 07 is the current version of the data set. Older versions are no longer available and have been superseded by the current version. This GPM GMI dataset contains "GMI Antenna Temperatures", and is written as a multi-Swath Structure. Swath S1 has channels 1-9: 10V 10H 19V 19H 23V 37V 37H 89V 89H. Swath S2 has channels 10-13: 166V 166H 183+/-3V 183+/-8V. GMIBASERSS is the standard GMI calibration product with full precision of all physical fields. It contains one full orbit plus 200 overlap scans from previous orbit and 200 overlap scans from the post orbit.

Get the data

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

results = earthaccess.search_data(
    short_name="GPM_BASEGPMGMI_RSS",
    version="07",
    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.