Earth Data School
About
Full catalog/GPM_1CMETOPCMHS
GPM_1CMETOPCMHS·v07·dataset

Raw microwave brightness readings (GPM, MetOp-C)

GPM MHS on METOP-C Common Calibrated Brightness Temperature L1C 1.5 hours 17 km V07 (GPM_1CMETOPCMHS) at GES DISC
atmosphere NASA GES_DISC Level 1 active
In plain English

What it measures. Raw but carefully calibrated readings of how warm the atmosphere appears in five microwave channels, captured along the satellite's track. These brightness readings are an early input, not finished rain estimates.

How it's made. Collected by the MHS microwave instrument on the MetOp-C satellite, then recalibrated to a common standard so it lines up consistently with similar sensors on other satellites in the GPM network.

How & where you'd use it. A building-block input used to produce consistent precipitation products across many satellites. Most people use the finished rain products rather than these raw brightness readings.

What's measured

ATMOSPHERE › ATMOSPHERIC WATER VAPORATMOSPHERE › PRECIPITATION

Coverage & cadence

  • Time span2018-11-16 → ongoing
  • Measured byMETOP-C (MHS)
  • Processing levelLevel 1
  • 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 07 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 07. All 1C products have a common L1C data structure, simple and generic. Each L1C swath includes scan time, latitude and longitude, scan status, quality, incidence angle, Sun glint angle, and the intercalibrated brightness temperature (Tc). One or more swaths are included in a product. The radiometer data are recalibrated to a common basis so that precipitation products derived from them are consistent. 1CMHS contains common calibrated brightness temperature from the MHS passive microwave instrument flown on the NOAA and METOPS satellites. Swath S1 is the only swath and has 5 channels (89.0GHzV, 157.0GHzV, 183.3GHz+/-250MHzH, 183.3GHz+/- 500MHzH, and 190.3 GHzV). MHS is very similar to AMSU-B. The scan period is 2.667s.

Get the data

gpm_1cmetopcmhs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="GPM_1CMETOPCMHS",
    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.