Earth Data School
About
Full catalog/GPM_1CNOAA21ATMS
GPM_1CNOAA21ATMS·v07·dataset

Raw microwave brightness from space (NOAA-21, 17 km)

GPM ATMS on NOAA-21 Common Calibrated Brightness Temperatures L1C 1.5 hours 17 km V07 (GPM_1CNOAA21ATMS) at GES DISC
atmosphere NASA GES_DISC Level 1 active
In plain English

What it measures. How much microwave energy the instrument detects coming from Earth and its atmosphere, across 22 channels, expressed as a temperature-like brightness value.

How it's made. Produced from the ATMS microwave instrument flying on NOAA-21 and similar satellites, calibrated to a common standard at an early processing stage.

How & where you'd use it. A raw building-block input feeding weather forecasting and atmospheric products like temperature and moisture profiles, rather than something used directly.

What's measured

ATMOSPHERE › ATMOSPHERIC WATER VAPORATMOSPHERE › PRECIPITATION

Coverage & cadence

  • Time span2023-02-01 → ongoing
  • Measured byNOAA-21 (ATMS)
  • 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 Older versions will no longer be available and have been superseded by Version 07. 1CATMS contains common calibrated brightness temperature from the ATMS passive microwave instrument flown on the Suomi NPP satellite and JPSS satellites. ATMS is approximatly a combination of the AMSU-A channels and the MHS channels, to the total of 22 channels. ATMS rotates 3 scans per 8 seconds. 1CATMS contains 4 swaths, one for each band K, A(Ka), W, and G.

Get the data

gpm_1cnoaa21atms_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="GPM_1CNOAA21ATMS",
    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.