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Full catalog/g3assp
g3assp·v004·dataset

Gases in the upper air at sunrise/sunset (Meteor-3M)

SAGE III Meteor-3M L2 Solar Event Species Profiles (HDF-EOS) V004
atmosphere NASA LARC_CLOUD Level 2 HDF4
In plain English

What it measures. Vertical profiles of gases in the upper atmosphere, captured during a single sunrise or sunset as the satellite watched the sun through the air.

How it's made. Derived from the SAGE III instrument on the Russian Meteor-3M satellite, processed into geophysical gas measurements for each solar event.

How & where you'd use it. Helps scientists track ozone and other trace gases high in the atmosphere. This is a focused research product for atmospheric chemistry studies.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › NITROGEN COMPOUNDS › CLOUD-SCREENED TOTAL COLUMN NITROGEN DIOXIDE (NO2)ATMOSPHERE › ATMOSPHERIC CHEMISTRY › OXYGEN COMPOUNDS › ATMOSPHERIC OZONE › OZONE PROFILES

Coverage & cadence

  • Time span2001-12-10 → 2005-11-13
  • Measured byMeteor-3M (SAGE III)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • FormatsHDF4
  • 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

A Level 2 data file containing all the species products for a single solar event

Get the data

g3assp_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="g3assp",
    version="004",
    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 LARC_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.