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Full catalog/TOMSEPL3mtoz
TOMSEPL3mtoz·v008·dataset

Total ozone overhead, monthly (Earth Probe)

TOMS Earth Probe Total Column Ozone Monthly L3 Global 1 deg x 1.25 deg Lat/Lon Grid V008 (TOMSEPL3mtoz) at GES DISC
atmosphere NASA GES_DISC Level 3
In plain English

What it measures. Monthly maps of the total amount of ozone in the column of air overhead, on a global 1-by-1.25-degree grid.

How it's made. Produced from the Total Ozone Mapping Spectrometer aboard NASA's Earth Probe satellite, processed into monthly averaged global grids by NASA Goddard.

How & where you'd use it. Useful for tracking the ozone layer, including the ozone hole, and studying long-term changes in atmospheric ozone.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › OXYGEN COMPOUNDS › ATMOSPHERIC OZONE › TOTAL OZONE

Coverage & cadence

  • Time span1996-07-01 → 2005-12-31
  • Measured byEP-TOMS (TOMS)
  • 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

This Earth Probe (EP) Total Ozone Mapping Spectrometer (TOMS) version 8 monthly averaged global gridded data product contains total column ozone values. The data are mapped to a global grid of size 180 x 288 with a lat-long resolution of 1.00 x 1.25 degrees. These data are stored in an ASCII format. The TOMS data were produced by the Laboratory for Atmospheres at NASA Goddard Space Flight Center (Code 614).

Get the data

tomsepl3mtoz_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TOMSEPL3mtoz",
    version="008",
    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.