Earth Data School
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Full catalog/sentinel-5p-l2-o3-tcl-offl
sentinel-5p-l2-o3-tcl-offl·dataset

Lower-atmosphere ozone, refined satellite maps (Copernicus)

Sentinel-5P Level 2 Tropospheric Ozone (OFFL)
atmosphere ESA ESA Copernicus active
In plain English

What it measures. Tracks ozone concentrations in the troposphere, the layer of air closest to the ground where ozone is a health-damaging pollutant.

How it's made. Comes from the Sentinel-5P satellite, processed to Level-2 in an offline version that trades speed for somewhat better accuracy.

How & where you'd use it. Supports routine air-quality studies, pollution trend analysis, and feeding atmospheric models.

What's measured

SentinelCopernicusESASatelliteGlobalAtmosphereL2O3-TCLOFFLEUEC

Coverage & cadence

  • Time span2018-04-30 → ongoing
  • Spatial extent-180, -90, 180, 90

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 Collection provides Sentinel-5P Level-2 O3 TCL products, which contains high-resolution imagery of tropospheric ozone concentrations.

Get the data

copernicus_access.py
# ESA Copernicus Data Space — open STAC API (free account)
from pystac_client import Client

cat = Client.open("https://stac.dataspace.copernicus.eu/v1")
search = cat.search(
    collections=["sentinel-5p-l2-o3-tcl-offl"],   # add _cog or _nc for a format variant
    bbox=(-10, 35, 30, 60),             # your area (W,S,E,N)
    datetime="2024-01-01/2024-12-31",
)
items = list(search.items())            # then read assets with rioxarray / xarray
Browsing the Copernicus STAC is open; downloading bytes needs a free Copernicus Data Space account.