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Full catalog/TRPSDL2O3OMIFS
TRPSDL2O3OMIFS·v1·dataset

Ozone in the air, detailed (Aura)

TROPESS OMI-Aura L2 Ozone for Forward Stream, Standard Product V1 (TRPSDL2O3OMIFS) at GES DISC
atmosphere NASA GES_DISC Level 2 active
In plain English

What it measures. Reports how much ozone is present at different altitudes in the atmosphere, together with uncertainty estimates. This includes ozone low down, where it is a harmful pollutant.

How it's made. Calculated from the OMI instrument on NASA's Aura satellite using the TROPESS estimation method, provided as daily files of vertical profiles.

How & where you'd use it. Useful for tracking air quality, studying the chemistry of ozone in the lower atmosphere, and checking climate and pollution models.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › OXYGEN COMPOUNDS › ATMOSPHERIC OZONE

Coverage & cadence

  • Time span2021-02-01 → ongoing
  • Measured byAura (OMI)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • StatusACTIVE

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

The TROPESS OMI-Aura L2 Ozone for Forward Stream, Standard Product contains the vertical distribution of the retrieved atmospheric state of ozone (O3), formal uncertainties, and diagnostic information measured by the OMI instrument on the EOS Aura satellite. The forward stream standard product is global for the time period from 2021-02-01 to present. The NASA TRopospheric Ozone and Precursors from Earth System Sounding (TROPESS) project, uses an optimal estimation algorithm, known as the MUlti-SpEctra, MUlti-SpEcies, Multi-SEnsors (MUSES). The data files are written in the netCDF version 4 file format, and each file contains one day of data. The data have a spatial resolution of 13 km x 24 km (OMI nadir FOV), and are reported at 26 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsdl2o3omifs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSDL2O3OMIFS",
    version="1",
    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.