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Full catalog/TRPSYL2O3AIRSFS
TRPSYL2O3AIRSFS·v1·dataset

Ozone in the air, summary (Aqua)

TROPESS AIRS-Aqua L2 Ozone for Forward Stream, Summary Product V1 (TRPSYL2O3AIRSFS) at GES DISC
atmosphere NASA GES_DISC Level 2 active
In plain English

What it measures. How much ozone is in the air and how it stacks up through the atmosphere from the surface upward, with uncertainty estimates. This is the condensed 'summary' version.

How it's made. Derived from the AIRS infrared sounder on the Aqua satellite, processed by the TROPESS project's optimal-estimation method into daily global files running from Feb 2021 onward.

How & where you'd use it. Useful for studying air quality near the ground (where ozone is a pollutant) and the broader chemistry of the atmosphere, and for climate and pollution research.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › OXYGEN COMPOUNDS › ATMOSPHERIC OZONE

Coverage & cadence

  • Time span2002-08-30 → ongoing
  • Measured byAqua (AIRS)
  • 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 AIRS-Aqua L2 Ozone for Forward Stream, Summary Product contains the vertical distribution of the retrieved atmospheric state of ozone (O3), and formal uncertainties measured by the AIRS instrument on the EOS Aqua 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 13.5 km (AIRS 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

trpsyl2o3airsfs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSYL2O3AIRSFS",
    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.