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Full catalog/TRPSYL2O3CRSFS
TRPSYL2O3CRSFS·v1·dataset

Ozone in the air, quick summary (Suomi-NPP)

TROPESS CrIS-SNPP L2 Ozone for Forward Stream, Summary Product V1 (TRPSYL2O3CRSFS) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. A condensed version of ozone profiles, giving how much ozone sits at different heights along with uncertainty, but without the extra diagnostic detail of the full product.

How it's made. Derived from the CrIS instrument on the Suomi-NPP satellite using the TROPESS estimation method, covering early 2021 until that processing was stopped in May 2021.

How & where you'd use it. A lighter, easier-to-handle option for ozone research and model checking when the full diagnostic information is not needed.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › OXYGEN COMPOUNDS › ATMOSPHERIC OZONE

Coverage & cadence

  • Time span2021-02-01 → 2023-05-18
  • Measured bySuomi-NPP (CrIS)
  • Processing levelLevel 2
  • 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

The TROPESS CrIS-SNPP 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 CrIS instrument on the Suomi-NPP satellite. The forward stream standard product is global for the time period from 2021-02-01 to 2021-05-21, when the CrIS-SNPP processing was discontinued. 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 14 km (CrIS 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

trpsyl2o3crsfs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSYL2O3CRSFS",
    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.