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Full catalog/TRPSYL2COCRS1FS
TRPSYL2COCRS1FS·v1·dataset

Carbon monoxide in the air (NOAA-20, summary)

TROPESS CrIS-JPSS1 L2 Carbon Monoxide for Forward Stream, Summary Product V1 (TRPSYL2COCRS1FS) at GES DISC
atmosphere NASA GES_DISC Level 2 active
In plain English

What it measures. How much carbon monoxide is in the air and how it's distributed at different heights from the surface up to the very top of the atmosphere, plus error estimates for each reading.

How it's made. Derived from the CrIS instrument on the NOAA-20 (JPSS-1) satellite, processed by NASA's TROPESS project using a method that pulls the gas concentrations out of the raw measurements.

How & where you'd use it. Carbon monoxide tracks pollution, wildfire smoke, and how air mixes and moves, so this helps with air-quality studies and tracing pollution sources.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › CARBON AND HYDROCARBON COMPOUNDS › ATMOSPHERIC CARBON MONOXIDE

Coverage & cadence

  • Time span2021-02-01 → ongoing
  • Measured byJPSS-1 (CrIS)
  • 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 CrIS-JPSS1 L2 Carbon Monoxide for Forward Stream, Summary Product contains the vertical distribution of the retrieved atmospheric state of carbon monoxide (CO), and formal uncertainties measured by the CrIS instrument on the JPSS-1 (NOAA-20) satellite. The forward stream standard product is global for the time period from 2021-04-01 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 14 km (CrIS nadir FOV), and are reported at 14 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsyl2cocrs1fs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSYL2COCRS1FS",
    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.