Earth Data School
About
Full catalog/TRPSYL2COCRSFS
TRPSYL2COCRSFS·v1·dataset

Carbon monoxide in the air, summary (Suomi-NPP)

TROPESS CrIS-SNPP L2 Carbon Monoxide for Forward Stream, Summary Product V1 (TRPSYL2COCRSFS) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. How much carbon monoxide is in the air and how it is distributed from the ground up through the atmosphere, with uncertainty estimates included. This is the trimmed-down 'summary' version of the data.

How it's made. Derived from the CrIS infrared sounder on the Suomi-NPP satellite, processed by the TROPESS project's optimal-estimation method into daily global files (this stream ran Feb to May 2021 before processing was discontinued).

How & where you'd use it. Helps track pollution and wildfire smoke, since carbon monoxide is a marker of incomplete burning, and supports air-quality and atmospheric chemistry studies.

What's measured

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

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 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 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 14 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsyl2cocrsfs_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSYL2COCRSFS",
    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.