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Full catalog/TRPSDL2NH3CRSWCF
TRPSDL2NH3CRSWCF·v1·dataset

Ammonia from West Coast wildfire smoke (Suomi-NPP)

TROPESS CrIS-SNPP L2 Ammonia for West Coast Fires, Standard Product V1 (TRPSDL2NH3CRSWCF) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. Shows the vertical distribution of ammonia gas in the air, along with how uncertain each reading is — focused on the 2020 U.S. West Coast wildfire season over North America.

How it's made. Retrieved from the CrIS instrument on the Suomi-NPP satellite using an optimal-estimation method that reconstructs the gas profile from the raw signal.

How & where you'd use it. Useful for studying ammonia released by wildfire smoke and its role in air pollution during that intense fire outbreak.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › NITROGEN COMPOUNDS › AMMONIA

Coverage & cadence

  • Time span2020-08-02 → 2020-10-26
  • Measured bySuomi-NPP (CrIS)
  • Processing levelLevel 2
  • Spatial extent-150, 20, -40, 60
  • 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 Ammonia for West Coast Fires, Standard Product contains the vertical distribution of the retrieved atmospheric state of ammonia (NH3), formal uncertainties, and diagnostic information measured by the CrIS instrument on the Suomi-NPP satellite. This product focuses on the CONUS region (20N-60N; 150W-40W) for the time period from 2020-08-01 to 2020-10-31, during the outbreak of U.S. West Coast wildfires. 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 15 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsdl2nh3crswcf_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSDL2NH3CRSWCF",
    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.