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Full catalog/TRPSDL2PANCRSWCFHI
TRPSDL2PANCRSWCFHI·v1·dataset

Smog gas PAN from West Coast fires, high-res (Suomi-NPP)

TROPESS CrIS-SNPP L2 Peroxyacetyl Nitrate for West Coast Fires HiRes, Standard Product V1 (TRPSDL2PANCRSWCFHI) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. How much peroxyacetyl nitrate (PAN, a smog-related gas formed in polluted and smoky air) is in the atmosphere and how it's layered by height, with uncertainty and diagnostics. This higher-resolution product focuses on the continental U.S. during the 2020 West Coast wildfires.

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 files for Aug through Oct 2020.

How & where you'd use it. Helps researchers track how wildfire smoke spreads pollution and forms harmful gases far from the fires themselves.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › NITROGEN COMPOUNDS › PEROXYACETYL NITRATE

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 Peroxyacetyl Nitrate for West Coast Fires HiRes, Standard Product contains the vertical distribution of the retrieved atmospheric state of peroxyacetyl nitrate (PAN), 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 16 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsdl2pancrswcfhi_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSDL2PANCRSWCFHI",
    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.