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Full catalog/TRPSDL2PANCRSAUS
TRPSDL2PANCRSAUS·v1·dataset

Smog gas PAN from Australian fires (Suomi-NPP)

TROPESS CrIS-SNPP L2 Peroxyacetyl Nitrate for Australian Fires, Standard Product V1 (TRPSDL2PANCRSAUS) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. How much peroxyacetyl nitrate (PAN, a smog-related gas tied to pollution and smoke) is in the atmosphere and how it's layered by height, with uncertainty and diagnostics, focused on Australia during the 2019-2020 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 Nov 2019 through Jan 2020.

How & where you'd use it. Helps researchers see how wildfire smoke spreads pollution and forms harmful gases far downwind of the fires.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › NITROGEN COMPOUNDS › PEROXYACETYL NITRATE

Coverage & cadence

  • Time span2019-11-01 → 2020-01-31
  • Measured bySuomi-NPP (CrIS)
  • Processing levelLevel 2
  • Spatial extent100, -60, 177.5, 0
  • 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 Australian Fires, 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 Australia region (60S-0S; 100E-177.5E) for the time period from 2019-11-01 to 2020-01-31, during the outbreak of Austrailan 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

trpsdl2pancrsaus_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSDL2PANCRSAUS",
    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.