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Full catalog/TRPSDL2HDOCRSAUS
TRPSDL2HDOCRSAUS·v1·dataset

Heavy-water vapor over Australian wildfires

TROPESS CrIS-SNPP L2 Deuterated Water Vapor for Australian Fires, Standard Product V1 (TRPSDL2HDOCRSAUS) at GES DISC
atmosphere NASA GES_DISC Level 2
In plain English

What it measures. Tracks a heavier form of water vapor (semi-heavy water, HDO) and how its amount changes with height, focused on Australia during the late-2019 to early-2020 wildfire outbreak.

How it's made. Derived from the CrIS infrared instrument on Suomi-NPP, with the readings turned into real amounts by the MUSES estimation model.

How & where you'd use it. Used by researchers to study how water moves and cycles through the atmosphere during major fires, since this heavy-water form carries clues about where moisture came from.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › HYDROGEN COMPOUNDS › HYDROGEN-DEUTERIUM OXIDE

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 Deuterated Water Vapor for Australian Fires, Standard Product contains the vertical distribution of the retrieved atmospheric state of semi-heavy water (HDO), 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 17 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.

Get the data

trpsdl2hdocrsaus_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TRPSDL2HDOCRSAUS",
    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.