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Full catalog/AV3_L2B_GHG_2358
AV3_L2B_GHG_2358·v1·dataset

Extra greenhouse gas plumes spotted from aircraft

AVIRIS-3 L2B Greenhouse Gas Enhancements, Facility Instrument Collection
atmosphere NASA ORNL_CLOUD Level 2 active multiple
In plain English

What it measures. Maps of extra greenhouse gas - methane and carbon dioxide plumes - spotted from the air, showing where concentrations rise above the background. Each reading comes with its own uncertainty estimate.

How it's made. Derived from an aircraft-mounted imaging spectrometer (AVIRIS-3) that measures reflected light across many wavelengths, using a method that searches each pixel for the telltale fingerprint of methane and CO2 absorption.

How & where you'd use it. Useful for pinpointing greenhouse gas leaks and emission sources, such as from facilities or infrastructure, that can then be investigated or fixed.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › CARBON AND HYDROCARBON COMPOUNDSATMOSPHERE › ATMOSPHERIC CHEMISTRY › CARBON AND HYDROCARBON COMPOUNDS › METHANEHUMAN DIMENSIONS › ENVIRONMENTAL IMPACTS › INDUSTRIAL EMISSIONS

Coverage & cadence

  • Time span2023-07-05 → ongoing
  • Measured byG-III (AVIRIS-3) · G-V (AVIRIS-3) · NASA ER-2 (AVIRIS-3) · B-200 (AVIRIS-3)
  • Processing levelLevel 2
  • Spatial extent-178.68, 16.5, -66.18, 72.6
  • Formatsmultiple
  • StatusACTIVE

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

This dataset contains Level 2B (L2b) enhancements of greenhouse gasses (GHG) derived from imagery collected by the Airborne Visible / Infrared Imaging Spectrometer-3 (AVIRIS-3) instrument. Products include methane and carbon dioxide enhancements, each with per-pixel uncertainties and sensitivities to the background. Concentration enhancements are estimated from radiance measurements using a column-wise adaptive matched filter approach, which searches each pixel's radiance spectrum for deviations that are characteristic of a GHG's absorption spectrum. This is the NASA Earth Observing System Data and Information System (EOSDIS) facility instrument archive of these data. The NASA AVIRIS-3 is a spectral mapping system that measures reflected radiance at 7.4-nm intervals in the Visible to Shortwave Infrared (VSWIR) spectral range from 390-2500 nm.

Get the data

av3_l2b_ghg_2358_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="AV3_L2B_GHG_2358",
    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 ORNL_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.