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Full catalog/OCO2_L2_IMAPDOAS
OCO2_L2_IMAPDOAS·v11.2r·dataset

Carbon dioxide retrieval, pre-screened soundings (OCO-2)

OCO-2 Level 2 spatially ordered geolocated retrievals screened using the IMAP-DOAS Preprocessor (IDP) Retrospective Processing V11.2r (OCO2_L2_IMAPDOAS) at GES DISC
atmosphere NASA GES_DISC Level 2 active
In plain English

What it measures. Carbon dioxide measurements from reflected sunlight, with a pre-screening step that uses a separate method to flag soundings and also pull out solar-induced fluorescence (the faint glow plants give off).

How it's made. Produced by the OCO-2 satellite's three high-resolution spectrometers, with this product being the output of an early 'preprocessor' that screens data and feeds the main carbon dioxide retrieval.

How & where you'd use it. A processing-stage product that supports OCO-2's official CO2 measurements and provides a plant-fluorescence signal; researchers use it as an input rather than a finished map.

What's measured

ATMOSPHERE › ATMOSPHERIC CHEMISTRY › CARBON AND HYDROCARBON COMPOUNDS › ATMOSPHERIC CARBON DIOXIDE

Coverage & cadence

  • Time span2019-11-30 → ongoing
  • Measured byOCO-2 (OCO-2)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • 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

Version 11.2r is the current version of the data set. Older versions will no longer be available and are superseded by Version 11.2r. The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and in molecular oxygen (O2) A-Band at 0.76 micrometers. This collection encompass the output from the IMAP-DOAS preprocessor, which is used for both screening of the official XCO2 product as well as for the retrieval of Solar-Induced Fluorescence from the 0.76 micrometer O2 A-band. The IMAP-DOAS preprocessor, just as the ABO2 cloud screen, is implemented in the operational OCO-2 processing pipeline.

Get the data

oco2_l2_imapdoas_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="OCO2_L2_IMAPDOAS",
    version="11.2r",
    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.