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Full catalog/OCO2_Eph
OCO2_Eph·v11r·dataset

Where the OCO-2 satellite was in orbit (reprocessed)

OCO-2 Level 0 spacecraft ephemerides, Retrospective Processing V11r (OCO2_Eph) at GES DISC
land NASA GES_DISC Level 0
In plain English

What it measures. Where the OCO-2 satellite was located in space during each orbit, given as its position and velocity.

How it's made. Generated from the satellite's telemetry as a Level 0 (earliest stage) product, in this reprocessed version that draws on the full mission's calibration for slightly better quality.

How & where you'd use it. A behind-the-scenes input rather than a science result: it is essential for figuring out exactly where on Earth the satellite's carbon-dioxide measurements were taken.

What's measured

SPECTRAL/ENGINEERING › PLATFORM CHARACTERISTICS › ORBITAL CHARACTERISTICS

Coverage & cadence

  • Time span2014-07-02 → 2022-03-01
  • Measured byOCO-2 (OCO-2)
  • Processing levelLevel 0
  • Spatial extent-180, -90, 180, 90
  • StatusCOMPLETE

What you can do with it

  • Track deforestation, fire scars and land-cover change
  • Monitor crop and vegetation health (NDVI/EVI)
  • Map how built-up vs. green an area is over time
Official description

Version 11r is the current version of the data set. Older versions will no longer be available and are superseded by Version 11r. 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 . Each band has 1016 spectral elements.This product contains the position and velocity of the spacecraft for each orbit. It is generated using the following input data:+ APID 20 telemetry+ Orbit Boundary File.It is essential in generating the Geolocations of the science data.This is the retrospective processing where the calibration data is estimated from the full timeseries of data (before, during, and after the measurements), and is expected to be of slightly higher quality.

Get the data

oco2_eph_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="OCO2_Eph",
    version="11r",
    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.