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Full catalog/OMPIXCOR
OMPIXCOR·v003·dataset

Map of where each pixel's corners sit (OMI)

OMI/Aura Global Ground Pixel Corners 1-Orbit L2 Swath 13x24km V003 (OMPIXCOR) at GES DISC
land NASA GES_DISC Level 2 active
In plain English

What it measures. The precise ground locations of the four corners of each pixel the OMI instrument observes — essentially the exact footprint each measurement covers on Earth's surface.

How it's made. Generated for the Ozone Monitoring Instrument on NASA's Aura satellite, covering the sunlit part of each orbit.

How & where you'd use it. A helper product for accurately drawing OMI data on maps, calculating emissions per area, and lining OMI up with other satellites — used by data specialists rather than the general public.

What's measured

SPECTRAL/ENGINEERING › SENSOR CHARACTERISTICS › VIEWING GEOMETRY

Coverage & cadence

  • Time span2004-10-01 → ongoing
  • Measured byAura (OMI)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • StatusACTIVE

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

The Version-3 Aura Ozone Monitoring Instrument (OMI) Pixel Corner Product, OMPIXCOR, is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for public access. The shortname for this Level-2 OMI product is OMPIXCOR. The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCOR product contains ground locations of the OMI pixel corners in the global scanning mode. The motivation for the development of the OMI ground pixel corner products was the common need for: the visualization of derived OMI data products, the provision of ground pixel area for computations of trace gas emissions per area, the facilitation of the development of cross-platform pixel mapping applications (e.g., between OMI and MODIS), and to generally aid validation studies, to name just a few. The OMPIXCOR files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) . There are approximately 14 orbits per day. The average file size for the OMPIXCOR data product is about 5 Mbytes.

Get the data

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

results = earthaccess.search_data(
    short_name="OMPIXCOR",
    version="003",
    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.