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Full catalog/OMPIXCORZ
OMPIXCORZ·v003·dataset

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

OMI/Aura Zoom-in Ground Pixel Corners 1-Orbit L2 Swath 13x12km V003 (OMPIXCORZ) at GES DISC
land NASA GES_DISC Level 2
In plain English

What it measures. The exact ground locations of the four corners of each measurement pixel when the OMI instrument was in its zoomed-in, finer-resolution mode. It's geometry, not a science measurement.

How it's made. Generated from the OMI instrument on NASA's Aura satellite as a Level-2 product, recording pixel-corner positions for the daylit part of each orbit.

How & where you'd use it. A behind-the-scenes building block used to draw OMI data on maps accurately, calculate per-area emission amounts, match OMI pixels with other satellites, and support validation work.

What's measured

SPECTRAL/ENGINEERING › SENSOR CHARACTERISTICS › VIEWING GEOMETRY

Coverage & cadence

  • Time span2004-10-06 → 2019-11-12
  • Measured byAura (OMI)
  • Processing levelLevel 2
  • 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

The Version-3 Aura Ozone Monitoring Instrument (OMI) Pixel Corner Product in zoom-in mode, OMPIXCORZ, 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 OMPIXCORZ. The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCORZ product contains ground locations of the OMI pixel corners in the zoom-in 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 OMPIXCORZ 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 approximately one day per month. The average file size for the OMPIXCORZ data product is about 8 Mbytes.

Get the data

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

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