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Full catalog/OMAERUVG
OMAERUVG·v003·dataset

Haze, dust and smoke in the air, daily map (OMI/Aura, 0.25 deg)

OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo Daily L2 Global Gridded 0.25 degree x 0.25 degree V3 (OMAERUVG) at GES DISC
atmosphere NASA GES_DISC Level 2G active
In plain English

What it measures. Daily maps of airborne particles like haze, dust, and smoke, summarized as how much they dim and absorb light. Unlike averaged products, it keeps every individual measurement that falls in each grid cell without combining them.

How it's made. Built from the OMI instrument on NASA's Aura satellite by binning its pixel-level aerosol data into 0.25-degree global grid cells, with all data kept so users can apply their own filtering.

How & where you'd use it. Useful for researchers who want to track haze, dust, and smoke while applying their own quality filters and creating custom aerosol maps.

What's measured

ATMOSPHERE › AEROSOLS › AEROSOL EXTINCTION › AEROSOL SINGLE-SCATTERING ALBEDOATMOSPHERE › AEROSOLS › AEROSOL OPTICAL DEPTH/THICKNESS

Coverage & cadence

  • Time span2004-10-01 → ongoing
  • Measured byAura (OMI)
  • Processing levelLevel 2G
  • 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

This Level-2G daily global gridded product OMAERUVG is based on the pixel level OMI Level-2 AERUV product OMAERUV. This Level-2G daily global gridded product OMAERUVG is based on the pixel level OMI Level-2 Aerosol product OMAERUV. OMAERUVG data product is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time between UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved without averaging. Scientists can apply a data filtering scheme of their choice and create new gridded products. The OMAERUVG files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits mapped on the Global 0.25x0.25 deg Grids. The maximum file size for the OMAERUVG data product is about 50 Mbytes.

Get the data

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

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