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Full catalog/OMAERUVd
OMAERUVd·v003·dataset

Haze and how much it dims sunlight (Aura, daily, 1 degree)

OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo L3 1 day 1.0 degree x 1.0 degree V3 (OMAERUVd) at GES DISC
atmosphere NASA GES_DISC Level 3 active
In plain English

What it measures. Daily global maps of airborne haze: how much aerosol there is and how strongly it absorbs sunlight, given at three wavelengths on a 1-degree grid. It captures both the dimming and the light-absorbing nature of particles like smoke and dust.

How it's made. Built by averaging quality-filtered ultraviolet aerosol measurements from the Ozone Monitoring Instrument on NASA's Aura satellite into daily gridded summaries.

How & where you'd use it. Used to track smoke, dust, and pollution haze around the world and to study how these particles affect sunlight and air quality.

What's measured

ATMOSPHERE › AEROSOLS › AEROSOL EXTINCTION › AEROSOL SINGLE SCATTERING ALBEDOATMOSPHERE › AEROSOLS › AEROSOL OPTICAL DEPTH/THICKNESS › AEROSOL ABSORPTION OPTICAL DEPTHATMOSPHERE › AEROSOLS › AEROSOL OPTICAL DEPTH/THICKNESS › AEROSOL EXTINCTION OPTICAL DEPTHATMOSPHERE › AEROSOLS › AEROSOL OPTICAL DEPTH/THICKNESS › UV AEROSOL INDEX

Coverage & cadence

  • Time span2004-10-01 → ongoing
  • Measured byAura (OMI)
  • Processing levelLevel 3
  • 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

The OMI science team produces this Level-3 daily global gridded product OMAERUVd (1 deg Lat/Lon grids). The OMAERUVd product is produced with all data pixels that fall in a grid box with quality filtered and then averaged, based on the pixel level OMI Level-2 Aerosol data product OMAERUV. The OMAERUV data product is based on the enhanced TOMS version-8 algorithm that essentially uses the ultraviolet radiance data. The OMAERUVd data product contains extinction and absorption optical depths at three wavelenghts (355 nm, 388 nm and 500 nm). The OMAERUVd files are stored in version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits. The maximum file size for the OMAERUVd data product is about 0.2 Mbytes.

Get the data

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

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