Weather conditions paired with ozone readings (Aura)
What it measures. Bundles weather and atmospheric background conditions, such as surface pressure, temperature at different heights, winds, and the height of the tropopause, matched in space and time to ozone-instrument observations.
How it's made. Produced by taking NASA's GEOS-5 weather model output and lining it up with the OMI instrument's path on the Aura satellite, then trimming the file size for convenience.
How & where you'd use it. A building-block input designed mainly for the OMI team's own processing and for researchers using those products, rather than something most people would open on its own.
What's measured
Coverage & cadence
- Time span2004-10-01 → ongoing
- Measured byAura (OMI) · GEOS-5 (NOT APPLICABLE)
- Processing levelLevel 2
- 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 GEOS-5 FP-IT Assimilation Geo-colocated to OMI/Aura UV-2 1-Orbit L2 Support Swath 13x24km (OMUFPITMET) provides selected parameters from GEOS-5 Forward Processing for Instrument Teams (FP-IT) assimilated product produced by the Global Modeling and Assimilation Office (GMAO) co-located in space and time with the OMI UV-2 swath. The fields in this product include surface pressure, vertical temperature profiles, surface and vertical wind profiles, tropopause pressure, boundary layer top pressure, and surface geopotenial. The OMI team also provides a corresponding product for the OMI VIS swath, OMVFPITMET. The product has been generated for convenient use by the OMI/Aura team in their L2 algorithms, and for research where those L2 products are used. The original GEOS-5 FP-IT data are reported on a 0.625 deg longitude by 0.5 deg latitude grid, whereas the OMI UV-2 spatial resolution is 13km x 24km at nadir. To reduce the size of each orbital file, FP-IT data fields with a vertical dimension of 72 layers have been reduced to 47 layers in OMUFPITMET by combining layers above the troposphere. The OMUFPITMET files are in netCDF4 format which is compatible with most HDF5 readers and tools. Each file is approximately 45mb in size. The lead for this product is Zachary Fasnacht of SSAI. Joanna Joiner is the responsible NASA official.
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="OMUFPITMET",
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. Official links
- Access the data via HTTPS. GET DATA
- Use the Earthdata Search to find and retrieve data sets across multiple data centers. GET DATA
- Access the data via the OPeNDAP protocol. USE SERVICE API
- OMI Algorithm Theoretical Basis Documents VIEW RELATED INFORMATION
- Product README VIEW RELATED INFORMATION
- OMI Data User's Guide VIEW RELATED INFORMATION
- File Specification Document VIEW RELATED INFORMATION
- List of Publications VIEW RELATED INFORMATION