GES Distributed Active Archive Center
OMI On-line Data Access
The Ozone Monitoring Instrument (OMI) employs hyperspectral imaging in a push-broom fashion to observe solar backscatter radiation in the ultraviolet (UV1: 264 - 311 nm; UV2: 307 - 383 nm) and visible (349 - 504 nm). These measurements are used to derive column amounts of O3 (total and troposphere), BrO, NO2, HCHO, OClO, and SO2, as well as ozone profiles. OMI will also measure cloud layer pressure, aerosols (absorption and total optical depth and single scattering albedo), and UV-B fluxes. Spatial coverage is global (~15 orbits per day), with a 2600 km orbit swath width in the global viewing mode, and 750 km swath width in the zoom-in mode. Spatial resolution at nadir is 13 x 24 km for nominal observations, and 13 x 12 km for zoomed observations.
The data are grouped by Processing Level, and the link in the "Level" column below will take you to a page listing available data products.
| Product Level | Description | Begin Date | End Date | Number of Items |
|---|---|---|---|---|
| L1B_V003 | Level 1B calibrated UV (264 - 383 nm) and visible (349 - 504 nm) radiance data products at full temporal resolution for a single orbit archived in the old HDF-EOS (swath model) file format | 2004-08-09 18:23:43 | 2009-05-11 13:35:37 | 52755 |
| L2_V003 | Level 2 geolocated geophysical parameter (O3, NO2, SO2, BrO, HCHO, OClO, Aerosol, and Cloud) data products at full instrument resolution, one orbit per file, archived in the new HDF-EOS5 (swath model) file format. SPATIAL and/or PARAMETER SUBSETTING is available. | 2004-08-17 09:19:09 | 2009-05-11 13:35:37 | 287435 |
| L2G_V003 | Level 2G geolocated geophysical parameter (O3, NO2, SO2, BrO, HCHO, OClO, Aerosol, and Cloud) data products containing an entire day of L2 data binned to a global 0.25° x 0.25° grid, archived in the HDF-EOS5 (grid model) file format. SPATIAL and/or PARAMETER SUBSETTING is available. | 2004-08-20 00:00:00 | 2009-05-10 23:59:59 | 14986 |
| L3_V003 | Level 3 global gridded data products. Available in both HDF and NetCDF formats. | 2004-08-21 00:00:00 | 2009-05-09 23:59:59 | 8306 |
Documentation and software for the various OMI data products are available. Additionally, we maintain a list of links to sites outside the GES DAAC related to atmospheric chemistry.
Aura HIRDLS and MLS data products are available from the GES DISC. Data from the Nimbus-7 and EP TOMS instruments (Nov. 1978 - Dec. 1994 and July 1996 - Dec. 2005) are also available.
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Responsible NASA Official: Steve Kempler
Web Curator: Anthony Drake |
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