Delivery of new Suomi NPP data ceases on Nov. 2, 2026. Users should transition to alternative products.Suomi NPP data announcement
Migration to Consolidated Ingest and Archive will interrupt data ingestion at PO.DAAC, ASF DAAC, and GES DISC on Oct. 28-30, 2026.Read more
TABLE OF CONTENTS
Description
The OMI science team produces this Level-3 daily global TOMS-Like Total Column Ozone gridded product OMTO3d (1 deg Lat/Lon grids). The OMTO3d product is produced by gridding and averaging only good quality level-2 total column ozone orbital swath data (OMTO3, based on the enhanced TOMS version-8 algorithm) on the 1x1 degree global grids.
The OMTO3d files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits. The maximum file size for the OMTO3d data product is about 0.65 Mbytes.
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.
Schlegel, Robert W., Singh, Rakesh Kumar, Gentili, Bernard, Belanger, Simon, Castro de la Guardia, Laura, Krause-Jensen, Dorte, Miller, Cale A., Sejr, Mikael, Gattuso, Jean-Pierre
SOUZA, ALANNA M. DE, PERES, LUCAS V., BITTENCOURT, GABRIELA D., PINHEIRO, DAMARIS K., LOPES, BIBIANA C., ANABOR, VAGNER, LEME, NEUSA M.P., MARTINS, MARIA PAULETE P., SILVA, RODRIGO DA, REIS, GABRIELA C.G. DOS, REIS, MARCO ANTONIO G. DOS, BAGESTON, JOSE V., BENCHERIF, HASSAN
The table below lists the variables contained within a single granule for this
dataset. Variables often contain observed or derived geophysical measurements
collected from a variety of sources, including remote sensing instruments on
satellite and airborne platforms, field campaigns, in situ measurements, and
model outputs. The terms variable, parameter, scientific data set, layer, and band
have been used across NASA’s Earth science disciplines; however, variable is the
designated nomenclature in NASA’s Common Metadata Repository (CMR).
Variable metadata attributes such as Name, Description, Units, Data Type, Fill
Value, Valid Range, and Scale Factor allow users to efficiently process and analyze
the data. The full range of attributes may not be applicable to all variables.
Additional information on variable attributes is typically available in the data,
user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.