OMI/Aura Cloud Pressure and Fraction (O2-O2 Absorption) Zoomed 1-Orbit L2 Swath 13x12km V003 (OMCLDO2Z) at GES DISCEntry ID: GES_DISC_OMCLDO2Z_V003
Abstract: The reprocessed OMI/Aura Level-2 zoomed cloud data product OMCLDO2Z at 13x12 km resolution is now available ( http://disc.gsfc.nasa.gov/Aura/OMI/omcldo2z_v003.shtml ) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. It is the second release of Version 003 and was reprocessed late 2011.
OMI provides two cloud products based on two different ... algorithms, the Rotational Raman Scattering method and O2-O2 absorption method using the DOAS technique. This level-2 zoomed cloud product at the pixel resolution (13x12 km2 at nadir) is based on the spectral fitting of O2-O2 absorption band at 477 nm using DOAS technique. This product contains effective cloud pressure, effective cloud fraction, slant column O2-O2; uncertainties in derived, parameters, terrain and geolocation information, solar and satellite viewing angles, and quality flags.
The shortname for this Level-2 OMI cloud product is OMCLDO2Z and the lead scientist for this product is Dr. Pepijn Veefkind.
OMCLDO2Z files are stored in Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) and is roughly 20 MB in size. OMCLDO2Z data files are based on Zoomed Level 1B radiance observations which are made once a month. Thus there is one zoomed cloud product per month.
A list of tools for browsing and extracting data from these files can be found at: http://disc.gsfc.nasa.gov/Aura/tools.shtml
A Readme document containing brief algorithm description and known data quality related issues and file spec are provided by the OMCLDO2 Algorithm lead (see documents available from OMI product site
The Ozone Monitoring Instrument (OMI) launched on NASA Aura satellite in July 2004, has been providing daily global measurements of clouds, atmospheric pollutants (Ozone, Nitrogen dioxide, Sulfur-dioxide, HCHO and Aerosols from biomass burning and industrial emissions) , BrO and OClO for tracking ozone depletion and surface UV irradiance. OMI is a contribution of the Netherlands Space Office (NSO) in collaboration with Finish Meteorological Institute (FMI), to the US EOS-Aura Mission. The principal investigator's (Dr. Pieternel Levelt) institute is the KNMI (Royal Netherlands Meteorological Institute).
For more information on Ozone Monitoring Instrument and atmospheric data products, please visit the OMI-Aura sites:
http://aura.gsfc.nasa.gov/ and http://www.knmi.nl/omi/research/documents/
For the full set of Aura products available from the GES DISC, please visit: http://disc.sci.gsfc.nasa.gov/Aura/index.shtml
Atmospheric Composition data from Aura and other satellite sensors can be ordered from the following sites:
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: OMI Science Team
Dataset Title: OMI/Aura Cloud Pressure and Fraction (O2-O2 Absorption) Zoomed 1-Orbit L2 Swath 13x12km
Dataset Series Name: OMCLDO2Z
Dataset Release Date: 2012
Dataset Release Place: NASA Goddard Space Flight Center
Data Presentation Form: Digital Science DataOnline Resource: http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/additional/documen...
Start Date: 2004-10-01
Latitude Resolution: 13 km
Longitude Resolution: 12 km
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Vertical Resolution: Approx 80 km (atmospheric column)
Vertical Resolution Range: Vertical Resolution Ranges
Temporal Resolution: Approx 1 hour (day time orbit)
Temporal Resolution Range: Hourly - < Daily
ISO Topic Category
Quality This is the second public release of version 003. It is based on improved algorithm. Before using it in any publication please see quality documents available from
Access Constraints There are no access constrain. User is requested to read the data quality documents available from
Use Constraints This Data set is the second public release of version 003, it is better than the earlier version but it is not fully validated yet. Before using it in any publication please see documents below for the current known problems and updates
Data Set Progress
Distribution Media: CD-ROM
Distribution Format: ASCII, binary
Email: Jay.Zwally at nasa.gov
Laboratory for Hydrospheric Processes NASA/Goddard Space Flight Center Code 614
Province or State: MD
Postal Code: 20771
Email: anita.brenner at gsfc.nasa.gov
Laboratory for Hydrospheric Processes NASA/Goddard Space Flight Center Code 614.5
Province or State: MD
Postal Code: 20771
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
National Snow and Ice Data Center. 1985-1986. Users' Manual on the Ice Altimetry System CD-ROM. NSIDC Distributed Active Archive Center, University of Colorado at Boulder. Seasat and GEOSAT Ice Altimetry Data. Digital data available from firstname.lastname@example.org. Boulder, Colorado. Zwally, H. J., A. C. Brenner, J. A. Major, T. V. Martin, and R. A. Bindschadler. 1990. Satellite radar altimetry over ice. Processing and corrections of Seasat data over Greenland. NASA Reference Publication 1: 1233. Zwally, H. Jay, Judy A. Major, Anita C. Brenner, and Robert A. Bindschadler. 1987. Ice measurements by GEOSAT radar altimetry. Johns Hopkins APL Technical Digest. 8:2:251-254.
Creation and Review Dates
Last DIF Revision Date: 2011-08-01