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Measuring Aerosol Optical Properties with the Ozone Monitoring Instrument (OMI)The Ozone Monitoring Instrument (OMI) is the Dutch-Finnish contribution to the NASA EOS-Aura mission scheduled for launch in January 2004. OM1 is an imaging spectrometer that will measure the back-scattered Solar radiance between 270 an 500 nm. With its relatively high spatial resolution (13x24 sq km at nadir) and daily global coverage. OM1 will make a major contribution to our understanding of atmospheric chemistry and to climate research. OM1 will provide data continuity with the TOMS instruments. One of the pleasant surprises of the TOMS data record was its information on aerosol properties. First, only the absorbing aerosol index, which is sensitive to elevated lay- ers of aerosols such as desert dust and smoke aerosols, was derived. Recently these methods were further improved to yield aerosol optical thickness and single scattering albedo over land and ocean for 19 years of TOMS data (1979-1992,1997-2002), making it one of the longest and most valuable time series for aerosols presently available. Such long time series are essential to quantify the effect of aerosols on the Earth& climate. The OM1 instrument is better suited to measure aerosols than the TOMS instruments because of the smaller footprint, and better spectral coverage. The better capabilities of OMI will enable us to provide an improved aerosol product, but the knowledge will also be used for further analysis of the aerosol record from TOMS. The OM1 aerosol product that is currently being developed for OM1 combines the TOMS experience and the multi-spectral techniques that are used in the visible and near infrared. The challenge for this new product is to provide aerosol optical thickness and single scattering albedo from the near ultraviolet to the visible (330-500 nm) over land and ocean. In this presentation the methods for deriving the OM1 aerosol product will be presented. Part of these methods developed for OM1 can already be applied to TOMS data and results of such analysis will be shown.
Document ID
20030112095
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Veefkind, J. P.
(Royal Netherlands Meteorological Inst. De Bilt, Netherlands)
Torres, O.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Syniuk, A.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Decae, R.
(Physics and Electronics Lab. TNO The Hague, Netherlands)
deLeeuw, G.
(Physics and Electronics Lab. TNO The Hague, Netherlands)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: EGS-AGU-EUG Joint Assembly 2003
Location: Nice
Country: France
Start Date: April 7, 2003
End Date: April 11, 2003
Sponsors: European Union of Geosciences, American Geophysical Union, European Geophysical Society
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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