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Science Objectives of EOS-Aura's Ozone Monitoring Instrument (OMI)OMI is a UV/VIS nadir solar backscatter spectrograph, which provides near global coverage in one day with a spatial resolution of 13 x 24 sq km. OMI is a new instrument, with a heritage from the European satellite instruments GOME, GOMOS and SCIAMACHY. OMI's unique capabilities for measuring important trace gases with a small footprint and daily global coverage, in conjunction with the other Aura instruments, will make a major contribution to our understanding of stratospheric and tropospheric chemistry and climate change. OMI will measure solar irradiance and Earth radiances in the wavelength range of 270 to 500 nm with spectral resolution of about 0.5 nm and a spectral sampling of about 2-3 per FWHM. From these observations, total columns of O3, NO2, BrO and SO2 will be derived from the back-scattered solar radiance using differential absorption spectroscopy (DOAS). The TOMS total ozone record will also be continued by employing the well established TOMS algorithm. Because of the high accuracy and spatial resolution of the measurements, a good estimate of tropospheric amounts of ozone and NO2 are expected. Ozone profiles will be derived using the optimal estimation method. The spectral aerosol optical depth will be determined from measurements between 340 and 500 nm. This will provide information on aerosol concentration, aerosol size distribution and aerosol type. This wavelength range makes it possible to retrieve aerosol information over both land and sea. OMI observations will also allow retrievals of cloud coverage and cloud heights. From these products, the UV-B flux at the surface can then be derived with high spatial resolution.
Document ID
20020083310
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Levelt, P. F.
(Royal Netherlands Meteorological Inst. De Bilt, Netherlands)
Veefkind, J. P.
(Royal Netherlands Meteorological Inst. De Bilt, Netherlands)
Stammes, P.
(Royal Netherlands Meteorological Inst. De Bilt, Netherlands)
Hilsenrath, E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bhartia, P. K.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Chance, K. V.
(Smithsonian Astrophysical Observatory Cambridge, MA United States)
Leppelmeier, G. W.
(Finnish Meteorological Inst. Helsinki, Finland)
Maelkki, A.
(Finnish Meteorological Inst. Helsinki, Finland)
Bhartia, Pawan
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Environment Pollution
Meeting Information
Meeting: International Geoscience and Remote Sensing Symposium (IGARSS 2002)
Location: Toronto
Country: Canada
Start Date: June 24, 2002
End Date: June 28, 2002
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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