NDLI: Trends in ultraviolet radiation at the Earth's land surfaces determined from two decades of satellite-based Total Ozone Mapping Spectrometer (TOMS) observations

Content Provider	IEEE Xplore Digital Library
Author	Middleton, E.M. Herman, J.R. Celarier, E.A. Rusin, R.J.
Copyright Year	1999
Description	Author affiliation: Lab. for Terrestrial Phys., NASA Goddard Space Flight Center, Greenbelt, MD, USA (Middleton, E.M.)
Abstract	Understanding the impact of increasing ultraviolet (ITV) radiation on terrestrial systems is an important global change issue. The authors used satellite data to examine the UV received at a sampled subset of pixels over land surfaces of Earth's major continental areas. Spectral observations of the radiation reflected from the Earth-atmosphere system were acquired daily for most of the Earth (65/spl deg/N65/spl deg/S) at a scale appropriate for global studies (1/spl deg/ latitude X 1.25/spl deg/ longitude) with the Total Ozone Mapping Spectrometer (TOMS) aboard the Nimbus-7 (1979-1994) and Earth Probe (1996-1998) satellites. These data were used to calculate the ultraviolet (UV) radiation received at the Earth's surface, expressed as the average monthly erythemal (sunburning) mid-day UV dose (kJ m/sup -2/), for sample subsets. The daily erythemal surface UV values were computed for a horizontal surface at the average local terrain altitude per pixel from the narrow band TOMS reflectance spectra, and account for solar geometry, total column ozone, and atmospheric transmissivity. The seasonal and annual UV values were examined over the 1979-1998 time period for regions in North America, Central America, South America, Europe, Asia, Africa, and Australia.
Starting Page	2296
Ending Page	2299
File Size	373838
Page Count	4
File Format	PDF
ISBN	0780352076
DOI	10.1109/IGARSS.1999.775107
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-06-28
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Earth Land surface Satellites Spectroscopy Probes Narrowband Reflectivity Computational geometry North America South America
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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