EVIDENCE FOR LARGE UPWARD TRENDS OF ULTRAVIOLET-B RADIATION LINKED TO OZONE DEPLETION

被引：810
|
作者：
KERR, JB
MCELROY, CT
机构：
[1] Environment Canada, Atmospheric Environment Service, Downsview, M3H5T4
来源：
SCIENCE | 1993年 / 262卷 / 5136期
关键词：
D O I：
10.1126/science.262.5136.1032
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Spectral measurements of ultraviolet-B radiation made at Toronto since 1989 indicate that the intensity of light at wavelengths near 300 nanometers has increased by 35 percent per year in winter and 7 percent per year in summer. The wavelength dependence of these trends indicates that the increase is caused by the downward trend in total ozone that was measured at Toronto during the same period. The trend at wavelengths between 320 and 325 nanometers is essentially zero.
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页码：1032 / 1034
页数：3
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