Scotto J, Cotton G, Urbach F, Berger D, Fears T
Biostatistics Branch, National Cancer Institute, Bethesda, MD 20892.
Science. 1988 Feb 12;239(4841 Pt 1):762-4. doi: 10.1126/science.3340857.
Recent reports of stratospheric ozone depletion have prompted concerns about the levels of solar ultraviolet radiation that reach the earth's surface. Since 1974 a network of ground-level monitoring stations in the United States has tracked measurements of biologically effective ultraviolet radiation (UVB, 290 to 330 nanometers). The fact that no increases of UVB have been detected at ground levels from 1974 to 1985 suggests that meteorological, climatic, and environmental factors in the troposphere may play a greater role in attenuating UVB radiation than was previously suspected.
最近有关平流层臭氧损耗的报告引发了人们对到达地球表面的太阳紫外线辐射水平的担忧。自1974年以来，美国的一个地面监测站网络一直在跟踪对生物有效紫外线辐射（UVB，290至330纳米）的测量。1974年至1985年期间在地面未检测到UVB增加这一事实表明，对流层中的气象、气候和环境因素在减弱UVB辐射方面可能比之前怀疑的发挥着更大的作用。
