McKenzie R L, Elwood J M
Hugh Adam Cancer Epidemiology Unit, Otago University Medical School, Dunedin.
N Z Med J. 1990 Apr 11;103(887):152-4.
The intensity of solar ultraviolet radiation (wavelength 307 nm) at ground level has been calculated using satellite measurements of atmospheric ozone. Ultraviolet levels in New Zealand are about 13% higher than those at similar latitudes in the northern hemisphere. Because of the clear atmosphere, peak daily summer irradiances may be only 50% less than those in tropical regions. From 35 degrees south (Auckland) to 45 degrees (Lauder, Central Otago), ultraviolet levels decrease by 5-10%. Peak ultraviolet irradiance in summer occurs at around 1330 local time. Over the last 10 years, calculated ultraviolet levels at Lauder have increased significantly, due to decreases in atmospheric ozone. These results are relevant to the high rates of skin cancer in New Zealand, and have implications for educational programmes relating to sun behavior and for future monitoring activities.
利用卫星对大气臭氧的测量数据，计算出了地面太阳紫外线辐射（波长307纳米）的强度。新西兰的紫外线水平比北半球相同纬度地区约高13%。由于大气清澈，夏季每日峰值辐照度可能仅比热带地区低50%。从南纬35度（奥克兰）到45度（中奥塔哥地区的劳德），紫外线水平下降了5%至10%。夏季紫外线辐照度峰值出现在当地时间13:30左右。在过去10年里，由于大气臭氧减少，劳德地区计算出的紫外线水平显著上升。这些结果与新西兰皮肤癌的高发病率相关，对有关防晒行为的教育项目以及未来的监测活动具有启示意义。
