2020年异常严重的臭氧损耗导致北极太阳紫外线辐射破纪录增加。
Record-Breaking Increases in Arctic Solar Ultraviolet Radiation Caused by Exceptionally Large Ozone Depletion in 2020.
作者信息
Bernhard Germar H, Fioletov Vitali E, Grooß Jens-Uwe, Ialongo Iolanda, Johnsen Bjørn, Lakkala Kaisa, Manney Gloria L, Müller Rolf, Svendby Tove
机构信息
Biospherical Instruments Inc. San Diego CA USA.
Environment and Climate Change Canada Toronto Ontario Canada.
出版信息
Geophys Res Lett. 2020 Dec 28;47(24):e2020GL090844. doi: 10.1029/2020GL090844. Epub 2020 Dec 10.
Measurements of solar ultraviolet radiation (UVR) performed between January and June 2020 at 10 Arctic and subarctic locations are compared with historical observations. Differences between 2020 and prior years are also assessed with total ozone column and UVR data from satellites. Erythemal (sunburning) UVR is quantified with the UV Index (UVI) derived from these measurements. UVI data show unprecedently large anomalies, occurring mostly between early March and mid-April 2020. For several days, UVIs observed in 2020 exceeded measurements of previous years by up to 140%. Historical means were surpassed by more than six standard deviations at several locations in the Arctic. In northern Canada, the average UVI for March was about 75% larger than usual. UVIs in April 2020 were elevated on average by about 25% at all sites. However, absolute anomalies remained below 3.0 UVI units because the enhancements occurred during times when the solar elevation was still low.
将2020年1月至6月期间在10个北极和亚北极地点进行的太阳紫外线辐射（UVR）测量结果与历史观测数据进行了比较。还利用卫星提供的总臭氧柱和UVR数据评估了2020年与往年之间的差异。通过这些测量得出的紫外线指数（UVI）对红斑（晒伤）UVR进行了量化。UVI数据显示出前所未有的巨大异常，主要发生在2020年3月初至4月中旬之间。在几天时间里，2020年观测到的UVI比前几年的测量值高出多达140%。在北极的几个地点，历史平均值被超过了六个以上的标准差。在加拿大北部，3月份的平均UVI比平常大约高75%。2020年4月所有地点的UVI平均升高了约25%。然而，绝对异常仍低于3.0 UVI单位，因为增强发生在太阳高度仍然较低的时期。
Zotero 插件