Ultraviolet Radiation in the Arctic: 2012-2015

In 1987, responding to serious ozone depletion reported in Antarctica, the National Science Foundation established a network of instruments to observe solar ultraviolet (UV) radiation at high latitudes. The network eventually grew to seven sites including two Arctic locations at Barrow, Alaska (71° 19’ N), and Summit, Greenland (72° 34’ N). Data available through ACADIS include measurements of UV radiation and related data products from Barrow starting in 1991 and from Summit starting in 2004. Effective 1-August 2009, the two sites were integrated into NSF’s Arctic Observing Network as part of the NSF AON projects “Ultraviolet Radiation in the Arctic” and, since 2012, “Ultraviolet Radiation in the Arctic: 2012-2015.” Data include spectra of solar spectral irradiance between 280 and 600 nm, biologically effective dose-rates, total ozone, surface albedo, and cloud optical depth. The long time-series provides a unique opportunity to study the effect of a changing environment on UV radiation. Measurements at Summit are ideally suited to probe the free troposphere and study the effects of long-range transport of pollutants and aerosols on UV radiation. Data can also be used for validation of satellite observations, verification of models describing the transfer of radiation through the atmosphere, advancement of climate models, and addressing the SEARCH question whether the Arctic is moving to a new state. Data of this project are part of the preceding project "Ultraviolet Radiation in the Arctic". Please reference the link for preceding projects further down this page, or go to https://www.aoncadis.org/project/ultraviolet_radiation_in_the_arctic.html directly.

1987年，针对南极洲报告的严重臭氧损耗情况，美国国家科学基金会（National Science Foundation，NSF）搭建了一套观测仪器网络，用于观测高纬度地区的太阳紫外线（ultraviolet，UV）辐射。该网络最终发展为包含7个站点的观测体系，其中包括位于阿拉斯加州巴罗（71°19′N）和格陵兰岛萨米特（72°34′N）的2个北极站点。可通过ACADIS获取的数据集涵盖了1991年起来自巴罗、2004年起来自萨米特的紫外线辐射测量数据及相关配套数据产品。2009年8月1日起，这两个站点被纳入美国国家科学基金会北极观测网络（Arctic Observing Network，AON），作为NSF AON项目“北极紫外线辐射”的组成部分；自2012年起，相关项目更改为《北极紫外线辐射：2012-2015》。

数据集包含280~600纳米波段的太阳光谱辐照度（solar spectral irradiance）谱、生物有效剂量率（biologically effective dose-rates）、总臭氧量、地表反照率（surface albedo）以及云光学厚度（cloud optical depth）。这套长时序观测数据为探究环境变化对紫外线辐射的影响提供了绝佳契机。萨米特站点的观测数据十分适用于探测自由对流层（free troposphere），并研究污染物与气溶胶的长距离传输对紫外线辐射的作用机制。该数据集还可用于卫星观测结果的验证、大气辐射传输模型的校验、气候模型的迭代优化，并回应北极是否正转向全新气候状态的SEARCH相关研究议题。

本项目数据集隶属于前期开展的“北极紫外线辐射”项目。请参阅本页面下方的过往项目链接，或直接访问https://www.aoncadis.org/project/ultraviolet_radiation_in_the_arctic.html。