Ultraviolet Radiation in the Arctic: 2012-2015

该项目的目的是确保在2012年8月1日至2015年7月31日期间在巴罗和顶峰继续进行紫外线观测。这些数据包括280至600纳米之间的太阳光谱辐照度、生物有效剂量率、总臭氧、表面反照率、云光学厚度、光化通量和常见反应的光解率，如臭氧和NO2的光解。所有数据均通过ACADIS、WOUDC和NDACC提供。在巴罗，影响紫外线辐射的几个关键参数，如积雪和海冰面积正在迅速变化。气候数据记录的延长将为研究环境变化对紫外线辐射的影响提供一个独特的机会。顶峰的测量非常适合探测自由对流层和研究污染物和气溶胶的长距离传输对紫外线辐射的影响。拟议项目的关键智力价值集中在获取可用于促进以下方面的知识的数据：(1)北极现在和未来的太阳辐射气候；(2)推动紫外线辐射变化的因素。例如，通过将紫外线数据与其他测量和建模相结合，可以开发参数化来预测未来的紫外线强度并改进气候模型(例如，CCM)。对Barrow的长紫外线数据记录的分析也将有助于回答搜索问题？北极是否正在走向一种新的状态。紫外线数据对其他怡安项目具有重要意义，并增强了它们的智力价值。这项活动的更广泛影响是向包括卫星地面实况在内的不同学科的研究人员和教育工作者提供数据，以便在科学课程和课程中使用。PI打算继续为NOAA北极成绩单做出贡献，并将数据整合到该大学的非专业课程中。

The purpose of this project is to ensure continuation of UV observations at Barrow and Summit over the period 1-August 2012 ? 31-July 2015. These data include spectra of solar spectral irradiance between 280 and 600 nm, biologically effective dose-rates, total ozone, surface albedo, cloud optical depth, actinic flux, and photolysis rates for common reactions such as the photolysis of O3 and NO2. All data are made available via ACADIS, WOUDC, and NDACC. At Barrow, several key parameters affecting UV radiation such as snow cover and sea ice extent are changing rapidly. Extension of the climate data record (CDR) will provide 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. The key intellectual merit of the proposed project centers on acquiring data that can be used to advance knowledge (1) of the present and future solar radiation climate of the Arctic and (2) of the factors that drive changes in the UV radiation. For example, by combining UV data with other measurements and modeling, parameterizations can be developed to predict future UV intensities and improve climate models (e.g., CCMs). Analysis of the long UV data record from Barrow will also help answering the ?SEARCH Question? whether the Arctic is moving to a new state. UV data are of importance for other AON projects and augment their intellectual merit. The broader impacts of this activity are to provide data to researchers in various disciplines, including satellite ground truthing, and to educators for use in science courses and curricula. The PIs intend to continue contributing to the NOAA Arctic Report Card and integrating the data into non-major courses at the university.