Solar Radiation in the High Latitude Southern Hemisphere

本研究的重点是利用位于南极洲帕尔默站和阿根廷乌斯怀亚的美国国家科学基金会光谱仪获得的测量数据，对南半球高纬度地区的太阳辐射进行数据分析和理论建模。目的是确定和量化造成在光谱的紫外和可见区域观察到的表面辐照度变化的物理机制，重点是前者。待研究的变化跨越与云量波动有关的小时至几年的时间尺度，其中的变化可能是由于当地云量和臭氧水平从一年到下一年的差异而引起的。将特别注意在帕尔默站春季臭氧耗损期间测量的紫外线辐射水平，以及在乌斯怀亚低纬度地区寻找任何影响。研究结果将全面描述帕尔默站和乌斯怀亚的可见和与生物有关的紫外光谱部分的辐射环境。

This research focuses on data analysis and theoretical modeling of solar radiation in the high latitude Southern Hemisphere using measurements obtained by NSF spectroradiometers located at Palmer Station, Antarctica and Ushuaia, Argentina. The objectives are to define and quantify the physical mechanisms responsible for observed variations in surface irradiance in the ultraviolet and visible regions of the spectrum, with emphasis on the former. Variations to be studied span time scales of hours, associated with fluctuations in cloudiness, to several years, where changes can arise from differences in local cloudiness and ozone levels from one year to the next. Special attention will focus on ultraviolet radiation levels measured during the springtime ozone depletion over Palmer Station and a search for any effects at the lower latitude of Ushuaia. The results will provide a comprehensive description of the radiation environments at Palmer Station and Ushuaia in the visible and biologically relevant ultraviolet portions of the spectrum.