Polar Ozone Depletions and Biologically Relevant UltravioletRadiation

极地臭氧消耗和生物相关的紫外线辐射

• 批准号: 9200747
• 负责人: Knut Stamnes
• 金额: $ 22.28万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9200747&HistoricalAwards=false
• 关键词: Polar; Ozone; Depletions; Biologically; Relevant

Data from the National Science Foundation-sponsored monitoring sites of ultraviolet and visible radiation in Antarctica and Barrow, Alaska will be used to determine the relationship between biologically effective ultraviolet radiation, ozone abundance and cloud effects. Satellite data on ozone abundance and cloud properties will be used in a radiative transfer model to compute the ultraviolet radiation budget at these sites. Comparison with the ground-based measurements will be made to determine the feasiblity of assessing the biospheric ultraviolet radiation environment in the polar regions from space. Climatological estimates of the surface albedo will then be used to assess how the ultraviolet and visible radiation budget varies with season throughout the Antarctic and Arctic regions. The relative magnitudes of UVB (280-320 nm), UVA (320-400 nm), and photosynthetically active radiation (PAR, 400-700 nm) will be assessed as a function of latitude and season and climatological parameters (turbidity, cloud cover, etc.). Finally, a coupled atmosphere/ocean radiation model will be used to estimate the amount of ultraviolet and visible radiation penetrating to various levels in the polar ocean as a function of ocean productivity.

来自国家科学基金会赞助的监测站点的数据和阿拉斯加南极洲和巴罗的可见辐射位置将用于确定生物学上有效的紫外线辐射，臭氧丰度和云效应之间的关系。 有关臭氧丰度和云特性的卫星数据将在辐射转移模型中使用，以计算这些地点的紫外线辐射预算。 将进行与地面测量值进行比较，以确定评估空间极性区域的生物圈紫外线辐射环境的轻度性。 然后，将使用表面反照率的气候估计值来评估紫外线和可见辐射预算如何随季节而变化，随着整个南极和北极区域的变化。 UVB（280-320 nm），UVA（320-400 nm）和光合有效辐射（PAR，400-700 nm）的相对大小将作为纬度和季节和气候参数（浊度，云覆盖等）评估。 最后，将使用一个耦合的气氛/海洋辐射模型来估计紫外线和可见辐射的量，并随着海洋生产力的函数，渗透到极地海洋中的各种水平。