Seasonal and Inter-annual Variability of Atmospheric Turbidity with an Emphasis on the Southern Hemisphere

以南半球为重点的大气浑浊度的季节和年际变化

• 批准号: 9709667
• 负责人: Cort Willmott
• 金额: $ 5.95万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9709667&HistoricalAwards=false
• 关键词: Seasonal; Inter; annual; Variability; Atmospheric

University of Delaware The objective of this investigation is to improve our knowledge of aerosols by estimating and examining atmospheric turbidity. Turbidity represents the ability of aerosols to attenuate solar radiation. The objective is to develop and apply techniques for estimating monthly and possibly daily turbidity from readily available surface-weather and remotely-sensed data, regardless of cloud cover. Using a high resolution spectral radiation model, the investigators will parameterize clear sky beam irradiance and integrate the expression over the day to obtain an equation for estimating potential daily clear sky beam irradiation. Using daily and monthly averaged data, the plan is to solve for turbidity at an array of sample weather station locations. By evaluating data for the 1980s, the method will produce new and more useful estimates of turbidity trends and variability for the Southern Hemisphere. Plans are to disseminate these to scientists over the Internet.

特拉华州大学 这项调查的目的是提高我们的知识，气溶胶通过估计和检查大气浊度。 浑浊度代表气溶胶衰减太阳辐射的能力。 目的是开发和应用技术，根据现有的地面天气和遥感数据，不论云层覆盖情况如何，估算每月和可能每日的混浊度。 使用高分辨率的光谱辐射模型，研究人员将参数化晴空光束辐照度，并在一天内积分表达式，以获得估计潜在的每日晴空光束辐照的方程。 使用每日和每月的平均数据，该计划是解决在一系列样本气象站位置的浊度。 通过评估20世纪80年代的数据，该方法将产生新的和更有用的南半球浊度趋势和变化的估计。 计划通过互联网向科学家传播这些信息。