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

这项研究的目的是通过估计和检查大气浊度来提高我们对气溶胶的认识。浊度表示气溶胶衰减太阳辐射的能力。目标是开发和应用技术，从现成的地面天气和遥感数据估计每月和可能每天的浊度，而不考虑云量。利用高分辨率光谱辐射模型，研究人员将晴空光束辐照度参数化，并对全天的表达式进行积分，得到估算晴空光束潜在日辐照度的方程。利用每日和每月的平均数据，该计划是在一系列样本气象站位置求解浊度。通过评价1980年代的数据，该方法将对南半球的浊度趋势和变率作出新的和更有用的估计。计划是通过互联网将这些信息传播给科学家。

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.