Climate Variations and Trends

题目：气候变化和趋势这项资助主要支持基于观测数据分析的天气和气候的持续研究。PI将(i)分析地表气温和降水的年代际变化，作为确定人类活动是否以及在何种程度上影响气候的手段；（ii）研究赤道非绝热加热场的赤道不对称在赤道纬向海平面压力梯度的形成中所起的作用，以确定类似季风的跨赤道气流是否可以介导南方涛动的极性反转；（iii）根据卫星图像记录地表植被的变率，并将这种变率与诸如降雨和日最高/最低温度等气候变量联系起来；（iv）确定在特定天气预报情况下环流的可预测性；（五）发展和应用统计方法，用于天气和气候研究。这项研究很重要，因为它试图增加对重要气候和天气过程的理解，从而可能导致更好地预测这些现象。

Abstract ATM-9805886 Wallace, John M. University of Washington Title: Climate Variations and Trends This grant supports continued studies of weather and climate based largely on analyses of observational data. The PI will (i) analyze interdecadal variations in surface air temperature and precipitation as a means of determining whether and to what extent human activities are influencing climate; (ii) study the role of equatorial asymmetries in the diabatic heating fields in setting up zonal sea-level pressure gradients along the equator in order to determine whether monsoon-like cross-equatorial flows could mediate polarity reversals of the Southern Oscillation; (iii) document the variability of land surface vegetation based on satellite imagery and relate the variability to climatic variables such as rainfall and daily max/min temperatures; (iv) determine the predictability of the circulation in specific weather forecast situations; and (v) develop and apply statistical methods for use in weather and climate research. This research is important because it seeks to increase understanding of important climate and weather processes and hence may lead to better predictions of these phenomena.