Variability of Tropical Circulation and Climate

题目：热带环流和气候的变率项目将继续对热带环流和气候在不同时间尺度上的变率进行研究：(i)撒哈拉以南非洲对流层低层环流的年周期和热带南美洲气流和对流模式的年周期；将重新分析；将审查年际变化的机制；将评估印度洋域和东非作为全球变化一部分的年代际演变，它们可能有助于了解上世纪后半叶的环境突变，以及在全球环流中起关键作用的三个近赤道对流中心；气候预测工作应包括发展赤道东非和巴西东北部降雨异常的方法，这些地区仍然是新技术试验的“机会目标”。各个项目组成部分是相互关联的。这项研究很重要，因为它努力增加我们对气候过程的理解。

Abstract ATM-9403373 Hastenrath, Stefan University of Wisconsin-Madison Title: Variability of Tropical Circulation and Climate The PI will continue research on the variability of tropical circulation and climate on various time scales: (i) The annual cycle of the lower-tropospheric circulation over Subsaharan Africa and of the flow and convection patterns over tropical South America; shall be re-analyzed, (ii) The mechanisms of interannual variability will be examined; (iii) Decadal-scale evolutions as part of global change will be assessed for the Indian Ocean domain and eastern Africa, where they may help understand abrupt environmental changes in the latter part of the last century, and for the three near equatorial convection centers that play a pivotal role in the global circulation; (iv) Climate prediction work shall include method development for rainfall anomalies in equatorial East Africa and northeast Brazil, which continues to be a "target of opportunity" for experimentations with novel techniques. The various projects components are interrelated. This research is important because it strives to add to our understanding of climate processes.