Understanding the Seasonal Cycle of Rainfall over Northern Africa

了解北非降雨的季节周期

• 批准号: 0415481
• 负责人: Kerry Cook
• 金额: --
• 依托单位: Cornell Univ - State: AWDS MADE PRIOR MAY 2010
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0415481&HistoricalAwards=false
• 关键词: Understanding; Seasonal; Cycle; Rainfall; over

Effective prediction of prolonged dry or wet periods, or delays in the onset of summer rains in northern Africa on regional space scales and intraseasonal to interannual timescales would improve resource management and disaster preparation. For this, a better fundamental understanding of the cycle of rainfall must be achieved. The objectives of this research project are an improved understanding of the physical processes that lead to the observed seasonal evolution of rainy seasons over northern Africa and their association with interannual variations. The focus is on the West African monsoon-type system and on the drought-prone regions of East Africa. Observations, reanalysis data and regional numerical modeling will be used to identify the factors in the forcing or the internal regional climate system that explain what drives the rainfall season. An undergraduate student, graduate students and a post-doctoral researcher will participate in the research.

在区域空间尺度和季节内到年际时间尺度上有效预测北方非洲干旱或湿润期的延长或夏季降雨开始的延迟，将改善资源管理和备灾工作。 为此，必须对降雨周期有更好的基本了解。 这一研究项目的目标是更好地了解导致观察到的北方非洲雨季季节演变的物理过程及其与年际变化的关系。 重点是西非季风型系统和东非易干旱地区。 观测、再分析数据和区域数值模拟将用于确定强迫或内部区域气候系统中的因素，这些因素解释了是什么驱动了雨季。 一名本科生、一名研究生和一名博士后研究员将参与这项研究。