Role of Coupled Climate-Hydrology-Land Use Connections on Present and Future Hydro-climates of the Greater Horn of Africa

气候-水文-土地利用耦合关系对大非洲之角当前和未来水文气候的作用

• 批准号: 1305043
• 负责人: Richard Anyah
• 金额: $ 9.41万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1305043&HistoricalAwards=false
• 关键词: Role; Coupled; Climate; Hydrology; Land

The physical and dynamical processes that control, and at times constrain, climate-hydrology connections over the Greater Horn of Africa (GHA) operate on top of highly variable and constantly changing land use and vegetation cover conditions. The central hypothesis of this project is that key mechanisms and drivers of climate-hydrology-land use connections and associated hydro-climatic variability and changes over the GHA can only be well understood through an integrated process-based approach, employing a dynamically coupled climate-hydrology modeling system. Under this support, multiple observation datasets will be utilized to investigate historical climate events, especially droughts. A comparison between an ensemble of coupled Weather Research and Forecasting Model (WRF) simulations and a suite of Coordinated Regional Downscaling Experiments (CORDEX) model simulations will be undertaken. The role of global SST anomalies, change in Congo Air Mass, and changes in land use/cover characteristics in extreme precipitation (droughts/floods) will be examined.

物理和动力过程控制，有时限制，气候水文连接在大非洲之角（GHA）的操作高度可变和不断变化的土地利用和植被覆盖条件之上。该项目的核心假设是，气候-水文-土地利用连接的关键机制和驱动因素以及GHA的相关水文-气候变异性和变化只能通过基于过程的综合方法，采用动态耦合的气候-水文模拟系统来很好地理解。在这一支持下，将利用多个观测数据集调查历史气候事件，特别是干旱。 将对耦合天气研究和预报模式（WRF）模拟的集合和一套协调区域降尺度实验（CORDEX）模式模拟进行比较。全球海温异常的作用，在刚果气团的变化，并在极端降水（干旱/洪水）的土地利用/覆盖特征的变化将被检查。