The University of Arizona - AGRHYMET Planning Visit

亚利桑那大学AGRHYMET计划访问提案旨在在亚利桑那大学和尼日尔（尼亚美）的AGRHYMET之间建立新的研究合作。这笔资金将支持亚利桑那大学的一个小组在Juan B Valdes和Aleix Serrat-Capdevila的指导下访问尼亚美（尼日尔），对AGRHYMET进行研究计划访问。AGRHYMET是由9个成员国组成的萨赫勒地区干旱控制常设国家间委员会（CILSS）的一个专门研究所，是区域农业气象和水文监测科学和技术的卓越中心，也是其他专业领域的卓越中心。此次访问的目的是制定一项联合研究议程，以利用地面和卫星估算改善非洲季风区降水的时空特征，并改进卫星降水估算在水文学应用和预警系统中的使用。为了实现这些目标，我们将比较非洲季风区（即热带辐合带）不同纬度上不同来源、不同空间尺度和分辨率的雨量计和卫星降水测量结果。我们还将评估卫星测量的局部校准和偏差修正，并对估计中包含的不确定性进行分析。最后，我们还将比较不同季风区流域的集总和分布水文模型中不同降水产品的使用。这次计划访问和团队之间的后续交流将导致一个组织良好、重点突出的科学研究议程，旨在改善实时降水估计，在全球降水监测、流量预测和水资源管理（分配、水库运营）方面具有重要的更广泛的影响。因此，该提案得到了国际水资源综合管理中心（ICIWaRM-UNESCO）和联合国教科文组织撒哈拉以南G-WADI网络计划秘书处的支持，该计划由AGRHYMET主持。

The University of Arizona AGRHYMET Planning Visit proposal is aimed at establishing a new research collaboration between The University of Arizona and AGRHYMET in Niger (Niamey). The funds will support the visit of a University of Arizona team, under the direction of Juan B Valdes and Aleix Serrat-Capdevila, to Niamey (Niger) for a research planning visit to AGRHYMET. A specialized institute of the Permanent Interstate Committee for Drought Control in the Sahel (CILSS) composed of nine member states, AGRHYMET is a Centre of Excellence in the science and techniques for regional agro-meteorological and hydrological monitoring, among other domains of expertise. The goal of the visit is to elaborate a joint research agenda to improve the spatio-temporal characterization of precipitation in the African Monsoon Region using both ground and satellite estimates, and to improve the use of satellite precipitation estimates in hydrologic applications and early warning systems. To achieve these goals, we will compare rain gauges and satellite precipitation measurements from different sources and different spatial scales and resolutions, across different latitudes in the African Monsoon Region (i.e. the Inter-Tropical Convergence Zone). We will also evaluate local calibrations and bias corrections of satellite measurements, and perform an analysis of the uncertainty contained in the estimates. Finally we will also compare the use of different precipitation products in lumped and distributed hydrologic models for basins in different monsoon regions.This planning visit and later communication between teams will lead to a well organized and focused scientific research agenda aimed at improving real-time precipitation estimates with important broader implications in terms of precipitation monitoring, streamflow forecasting and water resources management (allocation, reservoir operations) in poorly gauged basins across the world. For this reason, this proposal has the support of ICIWaRM-UNESCO (International Center for Integrated Water Resources Management) and the Secretariat of the Sub-Saharan G-WADI network program of UNESCO, chaired by AGRHYMET.