US-Egypt Cooperative Research: Water Storage, Atmospheric Pressure, and the GRACE Gravity Satellite Mission

0315533Wahr描述：该奖项是为了支持科罗拉多大学博尔德分校物理系John Wahr博士和埃及El-Sadat市梅努菲亚大学沙漠环境研究所Mosalam Shaltout博士之间的一个合作项目。主要目标与美国宇航局和德国航天局(德国航天局)于2002年3月发射的为期5年的GRACE重力卫星发射有关。这两个目标都涉及Grace监测埃及地下水和地表水大范围平均变化的能力。这些目标是：(1)验证GRACE数据，以确保它们持续满足精度要求；以及(2)利用GRACE对埃及大规模水资源变化的测量，监测长期含水层损耗以及可用于农业用途的土壤和次土层中的水量变化。作为实现这些目标的努力的一部分，物价指数将继续获取全国各地，包括东南部沙漠周围地区的气压计记录的压力和温度数据。范围：该项目是根据美国国家科学基金会国际科学和工程办公室的赠款启动的一个项目的延续，是将时变卫星重力观测纳入水文科学的总体努力的一部分。这些观测结果构成了一种新的、创新的水文学数据类型，对增进对全球水循环的理解大有可为。该项目将使来自埃及的科学家熟悉对这一新数据类型的分析，埃及是一个水资源问题相当重要的国家。该项目得到了美国-埃及联合基金计划的支持，该计划为两国的科学家和工程师提供资助，以开展这些合作活动。

0315533WahrDescription: This award is to support a collaborative project between Dr. John Wahr, Department of Physics, University of Colorado, Boulder, Colorado and Dr. Mosalam Shaltout, Desert Environment Research Institute, Menoufia University, El-Sadat City, Egypt. The primary objectives are related to the 5-year GRACE gravity satellitemission, launched in March 2002 by NASA and DLR (the German Space Agency). Bothobjectives involve the ability of GRACE to monitor changes in large-scale averages of ground-and surface-water in Egypt. These objectives are:(1) to validate the GRACE data to make sure they are continually meeting accuracy specifications; and (2) to use the GRACE measurements of large-scale water variability in Egypt to monitor such things as long-term aquifer depletion, and changes in the amount of water in the soil and sub-soil layers available for agricultural purposes. As part of the effort to achieve these goals, the PIs will continue the acquisition of pressure and temperature data as recorded at barometers throughout the country, including in the region surrounding the southeastern desert. Scope: This project is the continuation of a project initiated under a grant from NSF, Office of International Science and Engineering, and is part of an overall effort towards integrating time-variable satellite gravity observations into the hydrological sciences. These observations constitute a new and innovative data type for hydrology, with considerable promise for improved understanding of the global water cycle. This project will allow scientists from Egypt, a country where water resource issues are of considerable importance, to familiarize them with the analysis of this new data type. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.