Globe Soil Moisture Investigation

全球土壤湿度调查

• 批准号: 9801925
• 负责人: James Washburne
• 金额: $ 55.34万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9801925&HistoricalAwards=false
• 关键词: Globe; Soil; Moisture; Investigation

In response to an Announcement of Opportunity for the Global Learning and Observations to Benefit the Environment Program (GLOBE) this project is designed to meet GLOBE goals and objectives of linking scientists and schoolchildren in a global information network with the ultimate goal of better understanding Earth's environment and changes that take place within it. This proposal consists of various segments addressing GLOBE Program needs: support for existing protocols, development of new protocols, and scientific research with GLOBE data. This proposal will the support and development of support the current set of GLOBE soil moisture protocols and learning activities. Soil moisture data collected by GLOBE students represents a unique and valuable resource to Earth scientists. The GLOBE student data have the potential to become the first readily accesible, long-term, and consistent record of near-surface soil moisture available on a global basis. This soil moisture data can be used to validate satellite microwave derived soil moisture estimates and to validate this component in GCM and mesoscale models. The prospect for direct validation of microwave data is limited by the current launch schedule, but there is much that can be done comparing these observations to seasonal patterns in forward models of microwave soil response. The area of weather and climate model initialization, updating, and validation holds more short-term promise, since the current parametrization of soil moisture is crude. Improving the representation of land-surface hydrology is a major focus of this research. In response to an Announcement of Opportunity for the Global Learning and Observations to Benefit the Environment Program (GLOBE) this project is designed to meet GLOBE goals and objectives of linking scientists and schoolchildren in a global information network with the ultimate goal of better understanding Earth's environment and changes that take place within it. This proposal consists of various segments addressing GLOBE Program needs: support for existing protocols, development of new protocols, and scientific research with GLOBE data. This proposal will the support and development of support the current set of GLOBE soil moisture protocols and learning activities. Soil moisture data collected by GLOBE students represents a unique and valuable resource to Earth scientists. The GLOBE student data have the potential to become the first readily accesible, long-term, and consistent record of near-surface soil moisture available on a global basis. This soil moisture data can be used to validate satellite microwave derived soil moisture estimates and to validate this component in GCM and mesoscale models. The prospect for direct validation of microwave data is limited by the current launch schedule, but there is much that can be done comparing these observations to seasonal patterns in forward models of microwave soil response. The area of weather and climate model initialization, updating, and validation holds more short-term promise, since the current parametrization of soil moisture is crude. Improving the representation of land-surface hydrology is a major focus of this research.

为了响应全球学习和观察惠及环境方案(GLOBE)机会的宣布，该项目旨在实现GLOBE的目标和目标，即在全球信息网络中将科学家和学童联系起来，最终目的是更好地了解地球环境和在地球上发生的变化。该提案包括满足Globe计划需求的各个部分：支持现有协议、开发新协议以及利用Globe数据进行科学研究。这项提议将支持和发展全球土壤水分计划，支持当前的一套全球土壤水分协议和学习活动。全球学生收集的土壤水分数据对地球科学家来说是一种独特而宝贵的资源。全球学生数据有可能成为全球第一个容易获得的、长期的、一致的近地表土壤湿度记录。这些土壤水分数据可用于验证卫星微波提取的土壤水分估计，并在GCM和中尺度模式中验证这一分量。直接验证微波数据的前景受到当前发射时间表的限制，但将这些观测结果与微波土壤响应的正向模型中的季节性模式进行比较，可以做很多工作。天气和气候模型的初始化、更新和验证领域拥有更多的短期前景，因为目前的土壤湿度参数是粗略的。提高地表水文学的表现力是本研究的一大重点。为了响应全球学习和观察惠及环境方案(GLOBE)机会的宣布，该项目旨在实现GLOBE的目标和目标，即在全球信息网络中将科学家和学童联系起来，最终目的是更好地了解地球环境和在地球上发生的变化。该提案包括满足Globe计划需求的各个部分：支持现有协议、开发新协议以及利用Globe数据进行科学研究。这项提议将支持和发展全球土壤水分计划，支持当前的一套全球土壤水分协议和学习活动。全球学生收集的土壤水分数据对地球科学家来说是一种独特而宝贵的资源。全球学生数据有可能成为全球第一个容易获得的、长期的、一致的近地表土壤湿度记录。这些土壤水分数据可用于验证卫星微波提取的土壤水分估计，并在GCM和中尺度模式中验证这一分量。直接验证微波数据的前景受到当前发射时间表的限制，但将这些观测结果与微波土壤响应的正向模型中的季节性模式进行比较，可以做很多工作。天气和气候模型的初始化、更新和验证领域拥有更多的短期前景，因为目前的土壤湿度参数是粗略的。提高地表水文学的表现力是本研究的一大重点。