GLOBE Soil Moisture Investigation

为响应全球学习和观测造福环境项目（GLOBE）的机会公告，本项目旨在实现GLOBE的目标和宗旨，即将全球信息网络中的科学家和学童与更好地了解地球环境及其内部发生的变化的最终目标联系起来。该提案由解决GLOBE计划需求的各个部分组成：支持现有协议，开发新协议以及使用GLOBE数据进行科学研究。这项建议将支持和发展目前的全球土壤湿度协议和学习活动。GLOBE学生收集的土壤湿度数据对地球科学家来说是一种独特而宝贵的资源。GLOBE学生数据有可能成为第一个易于获取的、长期的、一致的全球近地表土壤湿度记录。该土壤湿度数据可用于验证卫星微波导出的土壤湿度估计，并验证该分量在GCM和中尺度模式中的有效性。直接验证微波数据的前景受到当前发射计划的限制，但可以将这些观测结果与微波土壤响应正演模型的季节模式进行比较。天气和气候模式的初始化、更新和验证领域拥有更多的短期前景，因为当前土壤湿度的参数化是粗糙的。改善地表水文的表征是本研究的主要重点。

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 accessible, 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 parameterization of soil moisture is crude. Improving the representation of land-surface hydrology is a major focus of this research.