Development of Tools and Linkages for Regional Hydrologic Assessments

9634337麦克尼德这个项目的目的是开发气候模型和田纳西河水文学之间的工具和联系。具体地说，我们将研究评估田纳西河水系水库和溪段水域热质量的关系和技术。以前的研究表明，水的热质量对维护河流系统的生态至关重要，也是对沿江工业的监管约束。这也是一个河流属性，可能对降水、蒸散量以及温度变化等水文特征的变化很敏感。因此，在气候变化的情况下，它是令人担忧的。为了建立和检验热质量评估模式，我们将重点模拟1988年-时期，这是该地区目前气候记录中最大的水文对比。该项目将利用中尺度大气模型为水文模型开发更高分辨率的输入，开发基于物理的水文模型以描述河流流动，并利用水库分析模型将物理信息转化为经济和环境质量衡量标准。这项研究的目的是确定全球尺度模式是否能够捕捉到影响区域水文的重要年际信号，以及这种信息是否能够通过中尺度模式通过水文模式准确地传播到热质模式，以复制实际的影响。

9634337 McNider It is the purpose of this project to develop tools and linkages between climate models and the hydrology of the Tennessee River. Specifically, we will examine the relationships and techniques for assessing the thermal quality of the waters of the reservoirs and stream sections of the Tennessee River System. Previous studies have shown that the thermal quality of water is critical to maintenance of the ecology of the river system and is a regulatory constraint for industries along the river. This also a river attribute which may be sensitive to changes in hydrological characteristics such as precipitation evapotranspiration as well as changes in temperature. Thus, it is of concern in climate change scenarios. In order to build and test thermal quality assessment models we will emphasize modeling the 1988-1989 period which represents the biggest hydrological contrast in the present climate record for this region. The project will utilize mesoscale atmospheric models to develop higher resolution inputs to the hydrologic models, physically based hydrologic models to characterize streamflows and a reservoir analysis model to translate physical information into economic and environmental quality measures. The objective of the study is to determine whether a global scale model can capture the important interannual signals affecting regional hydrology and whether this information can be propagated with fidelity through a mesoscale model through a hydrology model to a thermal quality model to replicate actual impacts.