CMG RESEARCH: Predictive Modeling of Thermally Driven Hydrologic Fluxes for Land and Atmosphere Interactions Across Space and Time Scales
CMG 研究:跨空间和时间尺度的陆地和大气相互作用的热驱动水文通量的预测模型
基本信息
- 批准号:0934837
- 负责人:
- 金额:$ 45万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2009
- 资助国家:美国
- 起止时间:2009-09-01 至 2014-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Soil moisture plays a critical role in many environmental and hydroclimatic applications. In fact, soil moisture is so central to understanding land and atmosphere exchange that the 2007 Phoenix Mars Mission included devices specifically designed to measure soil temperature, thermal properties, and water content. Recognizing the importance of soil moisture as a vital state variable, the 2007 NRC Earth Science Decadal Survey report recommended the satellite mission Soil Moisture Active/Passive (SMAP) for global soil moisture mapping. There are other ongoing global missions, such as the C-ban AMSR-E sensor on the AQUA satellite, which provides soil moisture of the top 1cm of the earth?s skin with two orbital daily coverages in the Southern Great Plains of the U.S. Routine measurements by remote sensing are unable to capture rapidly shifting near-surface soil, heat, and water transport processes despite their importance to understanding land surface hydrology. Because of that, the need for mathematical models to estimate such variabilities and to predict large-scale behavior is more imperative than ever. The proposed work focuses on developing predictive multiscale models for soil moisture dynamics based on liquid and vapor flow coupled with heat transport. These models take into account complex nonlinear interactions at different spatial and temporal scales. Uncertainties at the fine scale are modeled via probabilistic models. The proposed methodologies are designed to readily incorporate available dynamic data at different scales and, thus, will provide an improved guidance for ground validations of upcoming space missions concerning measurements of soil moisture and temperature for heterogeneous subsurface environments.
土壤湿度在许多环境和水文气候应用中起着至关重要的作用。事实上,土壤湿度是了解陆地和大气交换的核心,以至于2007年凤凰号火星任务包括专门设计的测量土壤温度、热性质和水分的设备。认识到土壤湿度作为一个重要状态变量的重要性,2007年NRC地球科学十年调查报告建议卫星任务土壤湿度主动/被动(SMAP)用于全球土壤湿度测绘。还有其他一些正在进行的全球任务,例如AQUA卫星上的C-BAN AMSR-E传感器,它提供地球表层1厘米以下的土壤水分--S皮肤标本每天在美国大平原南部进行两次轨道覆盖。常规的遥感测量无法捕捉到快速变化的近地表土壤、热量和水的输送过程,尽管它们对于了解陆面水文学很重要。正因为如此,需要数学模型来估计这种变异性,并预测大规模的行为,这比以往任何时候都更加迫切。建议的工作集中在开发基于液体和蒸汽流动与热传输耦合的土壤水分动力学预测多尺度模型。这些模型考虑了不同空间和时间尺度上的复杂非线性相互作用。通过概率模型对精细尺度上的不确定性进行建模。拟议的方法旨在方便地纳入不同尺度的现有动态数据,从而为即将进行的关于测量不同地下环境土壤水分和温度的空间飞行任务的地面验证提供更好的指导。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Binayak Mohanty其他文献
Binayak Mohanty的其他文献
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{{ truncateString('Binayak Mohanty', 18)}}的其他基金
Flow-Induced Redox Geochemistry Within Fractured/Macroporous and Layered Vadose Zone
裂缝/大孔和层状包气带内流动诱导的氧化还原地球化学
- 批准号:
0635961 - 财政年份:2007
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
CMG: Multi-Scale Data Assimilation of Soil Moisture Under Heterogeneous Soil Hydraulics
CMG:非均质土壤水力学下土壤水分的多尺度数据同化
- 批准号:
0621113 - 财政年份:2006
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$ 45万 - 项目类别:
Standard Grant
SGER: An Integrated Study of Post-Flood Hydrology, Ecology, Politics and Policy Change: A Cross-National, Urban Perspective
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- 批准号:
0313984 - 财政年份:2003
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Measurement and Modeling of Flow and Transport in Macroporous Soils
大孔土壤中流动和传输的测量和建模
- 批准号:
0106956 - 财政年份:2001
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
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大孔土壤中流动和传输的测量和建模
- 批准号:
0296158 - 财政年份:2001
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
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