Structure and Mechanisms of Great Plains Hydroclimate Variability
大平原水文气候变化的结构和机制
基本信息
- 批准号:0649666
- 负责人:
- 金额:$ 60.11万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2007
- 资助国家:美国
- 起止时间:2007-04-01 至 2012-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The project is designed to examine the source of hydroclimate variability over the U.S. Great Plains. The contributions of various phenomena ( teleconnection of Pacific and Atlantic sea surface temperatures and the memory inherent in the land surface of North America) to this variability will be investigated through modeling studies. The work begins with an examination of observations and analysis products (atmospheric reanalyses and land surface analyses) to determine the observed modes of variability that may hint at causes. A hierarchy of methods will be applied, from statitical analyses to simplified (diagnostic primitive equation) modeling, and ultimately full climate model simulations. But the main premise, stemming from recent analysis work by the PIs, is that most climate models severely overestimate the strength of the hydrologic cycle over the Great Plains due to errors in model thermodynamics and physics. The National Center for Atmospheric Research (NCAR) Community Climate System Model (CCSM3) will be the testbed for model forcing refinements based on the analyses. The ultimate goal is to improve climate predictions for this region. A graduate student will be supported.
该项目旨在研究美国大平原地区水文气候变异性的来源。将通过模拟研究来研究各种现象(太平洋和大西洋海面温度的遥相关以及北美陆地表面固有的记忆)对这种变化的贡献。这项工作首先对观测和分析产品(大气再分析和陆面分析)进行检查,以确定可能暗示原因的观测到的可变性模式。将应用一系列方法,从统计分析到简化的(诊断原始方程)建模,最后是全面的气候模型模拟。但是,从PIS最近的分析工作中得出的主要前提是,由于模型热力学和物理上的错误,大多数气候模型严重高估了大平原地区的水文循环强度。国家大气研究中心(NCAR)社区气候系统模式(CCSM3)将作为基于分析的模式强迫修正的试验台。最终目标是改善对该地区的气候预测。一名研究生将得到资助。
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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Sumant Nigam其他文献
Sumant Nigam的其他文献
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{{ truncateString('Sumant Nigam', 18)}}的其他基金
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