Collaborative Research: Permafrost Models Intercomparison Project

合作研究：永久冻土模型比对项目

• 批准号: 0352957
• 负责人: Nikolay Shiklomanov
• 金额: $ 44万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-01 至 2008-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0352957&HistoricalAwards=false
• 关键词: Collaborative; Research; Permafrost; Models; Intercomparison

Funds are provided to develop an innovative methodology for spatially integrated assessment of permafrost conditions at small geographical scales. The project will use comprehensive permafrost modeling, interpolation and scaling techniques, and a large body of empirical information to develop a hierarchical, 'telescoping' approach to (1) advance the testing and improvement of spatial permafrost models, (2) describe the structure of heterogeneity and its translation through a continuum of geographical scales ranging from local to regional, continental, and circumpolar, and (3) design an optimum permafrost observational network. The ultimate goal is to harmonize empirical observations with spatial permafrost modeling and, as a result, increase the scientific credibility of spatial geocryological predictions for the needs of the broader scientific community involved in studying global change in the Arctic. In particular, the proposed effort will:1. provide a comprehensive evaluation and intercomparison of spatially oriented approaches to permafrost modeling, and synthesize knowledge related to the current status of spatial permafrost modeling,2. use results from modeling exercises to discern weaknesses (structural and spatial) in existing observation networks, and make recommendations about improvements to relevant observation programs,3. provide a detailed small-scale characterization of permafrost conditions consistent with observed spatial and temporal patterns, and4. generate a comprehensive set of permafrost-related products (data and models) useful to a broad group of scientists and stakeholders.

提供资金，以开发一种创新方法，在小的地理尺度上对永久冻土条件进行空间综合评估。 该项目将使用全面的永久冻土建模、插值和缩放技术以及大量的经验信息来开发一种分层的“伸缩”方法，以（1）推进空间永久冻土模型的测试和改进，（2）通过从地方到区域、大陆和环极的连续地理尺度来描述异质性结构及其转化，（3）冻土观测网的优化设计。 最终目标是使经验观测与空间永久冻土建模相协调，从而提高空间地质冻土预测的科学可信度，以满足参与研究北极全球变化的更广泛科学界的需要。特别是，拟议的努力将：1。提供了一个全面的评价和相互比较的空间导向的方法来模拟冻土，并综合知识的空间冻土模拟的现状，2.利用模拟试验的结果来识别现有观测网络中的弱点（结构和空间），并对相关观测计划提出改进建议。提供一个详细的小规模的永久冻土条件的表征与观察到的空间和时间模式一致，和4.生成一套对广大科学家和利益攸关方有用的与永冻层有关的全面产品（数据和模型）。