Synthesis and Integration of Environmental Data Along the East Siberian Transect and Comparison of Active Layer and Permafrost Conditions with an Alaskan Transect

东西伯利亚断面沿线环境数据的合成和整合以及活动层和永久冻土条件与阿拉斯加断面的比较

• 批准号: 9721347
• 负责人: Vladimir Romanovsky
• 金额: $ 29.01万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-15 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9721347&HistoricalAwards=false
• 关键词: Synthesis; Integration; Environmental; Data; Along

ABSTRACT OPP-9721347 ROMANOVSKY UNIV. ALASKA This project is designed to gather and synthesize currently available environmental data (landscape characteristics, meteorology, active layer and permafrost characteristics) along the East Siberian transect through the Sakha Republic, Russia, in a GIS with the same format as being planned in Alaska. The data will be used to calibrate currently available numerical and analytical models at 15 to 20 sites and be used to investigate current active layer and permafrost conditions, to scale up the results, to investigate past active layer and permafrost conditions using the meteorological record and temperatures in permafrost boreholes, and to predict future (50 to 100 years) active layer and permafrost conditions using available climatic scenarios for the region. Information on past and future variations in the active layer and permafrost is important in assessing past and future changes in the decomposition and storage of carbon in arctic soils which governs the release of trace gases to the atmosphere. Thawing of permafrost will allow plants to tap more nutrients leading to changes in the arctic ecosystems. The proposed study is designed to integrate with existing and future research projects in the program by providing data for use in model parameterization and validating other model predictions.

摘要 电子邮件：[e-mail] 该项目的目的是收集和综合沿着俄罗斯萨哈共和国的东西伯利亚样带现有的环境数据（地貌特征、气象学、活动层和永久冻土特征），并将其纳入一个地理信息系统，其格式与计划在阿拉斯加使用的格式相同。 这些数据将用于校准15至20个地点的现有数值和分析模型，并用于调查当前的活动层和永久冻土条件，扩大结果，利用气象记录和永久冻土钻孔温度调查过去的活动层和永久冻土条件，并利用该区域现有的气候情景预测未来（50至100年）的活动层和永久冻土条件。 有关活动层和永久冻土过去和未来变化的信息对于评估北极土壤中碳分解和储存过去和未来的变化非常重要，北极土壤中碳的分解和储存决定了微量气体向大气的释放。 永久冻土层的融化将使植物获得更多的营养，从而导致北极生态系统的变化。 拟议的研究旨在通过提供用于模型参数化和验证其他模型预测的数据，与该计划中现有和未来的研究项目相结合。