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

摘要OPP-9721347罗曼诺夫斯基大学阿拉斯加该项目旨在收集和综合俄罗斯萨哈共和国东西伯利亚样带沿线目前可用的环境数据(地貌特征、气象、活动层和永久冻土特征)，采用与阿拉斯加计划采用的格式相同的地理信息系统。这些数据将用于校准目前在15至20个地点可用的数值和分析模型，并用于调查当前活动层和冻土条件，扩大结果，利用气象记录和永久冻土钻孔中的温度调查过去的活动层和永冻层条件，并利用该区域现有的气候情景预测未来(50至100年)活动层和永冻层条件。关于活动层和永冻层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的过去和未来变化很重要，北极土壤中碳的分解和储存控制着向大气释放微量气体。永久冻土的融化将使植物能够利用更多的营养物质，从而导致北极生态系统的变化。这项拟议的研究旨在通过提供用于模型参数化的数据并验证其他模型预测来与该计划中现有和未来的研究项目相结合。

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.