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

该项目旨在收集和综合目前可获得的环境数据（景观特征、气象、活动层和永久冻土特征）沿俄罗斯萨哈共和国的东西伯利亚横断面，在GIS中与阿拉斯加计划的格式相同。这些数据将用于在15至20个站点校准目前可用的数值和分析模型，并用于调查当前的活跃层和永久冻土条件，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跃层和永久冻土条件，并利用该地区现有的气候情景预测未来（50至100年）活跃层和永久冻土条件。关于活动层和永久冻土层过去和未来变化的信息对于评估北极土壤中碳的分解和储存的过去和未来变化是重要的，这些变化控制着微量气体向大气的释放。永久冻土的融化将使植物能够吸收更多的养分，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。

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.