Connections Among Atmospheric Forcing, Runoff and Conditions in the Laptev and East-Siberian Seas

这项研究建议评估大气强迫在将莱纳河、亚纳河、印第安格河和科利马河流域的陆地水文与河流水向拉普特夫海和东西伯利亚海的运输和命运联系起来方面所起的作用。基本的假设将北极气候变化的因素，如气旋频率和变暖，与永久冻土融化和河流径流增加结合在一起，这反过来又导致陆上溶解物质和固体物质流向陆架海的流量增加。此外，还假设北极中部大气环流的气旋和反气旋模式之间的转换，以响应北极涛动(AO)的阶段性，驱动拉普特夫海和东西伯利亚海的环境变化。这些假设将通过获取、合成和分析莱纳河-拉普特夫海和东西伯利亚陆架系统的大气、陆地和海洋水文和水化学数据来检验。这项研究将包括对2000年和2002年从拉普特夫海和东西伯利亚海获得的两组现有的冻水、沉积物和颗粒物样本进行分析。

This research proposes to assess the role of atmospheric forcing in linking land hydrology in the watersheds of the Lena, Yana, Indigirka and Kolyma rivers with the transport and fate of riverine waters to the Laptev and East Siberian seas. The underlying hypothesis couples elements of Arctic climate change, such as cyclone frequency and warming, with permafrost melting and increased river runoff that lead, in turn, to increased flux of dissolved and solid terrestrial matter to the shelf seas. It is hypothesized, additionally, that shifts between the cyclonic and anticyclonic modes of atmospheric circulation over the central Arctic, in response to the phasing of the Arctic Oscillation (AO), drive environmental shifts in the Laptev and East Siberian seas. These hypotheses will be tested through acquisition, syntheses and analyses of atmospheric, land and ocean hydrological, and hydrochemical data for the Lena River-Laptev Sea and East Siberian land-shelf systems. The research will involve analyses of two existing sets of frozen water, sediment and particulate matter samples obtained in 2000 and 2002 from the Laptev and East Siberian seas.