Measurement of CFC Samples Collected From the Eastern Eurasian Basin on Polarstern Cruise Ark XI/1

摘要 Smethie，William Lamont-Doherty哥伦比亚大学地球观测站 PI建议测量1995年在一艘德国研究船上在北冰洋采集的水样中的氟氯化碳含量。这些分析将用于确定不同水深的水在大陆架区域的洋面停留的时间。这项技术不仅揭示了水在北冰洋下沉和扩散所需的时间，还揭示了携带CFC的水流路径。这项研究的结果将产生关于北冰洋造成污染物扩散的水团交换的确切信息，并提供证据，说明自以前确定目前的模式以来，目前的模式可能因全球气候变化而发生变化。越来越多的证据表明，在过去十年中，目前的模式发生了变化，这项研究将为这些初步结果提供重要的新信息。

ABSTRACT OPP-9615312 SMETHIE, WILLIAM LAMONT-DOHERTY EARTH OBSERVATORY COLUMBIA UNIVERSITY The PI proposes to measure the chlorofluorocarbon (CFC) content of water samples taken in the Arctic Ocean on a German research ship in 1995. The analyses will be used to determine the amount of time that has passed since the water at different water depths was at the ocean surface in continental shelf regions. This technique not only reveals the time that it takes for water to sink and spread through the Arctic Ocean but also reveals pathways for currents in which the CFCs are carried. The results of this study will yield definitive information on water-mass exchanges in the Arctic Ocean that are responsible for dissemination of pollutants and provide evidence of current patterns that may have changed in response to global climate change since the current patterns were previously determined. There is increasing evidence that current patterns have changed in the past decade and this study will add important new information to those preliminary results.