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

哥伦比亚大学威廉·拉蒙特-多尔蒂地球天文台OPP-9615312 SMETHIE建议国际海洋研究所于1995年在一艘德国科考船上测量北冰洋水样的氯氟化碳含量。这些分析将被用来确定自不同水深的水在大陆架地区的海洋表面以来所经过的时间量。这项技术不仅揭示了水在北冰洋下沉和扩散所需的时间，还揭示了携带氯氟化碳的洋流路径。这项研究的结果将提供关于北冰洋水团交换的明确信息，这些交换是造成污染物扩散的原因，并提供证据，说明自以前确定当前模式以来，随着全球气候变化，当前模式可能发生了变化。越来越多的证据表明，目前的模式在过去十年中发生了变化，这项研究将为这些初步结果增加重要的新信息。

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.