U.S. France Cooperative Research: Vertical Profiles of Krypton-85 as an Indicator of Stratosphere-to-Troposphere Exchange Transport

该奖项将支持合作研究， 马克·克瑞兹博士， 位于奥尔巴尼的纽约大学和约瑟夫·萨纳克博士， Centre des Faibles Radioactivites，Gif-sur-Yvette， 法国 该项目的目标是将 氪-85测量，由法国研究 团队，到美国的计划，其中垂直剖面的 氡、臭氧、一氧化碳、水蒸气和气溶胶将被 采集于北方加州。 的意见 将被用来记录和研究 亚洲地面空气的远距离输送， 将有助于验证全球流通， 化学运输模型 一系列对流层上部氡的测量， 在一架用于这项研究的C-41飞机上， 亚洲边界层空气系统快速输送 到对流层上部靠近加州。 这些 运输也可能是一个重要因素， 化学活性物质的全球分布和预算 物种和气溶胶。 要获取的配置文件 该计划将跨越1-11公里的高度范围， 将被用来记录和研究跨太平洋 对流层中上部的输送。 因为 其半衰期长（10.76年），主要分布在北方 半球源和平流层低丰度， 氪-85测量将是一个有价值的辅助， 研究计划。 此外，Kr-85的观测结果 这将意味着， 对这一现象的自由对流层观测数量 放射性核素，并将增加我们的知识， 大气分布和行为。自成立以来 法国实验室一直是 利用天然放射性核素研究海洋， 气氛 该项目将受益于 关于这一主题的重要专门知识将由 萨纳克博士和他的研究团队。

This award will support collaborative research in atmospheric chemistry between Dr. Mark Kritz, State University of New York at Albany, and Dr. Joseph Sanak, Centre des Faibles Radioactivites, Gif-sur-Yvette, France. The objective of this project is to incorporate Krypton-85 measurements, made by the French research team, into a US program in which vertical profiles of radon, ozone, CO, water vapor and aerosols will be collected over northern California. The observations will be used to document and study episodes of rapid long-range transport of Asian surface-level air, and will aid in the verification of global circulation and chemical transport models. A series of upper tropospheric radon measurements made aboard a C-41 aircraft used in this research revealed systematic, rapid transport of Asian boundary layer air to the upper troposphere near California. These transports could also be a significant factor in the global distribution and budgets of chemically active species and aerosols. The profiles to be acquired in this program will span the altitude range 1-11 km and will be used to document and study trans-Pacific transports in the mid and upper troposphere. Because of its long (10.76 year) half-life, dominance of northern hemisphere sources and low stratospheric abundances, the Krypton-85 measurements will be a valuable adjunct to the research program. In addition, the Kr-85 observations themselves will represent a significant increase in the number of free tropospheric observations of this radionucleide, and will add to our knowledge of its atmospheric distribution and behavior. Since its inception the French laboratory has been among the pioneers in the use of natural radionucleides to study the oceans and atmosphere. This project will benefit from the significant expertise on this topic to be provided by Dr. Sanak and his research team.