GEOTRACES Atlantic Section: Aerosol and Rainfall collection and analysis

2010年秋季，美国GEOTRACES北大西洋部分巡航开始调查整个盆地的痕量金属和同位素分布情况，大气沉积的影响增强。由于该船（R/V Knorr）的推进系统受损，巡航在早期阶段停止，当时完成了不到三分之一的巡航轨迹。该部分的完成时间已重新安排在2011年秋季。通过快速反应研究赠款（RAPID），佛罗里达州立大学的一个研究小组将在2011年继续在GEOTRACES北大西洋部分巡航中收集气溶胶和降雨样本，从而完成2010年启动的工作。在世界各地研究人员的合作下，将对24小时综合气溶胶样本和基于事件的降雨样本进行分析，以获得大量TEI。该小组将分析所有气溶胶样品的超纯水溶性，海水溶性和总（残留）TEI。将对过滤和未过滤的雨水样本进行分析，以量化可溶性和颗粒TEI浓度。将使用NOAA HySplit程序对所有采样日的气团后向轨迹进行建模。这些气溶胶样品和一系列海水样品将采用岸基柱提取法，利用同位素稀释和高分辨率磁扇形ICPMS分析Mn、Fe、Co、Ni、Cu、Zn、Cd和Pb。更广泛的影响。 研究生的教育和培养是本研究的重要组成部分。PI定期教授本科生和研究生课程，并将他的实地考察结果纳入讲座材料，以激励下一代地球科学家。研究人员（PI和研究生）将从参与大型项目中受益，这些项目将创建多种合作。本科FSU化学和/或生物学专业（男性，女性，少数民族）通过每年要求REU补充参与研究。研究结果将在国家/国际科学会议上发表，并发表在同行评审的期刊上。将根据NSF/OCE和GEOTRACES计划的要求及时提交数据。

In the fall of 2010, the US GEOTRACES North Atlantic Section cruise began its survey of the distribution of trace metals and isotopes across a basin where there is an enhanced influence from atmospheric deposition. Due to damages to the ship's (R/V Knorr) propulsion system, the cruise was halted at an early stage when less of a third of the cruise track was completed. The completion of this section has been rescheduled for the fall of 2011.With funding through this Grant for Rapid Response Research (RAPID), a research team at Florida State University will continue collection of aerosol and rainfall samples on the GEOTRACES North Atlantic section cruise in 2011, thereby completing work initiated in 2010. With collaboration from researchers around the world, the 24-hour integrated aerosol samples, and event-based rain samples, will be analyzed for a large suite of TEIs. The team will analyze all aerosol samples for ultra-pure water soluble, seawater soluble, and total (residual) TEIs. Rain samples will be analyzed both filtered and unfiltered, to quantify the soluble and particulate TEI concentrations. Air mass back-trajectories for all sampling days will be modeled using the NOAA HySplit program. Those aerosol samples and a series of seawater samples will be analyzed for Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb with a shore-based column extraction method utilizing isotope dilution and high-resolution magnetic sector ICPMS. Broader Impacts. Education and training of graduate students are essential components of this research. The PI regularly teaches undergraduate and graduate classes and incorporates the results of his fieldwork into lecture materials to motivate the next generation of Earth scientists. The researchers (PI and graduate student) will benefit from participation in large projects that will create multiple collaborations. Undergraduate FSU chemistry and/or biology majors (males, females, minorities) are involved in the research via annual requests for REU supplements. Results will be presented at national/international scientific meetings, and published in peer-reviewed journals. The data will be submitted in a timely manner according to the requirements of NSF/OCE and the GEOTRACES program.