GEOTRACES Atlantic Section: Aerosol and Rainfall collection and analysis

GEOTRACES 大西洋部分：气溶胶和降雨收集和分析

• 批准号: 1132766
• 负责人: William Landing
• 金额: $ 2.71万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1132766&HistoricalAwards=false
• 关键词: GEOTRACES; Atlantic; Section; Aerosol; Rainfall

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.

2010年秋天，美国GEOTRACES北大西洋航段开始对受大气沉积影响增强的盆地内痕量金属和同位素的分布进行调查。由于该船（R/V Knorr）推进系统损坏，巡航提前停止，当时巡航轨迹还不到三分之一。该部分的完成时间已重新安排在 2011 年秋季。通过快速响应研究补助金 (RAPID) 的资助，佛罗里达州立大学的一个研究小组将继续在 GEOTRACES 北大西洋部分巡航中收集气溶胶和降雨样本。 2011 年，从而完成了 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，以获取大量TEI。该团队将分析所有气溶胶样品的超纯水溶性、海水可溶性和总（残留）TEI。将分析过滤和未过滤的雨样，以量化可溶性和颗粒 TEI 浓度。所有采样日的气团返回轨迹将使用 NOAA HySplit 程序进行建模。这些气溶胶样品和一系列海水样品将通过利用同位素稀释和高分辨率扇形磁ICPMS的岸基柱萃取方法来分析锰、铁、钴、镍、铜、锌、镉和铅。更广泛的影响。 研究生的教育和培训是这项研究的重要组成部分。这位 PI 定期教授本科生和研究生课程，并将其实地考察结果纳入讲座材料中，以激励下一代地球科学家。研究人员（PI 和研究生）将受益于参与将创造多种合作的大型项目。 FSU 化学和/或生物学专业的本科生（男性、女性、少数族裔）通过每年请求 REU 补充品参与研究。结果将在国家/国际科学会议上公布，并在同行评审期刊上发表。数据将根据NSF/OCE和GEOTRACES计划的要求及时提交。