Collaborative Research: Global Ocean Survey of Dissolved and Particulate Iron and Aluminum and Aerosol Iron and Aluminum Solubility Supporting the CLIVAR/Repeat Hydrography Project

合作研究：全球海洋溶解和颗粒铁铝调查以及气溶胶铁铝溶解度支持 CLIVAR/重复水文学项目

• 批准号: 0962158
• 负责人: William Landing
• 金额: $ 49.02万
• 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: 2010
• 资助国家: 美国
• 起止时间: 2010-02-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0962158&HistoricalAwards=false
• 关键词: Collaborative; Research; Global; Ocean; Survey

A scientist from Florida State University and one from the University of Hawaii will participate in the final two cruises of the CLIVAR Repeat Hydrography program to sample critical regions of the oceans of particular oceanographic significance and have not been previously sampled during this program. The first section will be S4P in 2011 which will sample a large normally inaccessible High Nutrient Low Chlorophyll (HNLC) region between 160°E and 110°W and involve at least three meridional sections into Antarctic coastal waters as well sampling along a zonal transect at roughly 67°S. The second section is the reoccupation of A16S between ~3°S and 55° S, currently scheduled for 2013 and will complete the Atlantic section. Water samples will be collected at approximately every other station occupied by the regular CLIVAR team, sampling 12 depths to 1000m. The samples will be analyzed on-board for dissolved iron and aluminum, nutrients, and salinity. Additional samples will be stored, acidified, and analyzed on shore for manganese, iron, cobalt, nickel, copper, zinc, cadmium, and lead using inductively coupled plasma mass spectrometry (ICP-MS). In collaboration with the U.S. GEOTRACES steering committee, seawater samples will be collected for shore-based determination of other trace elements and isotopes by other investigators. In addition, the researchers plan to continue the daily-integrated aerosol and event-based rainfall sampling, using existing CLIVAR aerosol and rainfall sampling equipment, as well as the high-volume aerosol sampling equipment and automated rainfall collectors recently purchased for use in the U.S. GEOTRACES program. This will allow us to provide subsamples to the U.S. and international "aerosol community". The aerosol samples will be analyzed for ultrapure water soluble, seawater soluble, and total trace elements using shore-based ICP-MS. Rain samples will be filtered (for samples greater than 200mL volume) and filtered and unfiltered subsamples will be stored frozen for shore-based major ion analyses and ICP-MS trace element analysis.As regards broader impacts, availability of the trace metal dataset acquired as part of the CLIVAR Repeat Hydrography program will advance our knowledge of global biogeochemical cycles and will improve coupled biogeochemical models. Results from the study would be included into class lectures. One postdoc and one graduate student from Florida State University and two postdoc from the University of Hawaii will be supported and trained as part of this project.

佛罗里达州立大学的科学家和夏威夷大学的一名科学家将参加Clivar重复水文计划的最后两次巡游，以品尝具有特定海洋学意义的海洋关键区域，并且在此计划中以前尚未采样。第一部分将是2011年的S4P，该S4P将在160°E和110°W之间采样大型正常无法访问的高营养低叶绿素（HNLC）区域，并在大约67°s的区域沿区域沿区域采样至少三个子午线剖面。第二部分是〜3°S至55°S之间的A16S重新组合，目前计划于2013年，将完成大西洋部分。水样将在常规Clivar团队占用的大约其他车站收集，将12个深度抽样至1000m。样品将在板载板上分析溶解的铁和铝，营养和盐度。使用电感耦合的等离子体质谱法（ICP-MS），将在岸上存储，酸化和分析其他样品，以用于锰，铁，钴，铜，铜，锌，镉和铅。通过与美国地理方向指导委员会合作，其他研究人员将收集基于海岸的其他微量元素和同位素的确定。此外，研究人员计划使用现有的Clivar气溶胶和降雨采样设备以及最近购买的高批量气雾剂采样设备以及最近购买的高量气雾剂采样设备和自动化降雨收集器，以继续日常融合的气溶胶和基于事件的降雨采样。这将使我们能够为美国和国际“气溶胶社区”提供子样本。使用基于海岸的ICP-MS，将分析气溶胶样品的超纯水固体，海水可溶性和总痕量元件。将过滤雨样品（对于大于200ml的样品），并且将冷冻的过滤和未经滤光子样本将用于基于海岸的主要离子分析和ICP-MS痕量元素分析。由于关注较大的影响，痕量金属数据集的可用性将作为Clivar Repryshophy计划获得的一部分获得了我们对全球BiogeChem cyplial cycer cypl and Will bio cyc的知识。该研究的结果将包括在课堂讲座中。该项目的一部分将支持和培训一名来自佛罗里达州立大学的博士后和一名来自佛罗里达州立大学的研究生和夏威夷大学的两个博士后。