Collaborative Research: Global Ocean Survey of Dissolved Iron and Aluminum and Aerosol Iron and Aluminum Solubility Supporting the Repeat Hydrography (CO2) Project

佛罗里达州立大学的一名科学家将与夏威夷大学和华盛顿大学的同事合作，从地表水和垂直剖面(12层深)收集一套溶解和颗粒样本，以及在重复水文二氧化碳巡航的选定航段期间收集大气气溶胶和雨水样本。投资促进机构计划参加以下四个航次：(1)2003年期间的北大西洋经向断面(20-25‘W)；(2)2004年期间30’N的太平洋纬向断面；(3)2005年南大西洋经向断面(20-25‘W)；以及(4)2005年南太平洋经向断面(150 W)。在这些巡航期间回收的样本将进行铁和铝的分析。此外，气溶胶样品将经过超纯水淋洗，以评估铁和铝的部分溶解度。这支PI团队还计划收集和归档经过过滤和未过滤的水样和气溶胶，供痕量金属和示踪剂领域的其他科学家分析。这项研究的主要目标是建立一个关于水和气溶胶样品中铁和铝浓度的广泛数据库，以限制全球和区域尘埃沉积模型，并确定大气铁沉积在将铁输送到世界主要海洋盆地的表层水中所起的作用。

ABSTRACTOCE-0223378OCE-0223397OCE-0223504A scientist from Florida State University in collaboration with colleagues from the University of Hawaii and the University of Washington will collect a suite of dissolved and particulate samples from surface waters and vertical profiles (12 depths), as well as atmospheric aerosol and rainwater samples during selected legs of the Repeat Hydrography CO2 cruises. The PIs plan to participate in the following four cruises: (1) the North Atlantic Ocean meridional section (20-25'W) during 2003; (2) the Pacific Ocean zonal section at 30'N during 2004; (3) the South Atlantic Ocean meridional section (20-25'W) in 2005; and (4) the South Pacific Ocean meridional section (150W) in 2005. Samples recovered during these cruises will be analyzed for Fe and Al. In addition, aerosol samples will be subjected to an ultrapure water leach to assess the fractional solubility of Fe and Al. This team of PIs also plans to collect and archive filtered and unfiltered water samples and aerosols for analysis by other scientists in the trace metal and tracer community. The primary objectives of this study is to generate an extensive database of Fe and Al concentrations in water and aerosol samples that can constrain global and regional dust deposition models and determine the role that atmospheric Fe depositions have in delivering Fe to surface waters in the major basins of the world's oceans.