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

一位来自佛罗里达州立大学的科学家与来自夏威夷大学和华盛顿大学的同事合作，将从表层沃茨和垂直剖面（12个深度）收集一套溶解和颗粒样品，以及在重复水文学CO2巡航的选定航段收集大气气溶胶和雨水样品。 计划参加的航游包括：（1）2003年的北大西洋纬向段（西经20至25 '）;（2）2004年的太平洋纬向段（北纬30'）;（3）2005年的南大西洋纬向段（西经20至25 '）;及（4）2005年的南太平洋纬向段（西经150'）。 此外，气溶胶样品将进行超纯水沥滤，以评估铁和铝的溶解度。该PI团队还计划收集和存档过滤和未过滤的水样和气溶胶，供痕量金属和示踪剂社区的其他科学家分析。 本研究的主要目标是产生一个广泛的数据库，铁和铝浓度的水和气溶胶样品，可以限制全球和区域的灰尘沉积模型，并确定大气铁沉积的作用，在提供铁的表面沃茨在世界海洋的主要盆地。

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.