A Model-Data Synthesis Study of the Marine Iron Cycle

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。加州大学欧文分校（UCI）的研究人员将开发一个模型，该模型将利用项目合作者在最近的实地活动中对溶解的铁和铝浓度以及气溶胶铁和铝溶解度的广泛现场观察。目标是提高对铁在海洋中的行为的理解，铁是海洋植物生产中重要的，但往往是限制性的微量营养素。这项工作特别建立在先前的工作基础上，这些工作强调了大气和大陆边缘海洋沉积物作为海洋溶解铁来源的重要性。最近CLIVAR现场活动的新数据集可用于测试、验证和改进许多模型参数，包括沉积铁源、清除和生物吸收。更广泛的影响：更好地了解铁循环及其与碳循环的联系，对于了解海洋铁输入如何随气候变化而改变具有重要意义。同样，对铁循环的更好把握也可以让我们了解过去的气候历史。这项工作将吸引UCI的学生，并将为GEOTRACES项目的目标做出贡献。在这项工作中开发的模型将作为社区气候系统模型的一部分提供给社区。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Researchers at the University of California Irvine (UCI) will develop a model that will utilize the extensive field observations of dissolved Fe and Al concentrations and aerosol Fe and Al solubility that have been made on recent field campaigns by project collaborators. The goal is to improve upon the understanding of the behavior of iron in the ocean, which is an important, and often limiting micronutrient for ocean plant production. This work specifically builds upon prior efforts that have highlighted the importance of atmospheric and continental margin marine sediments as sources of dissolved iron to the oceans. The availability of new data sets from the recent CLIVAR field campaigns can be used to test, validate and improve upon a number of model parameters including the sedimentary iron source, scavenging, and biological uptake. Broader Impacts: An improved understanding of the iron cycle and its links to the carbon cycle are important for understanding of how oceanic iron inputs might be altered with climate change. Likewise, an improved grasp of the iron cycle could inform our knowledge of past climate history as well. The work will engage students at UCI and will contribute to the goals of the GEOTRACES program. The model that will be developed during this work will be made available to the community as part of the Community Climate System Model.