Quantifying Atmospheric Iron Properties over West Antarctic Peninsula

这项研究试图进一步量化大气铁进入稀少采样的南大洋(SO)，特别是在西南极半岛(WAP)附近和德雷克海峡邻近大陆架水域的输入。这是一个典型的高营养、低叶绿素区域，表面痕量金属和初级生产力数据暗示了铁的限制。WAP在南半球夏季具有高生产力的特点，此时可能处于北方沙尘(风成铁)输入的路径上，或者受到冰川和现代海冰源积累的升高Fe的融化流入。主要的科学问题是：(1)大气Fe对SO的营养循环和生态系统动力学有多大贡献？(2)WAP气候变暖如何影响海洋大气的气溶胶成分。南大洋的初级生产力是了解海洋吸收二氧化碳等人为温室气体的关键。

The research seeks to further quantify the input of atmospheric Fe into the sparsely sampled Southern Ocean (SO), specifically in the vicinity of the West Antarctic Peninsula (WAP) and adjacent continental shelf waters in the Drake Passage. This is typically a high nutrient low chlorophyll region where surface trace metal and primary productivity data are suggestive of Fe limitation. The WAP is characterized by high productivity in the austral summer, and at this time may be in the path of northern dust (aeolian Fe) input or subject to melt influx of elevated Fe accumulated from glacial and present-day sea ice sources.Primary scientific questions are: (1) to what extent does atmospheric Fe contribute to nutrient cycles and ecosystem dynamics in the SO? (2) How is warming climate occurring in the WAP affecting the aerosol composition of the maritime atmosphere. The primary productivity of the Southern Ocean is key to understanding oceanic uptake of anthropogenic greenhouse gases such as carbon dioxide.