The Development of Sensors for Ocean Buoys: The Real-Time and Time Series Measurements of Dust, Reactive Iron and Seasalt Aerosols

这个海洋科学技术开发项目的重点是设计、建造和测试用于海上浮标上气溶胶元素分析的传感器系统。这些系统包括现场便携式x射线荧光光谱（FP-XRF）和铁气溶胶探测器（FeAD），后者使用光纤光谱法测量铁。主要目标是可以在无人值机的情况下测量来自海洋浮标的粉尘和活性铁（Fe）的气溶胶浓度的传感器。从浮标实时时间序列气溶胶数据中受益的研究领域包括：测量近海粉尘和污染物运输，矿物粉尘对海洋生物生产力的影响（铁假说），以及人为矿物气溶胶对地球辐射平衡和气候的作用。这是伍兹霍尔海洋研究所的科学家和工程师之间的一个合作项目，汇集了浮标技术和仪器、计算机软件开发和海洋地球化学方面的专业知识。鉴于气溶胶传感器从未从浮标上部署，该项目将涉及设计、建造和测试单个仪器，并通过软件将这些传感器集成到一个浮标系统中。台架和塔架测试之后，将在伍兹霍尔附近的一个系泊浮标上进行两个季节的现场测试。

9811891 Sholkovitz This ocean science technology development project focuses on the design, construction, and testing of sensor systems for the elemental analysis of aerosols on buoys at sea. These systems involve field portable X-Ray fluorescence spectroscopy (FP-XRF)and an Iron Aerosol Detector (FeAD) which uses fiber optic spectrometry to measure Fe. The primary objectives are sensors which can measure, in an unattended manner, the aerosol concentrations of dust and reactive iron (Fe) from ocean buoys. Research areas that would benefit from real-time time-series aerosol data from buoys include: measurement of off-shore dust and contaminants transport, effects of mineral dust on the ocean's biological productivity (the Fe Hypothesis), and the role of anthropogenic mineral aerosols on the Earth's radiation balance and climate. This is a collaborative project between scientists and engineers at the Woods Hole Oceanographic Institution, bringing together expertise in buoy technology and instrumentation, computer software development and marine geochemistry. Given that aerosol sensors have never been deployed from buoys, this project will involve designing, building and testing the individual instruments and integrating these sensors through software into a single buoy system. Bench and tower testing will be followed by two seasons of field testing on a moored buoy off Woods Hole.