Chemical Mapping of the Sea-Surface Microlayer: A System for Measurement of Spatial and Temporal Variations in Composition

海面微层在海-气相互作用中起着重要的作用，特别是在调节热量、质量和动量的交换方面。调制的强度取决于微层膜的弹性，而弹性又取决于膜的化学成分。在这个项目中，将开发一个近乎实时绘制海洋表面微层化学图的系统。水面撇油设备将连接到小型质谱仪，以便从仪器平台或小船部署在海上。这一组合有望提供有关微层的化学质谱学数据，分辨率为几分钟。首席调查员预计，这一仪器将首次能够在与海-气界面物理有关的时间尺度上看到微层的化学性质的细节。

ABSTRACTOCE-9811279The sea surface microlayer plays an important role in air-sea interactions, especially in modulating the exchange of heat, mass, and momentum. The intensity of the modulation depends on the elasticity of the microlayer film, which in turn depends upon the chemical composition of the film. In this project a system will be developed for mapping the chemistry of the sea surface microlayer in near-real time. A surface skimming apparatus will be linked to a small mass spectrometer for deployment at sea from an instrument platform or small boat. The combination is expected to provide chemical mass spectral data about the microlayer with a resolution of of several minutes. The principal investigator expects that this instrumentation will deliver for the first time the ability to see details of the chemical nature of the microlayer on a time scale relevant to the physics of the sea-air interface.