Influence of Wind Waves on Air-Sea Gas Transfer

尽管海气交换对环境强迫的依赖性已经引起了人们的极大关注，但气体传输速度与风速的经验关系仍然被广泛使用。实验数据清楚地证明这是不够的，但物理上更相关的参数，特别是风浪场，往往无法在实验中测量。一种新的光学仪器的测量波已经开发出来，这使我们能够测量波场参数在相同的足迹作为气体交换的主动热成像首次。我们将在2012年12月利用FS Meteor进行的SOLAS-秘鲁（M91）巡航中增加对气体交换的重要缺失参数-波场和微气象学统计数据-的测量，目的是用基于物理的参数化取代目前使用的经验性气体交换/风速关系。

Even though significant attention has been dedicated to the investigation of the dependence of air-sea gas exchange on environmental forcing, empirical relations of gas transfer velocities with wind speed are still widely used. Experimental data clearly proves this to be insufficient, but physically more relevant parameters, especially of the wind-wave field, often times could not be measured in experiments. A novel optical instrument for the measurement of waves has been developed, which allows us to measure wave field parameters at the same footprint as gas exchange by active thermography for the first time. We will add measurements of important missing parameters for gas exchange -- statistics of the wave field and micro-meteorology -- to the SOLAS-Peru (M91) cruise on FS Meteor in December 2012 with the goal to replace currently used empirical gas exchange / wind speed relations with a physically-based parametrization.