Development and application of geochemical and isotopic tracers to investigate the impact of oceanic processes on climate change.

人类活动对环境的影响日益惊人，我们必须提高我们的预测能力，以决定最佳的社会反应。在这些担忧中，最重要的是目前人为二氧化碳的增加及其对气候的影响。由于自然循环，大气中的二氧化碳和气候在过去也发生了变化，海洋在过去的这些变化中发挥了主要作用。大气和海洋之间的交换是在一定时间尺度上调节大气CO2水平的主要因素之一，海洋环流是地球表面太阳热量再分配的重要因素。如今，海洋是人为排放二氧化碳的主要储存库，人们担心深水循环即将发生的变化可能会影响未来的气候演变。

Human activities are having an increasingly alarming impact on the environment and we must improve our predictive capabilities to decide on optimal societal responses. Foremost among these concerns are the current rise in anthropogenic CO2 and its effect on climate. Atmospheric CO2 and climate have also changed in the past as a result of natural cycles and the oceans have played a major role in these past variations. Exchange between the atmosphere and the ocean is one of the main factors regulating the level of atmospheric CO2 on a range of time scales and ocean circulation is an important contributor to the redistribution of solar heat on the surface of the planet. Today, the ocean is the major sink for anthropogenic CO2 and concerns have been raised that impending changes in deep water circulation could affect the future evolution of climate.