Deeper Ocean Remote Sensing and Deeper Ocean Response to Global Climate Change
报告人：Dr. Xiaohai Yan
报告人单位：UD Center for Remote Sensing, University of Delaware
报告时间：2013年10月17日（星期四）10:00
报告地点：科研楼303会议室
中深层海洋对全球气候变化的响应和调控－从中深层海洋遥感谈起
(English: Deeper Ocean Remote Sensing and Deeper Ocean Response to Global Climate Change)
Abstract:
Recent studies have shown a widespread warming in the world's deep ocean that reflects the response of the deeper ocean to the global climate change. It may have significantly contributed to the global sea level rise over the past decades, and, in turn,to modulate the Earth’s climate. However,dynamic processes that control such low-frequency changes remain elusive, which is partly due to a lack of focused studies in the Global Change Program. Changes in the formation rates and/or the characteristics of intermediate and deep water masses and associated overturning circulation patterns have been suggested but need to be further investigated together with other big efforts in the Global Change Program. Satellite remote sensors cannot see far beneath the surface layers of the ocean. Yet many important ocean processes and features are located well below the sea surface and at considerable depths. Deeper ocean remote sensing is becoming even more important given that the deeper ocean may be responding to climate variability and change more effectively than we ever thought. The objective of this talk is to provide an overview and some new results of deeper ocean remote sensing and other studies,which enable us to characterize subsurface and deeper ocean processes and features and their implications for the climate. We also propose that more attentions should be given to the deeper ocean remote sensing and deeper ocean response to/and modulation of the climate in the global change studies.
最近的研究表明:由于对全球气候变化的响应，大范围的全球海洋中深层水变暖。这可能是近几十年来海平面上升的重要原因，反过来它也会对全球气候进行调控。然而由于缺乏相关全球变化科学计划的深入研究，海洋中深层水低频变化的动力过程一直不是很清楚。近年来中深层水变异的速率及特征，以及相关翻转流的形态变迁受到重视并逐渐加入全球变化项目中。遥感不能直接观测海表以下，然而很多重要的海洋过程及现象存在于海表以下相当的深度内。由于深海可能对气候变化有响应并且比我们想像的更快，因此深海遥感的重要性也更加明显。本报告目的是对深海遥感相关研究的前沿领域进行综述，这些研究有助于我们了解海洋次表层及以下的动力过程，以及这些过程与气候变化的相互关系。我们也建议在全球变化研究中对深海遥感，深海与气候变化的关系给予更多关注。
