卫星测高确定全球海平面变化研究进展

Research Progress on Global Sea Level Change Determined by Satellite Altimetry

全球海平面变化是气候变化的指示器,其趋势与特征是预测预报海洋灾害、认识海洋动力变化过程、制定气候变化应对措施等的重要基础。卫星测高技术是目前高效确定高精度全球海平面变化的关键技术。近30年来,利用卫星测高技术在现今和长期全球海平面变化趋势与空间特征方面取得了众多研究成果。对国际上利用卫星测高技术确定全球海平面变化的相关研究进展进行了梳理,包括卫星测高技术确定的1993年至今的全球平均海平面变化速率与加速度和高分辨率格网全球海平面变化,以及联合卫星测高和多源海洋数据确定的长期高分辨率格网全球海平面变化,并结合卫星测高技术的未来发展对全球海平面变化研究进行了展望。

Global sea level change is an indicator of climate change,whose trend and characteristics are essential foundations for predicting and forecasting marine disasters,understanding ocean dynamics processes,and formulating climate change response measures. Satellite altimetry is the key technology for efficiently estimating high-precision global sea level change nowadays. Over the past three decades,numerous research results have been achieved in terms of the trend and the spatial characteristics of present-day and long-term global sea level change. We provide a review of the research progress on global sea level change determined by satellite altimetry technology,including the change rate and acceleration of global mean sea level change and the high-resolution gridded global sea level change from 1993 to the present,as well as the longterm high-resolution gridded global sea level change via joint effort of satellite altimetry and multi-source ocean data. We prospect the research of global sea level change together with the future developments of satellite altimetry technology.