利用多代卫星测高资料监测1993～2011年全球海平面变化

基金项目: 国家863计划资助项目(2009AA121402);;国家自然科学基金资助项目(41004007,41074014)

详细信息

Monitoring Global Sea Level Change from 1993 to 2011 Using TOPEX and Jason Altimeter Missions

¹ School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;² Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University, 129 Luoyu Road,Wuhan 430079,China

Funds: 国家863计划资助项目(2009AA121402);;国家自然科学基金资助项目(41004007,41074014)

摘要: 联合多代测高卫星T/P、Jason-1/2海面高数据和验潮站数据,确定了各卫星高度计的长期低频漂移,建立了统一的卫星测高海面高观测值,研究了1993～2011年间全球平均海平面的变化。结果表明,近18a全球平均海平面以3.12±0.4mm·a-1的速率上升,其中,海平面年际信号与ENSO事件表现出较强的相关性。
- 卫星测高 /
- 验潮站 /
- 全球海平面变化
Abstract: Multi-satellite altimetry has provided a wealth of data for measuring the long-term sea level change,T/P,Jason-1 and Jason-2 construct a seamless record of global sea level change from 1993 to present.We present the results of our calibration activities,including data comparisons during the tandem period of the missions,during which we resolve the relative bias between the missions,as well as comparisons to independent tide gauge data.When the entire record is assembled,global mean sea level change from 1993-2011 is 3.12±0.4 mm·a-1,and interannual variation is strongly correlated to El Nio phenomenon.
- satellite altimetry /
- tide gauge /
- global mean sea level