摘要
利用2005—2009年共60个月的卫星测高、GRACE数据计算全球66°S^66°N比容海平面变化,同时利用Argo数据计算得到该区域的比容海平面变化,结果可知比容海平面具有明显的周年变化。比较不同方法得到的比容海平面变化发现二者在整体趋势上较为一致,但局部也存在着差异。联合卫星测高、GRACE和利用Argo数据得到2005—2009年比容海平面变化振幅分别为10.5 mm和4.3 mm,长期变化趋势分别为1.63 mm/a和0.32mm/a。
The steric sea level budge of the 65°S^65°N is calculated using the satellite altimetry,GRACE and Argo data from Jan 2005 to Dec 2009.An obvious annual signal can be seen from the results.The steric sea levels calculated from two different method agree well in most regions,while poor in some regions.The phase of steric sea level budge derived from satellite altimetry and GRACE data is 10.5 mm,and from Argo data is 4.3 mm.The trend of steric sea level derived from satellite altimetry shows that GRACE data and Argo data are 1.63 mm/year and 0.32 mm/year.
作者
李洪超
文汉江
师军良
LI Hongchao;WEN Hanjiang;SHI Junliang(Yellow River Conservancy Technical Institute,Kaifeng 454003,China;Chinese Academy of Surveying and Mapping,Beijing 100830,China)
出处
《测绘工程》
CSCD
2018年第6期10-13,18,共5页
Engineering of Surveying and Mapping
基金
黄河水利职业技术学院校内基金资助项目(2015KXJS007)
