Contribution of the steric and ocean mass change to the global sea level change since 2003

摘要

The contribution of the water mass change and the steric change of the ocean to the long term global mean sea level trend during 2003-2011 is analyzed in this paper, basing on the data of multiple satellite altimeter, GRACE gravity satellite and the Ishii (2012) temperature and salinity dataset. A steady rising rate of the global mean sea level since 1993 is found with little change in the 2003-2011. The steric change of the water in the layer of 700-1500 m is almost as important as the upper 700 m, the upper 1500 m waters contribute 18% to the global mean sea level rise and the contribution of the mass change over the ocean is 21%.