The Sea Level Change from the Antarctic Ice Sheet Based on Grace

The Antarctic equivalent water height time series and the inter-annual trend on a 1 degrees X 1 degrees grid are inferred. Amundsen Sea Embayment in West Antarctic shows apparent negative rates, exceeding -80 mm/a, while Antarctic Peninsula with smaller negative rate and Enderby Land in East Antarctic with positive one. The 5-year equivalent water volume variation trends, in Antarctica, East Antarctica and West Antarctica, are -78 +/- 37 km(3)/a, -3 +/- 46 km(3)/a and -75 +/- 50 km(3)/a, and the corresponding contribution to sea level change are 0.21 +/- 0.1 mm/a, 0.008 +/- 0.127 mm/a and 0.2 +/- 0.14 mm/a, respectively, from July 2002 to September 2007. The results are in accord with recent results from Ramillien (2006) and Velicogna (2006). The PGR (Post Glacial Rebound) model is still the key factor to the study of the Antarctic ice sheet with GRACE.