Refined European sea level estimations by combining altimetry, tide gauges, hydrographic and other data sets with improved regional GIA modeling and tailored regional GRACE gravity field models (RESEL-GRACE)

我们的合作研究建议的目的是完善欧洲海平面的估计结合测高，验潮仪，ARGO浮标数据，水文和其他数据集与改进的区域GIA建模和定制的区域GRACE重力场模型。该CRP的部分目标包括直接从GRACE仪器数据推导出欧洲感兴趣的专门区域，特别是地中海和北海/芬诺斯堪的亚区域的区域平均和时变重力模型。这些区域模型将在整个GRACE使命期间进行计算，其推导将遵循与目前GFZ的标准全球月度EIGEN-GRACE 05 S模型相同的标准和惯例。利用多卫星测高数据，特别是Jason-1号、环境卫星、Jason-2号（拟于2008年发射）和SARAL/Altika（拟于2009年发射），更新地中海的平均和区域海平面变化率。通过使用新的和独立的GRACE重力测量来解释由于地球表面水团的重新分布而引起的水团对海平面的贡献。提高对北方冰川均衡调整的估计，并提高我们对该地区浅层地球结构和流变学的认识。地球-冰耦合模型和利用卫星重力数据约束冰川均衡调整过程的方法也可以并将用于地中海。

The aim of our collaborative research proposal is to refine European sea level estimations by combining altimetry, tide gauges, ARGO float data, hydrographic and other data sets with improved regional GIA modeling and tailored regional GRACE gravity field models. Partial objectives of this CRP include to derive regional mean and time-variable gravity models directly from GRACE instrument data for dedicated European regions of interest, in particular for the Mediterranean Sea and the North Sea/Fennoscandia region. These regional models will be computed for the full GRACE mission period, and their derivation will follow the same standards and conventions as currently adopted for GFZ’s standard global monthly EIGEN-GRACE05S models. To update the average and regional sea level rates in the Mediterranean Sea using multi satellite altimetry data, in particular Jason-1, Envisat, Jason-2 (to be launched in 2008) and SARAL/Altika (to be launched in 2009). To explain the water mass contribution to sea level by using new and independent GRACE measurements of gravity due to redistribution of water mass at the surface of the Earth. To improve estimates of glacial-isostatic adjustment in Northern Europe and to improve our knowledge of the shallow earth structure and rheology of the region. The coupled earth-ice model and the method to constrain the process of glacial-isostatic adjustment with satellite gravity data can and will be used for the Mediterranean as well.