Joint inversion of gravimetric and electromagnetic satellite observations to infer global time series of oceanic volume transport (GREMLIN)

我们的目标是估计海洋运输时间序列的磁和重力卫星观测的联合反演。在此，我们将重点讨论大尺度海洋环流。导出这些传输将至关重要地改善目前的全球海洋质量和热量传输的估计。我们将得到主要的电流系统的趋势，如南极绕极流（ACC）和墨西哥湾流，即，大西洋经向翻转环流（AMOC）的北向上臂。我们将量化，如果仍然有争议的气候变化相关的影响，目前的实力可以确定。此外，我们对海洋运输的估计将被用作地球定向参数（EOP）和基于高度的海洋运输再分析的独立验证。最后，该项目将实现欧空局当前使命Swarm的公开目标：识别和利用海洋环流的磁特征。

We aim at the estimation of oceanic transport time series by a combined inversion of magnetic and gravimetric satellite observations. Hereby, we will focus on the large-scale oceanic circulation. Deriving these transports will crucially improve current estimates of global oceanic mass and heat transports. We will derive trends of major current system as the Antarctic Circumpolar Current (ACC) and the Gulf Stream, i.e., the upper northward arm of the Atlantic Meridional Overturning Circulation (AMOC). We will quantify if still debated climate change related impacts on the current strength can be identified. Furthermore, our estimates of the oceanic transports will be used as independent validation of Earth orientation parameters (EOP) and altimetry-based oceanic transport reanalyzes. Finally, the project will fulfill the open objective of the current ESA mission Swarm: identification and exploitation of magnetic signatures from the oceanic circulation.