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

我们的目标是通过磁力和重力卫星观测的联合反演来估计海洋运输时间序列。在此，我们将重点关注大尺度的海洋环流。得出这些输运将极大地改善目前对全球海洋质量和热量输运的估计。我们将得出主要洋流系统的趋势，如南极绕极流(ACC)和墨西哥湾流，即大西洋子午线翻转环流(AMOC)的上北臂。我们将量化是否可以确定仍有争议的气候变化对当前实力的影响。此外，我们对海洋运输量的估计将被用作地球定向参数(EOP)的独立验证和基于测高的海洋运输量重新分析。最后，该项目将实现目前欧空局任务群的公开目标：识别和利用海洋环流的磁性特征。

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.