A Review of Marine Gravity Field Recovery from Satellite Altimetry

Marine gravity field recovery relies heavily on satellite altimetry. Thanks to the evolution of altimetry missions and improvements in altimeter data processing methods, marine model has been prominently enhanced accuracy resolution. However, high-accuracy high-resolution from remains particularly challenging. We provide an overview advances for recovery, focusing impact factors available models altimetric construction. Firstly, contribution are reviewed, existing future missions. Secondly, because methods great significance when obtaining high-quality sea surface height observations, these improved summarized analyzed, especially coastal In addition, problems be resolved highlighted. Thirdly, characteristics including inverse Stokes formula, Vening Meinesz Laplace’s equation, least squares collocation. Furthermore, latest global introduced, use methods. The performance is also evaluated by shipboard measurements. root mean square difference between National Centers Environmental Information approximately 5.10 mGal low-middle latitude regions, which better than result high-latitude regions. areas, still needs further improved, within 40 km coastline. Meanwhile, SDUST2021GRA derived Shandong University Science Technology team exhibited exciting performance. Finally, challenges discussed.