Accurate determination of dynamic topography (DT) is expected to quantify a realistic sea surface with respect its vertical datum and in identifying sub-mesoscale features ocean dynamics. This study explores method that derives DT by using satellite altimetry (SA) conjunction high-resolution marine geoid model. To assess the method, was computed along-track SA from Sentinel- 3A (S3A), Sentinel-...

Abstract. This study focuses on the determination and validation of a new global mean sea surface (MSS) model, named Shandong University Science Technology 2020 (SDUST2020), with grid size 1?×1?. model was established 19-year moving average method fused multi-satellite altimetry data over 27-year period (from January 1993 to December 2019). The HaiYang-2A, Jason-3, Sentinel-3A were first ingest...

A methodology to estimate the discharge along rivers, even poorly gauged ones, taking advantage of water level measurements derived from satellite altimetry is proposed. The procedure is based on the application of the Rating Curve Model (RCM), a simple method allowing for the estimation of the flow conditions in a river section using only water levels recorded at that site and the discharges o...

We present sea level observations derived from the analysis of Signal-to-Noise Ratio (SNR) data recorded at five coastal GPS sites. These sites are located in different regions around the world, both in the northern and the southern hemisphere, in different multipath environments, from rural coastal areas to busy harbors, and experience different tidal ranges. The recorded SNR data show periodi...

Abstract. Ocean mass change is one of the main drivers present-day sea-level (SLC). Also known as barystatic SLC, ocean caused by exchange freshwater between land and ocean, such melting continental ice from glaciers sheets, variations in water storage. While many studies have quantified contribution to global mean fewer works looked into regional changes. This study provides an analysis patter...

In the Congo Basin, the elevated vulnerability of food security and the water supply implies that sustainable development strategies must incorporate the effects of climate change on hydrological regimes. However, the lack of observational hydro-climatic data over the past decades strongly limits the number of studies investigating the effects of climate change in the Congo Basin. We present th...

Sea-level rise is an important indicator of ongoing climate change and well observed by satellite altimetry. However, observations from conventional altimetry degrade at the coast where regional sea-level changes can deviate open-ocean impact local communities. With 2018 launch laser altimeter onboard ICESat-2, new high-resolution ice, land, ocean elevations are available. Here we assess potent...