China’s first optical stereo mapping satellite with a sub-meter resolution, GaoFen-7 (GF-7), launched in November 2019, shows significant potential for providing high-resolution topographic and geomorphic data quantitative research on active tectonics. However, no studies have evaluated the capability of GF-7-generated digital elevation model (DEM) quantitatively studying This study aimed to va...

Abstract. The Thwaites Eastern Ice Shelf (TEIS) buttresses the eastern grounded portion of Glacier through contact with a pinning point at its seaward limit. Loss this ice shelf will promote further acceleration Glacier. Understanding dynamic controls and structural integrity TEIS is therefore important to estimating Thwaites' future sea-level contribution. We present ? 20-year record change on...

In this study we present and validate a simple empirical method to obtain bathymetry profiles using the geolocated photon data from Ice, Cloud, Land Elevation Satellite-2 (ICESat-2) mission, which was launched by NASA in September 2018. The satellite carries Advanced Topographic Laser Altimeter System (ATLAS), is lidar that can detect single photons calculate their bounce point positions. ATLAS...

The accurate knowledge of sea ice parameters, including sea ice thickness and snow depth over the sea ice cover, are key to both climate studies and data assimilation in operational forecasts. Large-scale active and passive remote sensing is the basis for the estimation of these parameters. In traditional altimetry or the retrieval of snow depth with passive microwave sensing, although the sea ...

Seasonal snow melt dominates the hydrologic budget across a large portion of globe. Snow accumulation and vary over broad range spatial scales, preventing accurate extrapolation sparse in situ observations to watershed scales. The lidar onboard Ice, Cloud, land Elevation, Satellite (ICESat-2) was designed for precise mapping ice sheets sea ice, here we assess feasibility depth-mapping using ICE...

Abstract. In the Arctic, multi-year sea ice is being rapidly replaced by seasonal ice. Baffin Bay, situated between Greenland and Canada, part of zone. this study, we present a long-term multi-mission assessment (2003–2020) spring thickness in Bay from satellite altimetry charts. Sea within calculated Envisat, ICESat, CryoSat-2, ICESat-2 freeboard estimates, alongside proxy chart stage developm...