This paper focuses on the Ice, Cloud and land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) data availability over the 2 million km Cerrado, the Brazilian central savanna biome and one of the world’s biodiversity hotspots. Overall, about 2.5 million laser shots, distributed along the seven years of ICESat operation (2003–2009) and comprising three major seasonal domains,...

Water level fluctuations of inland lakes are related to regional-scale climate changes, and reflect variations in evaporation, precipitation and glacier meltwater flowing into the lake area in its catchment. In this paper, Ice, Cloud and land Elevation Satellite (ICESat) altimeter data and Landsat imagery (2002–09) are used to estimate Nam Co lake (Nyainqentanglha range, Tibetan Plateau) water ...

The ICESat-2 Precision Orbit Determination (POD) system computes the precise position of laser altimeter instrument in inertial space, a measurement necessary for accurate geolocation individual photon surface returns. POD solutions are generated by reduction Global Positioning System (GPS) double-difference carrier phase observable residuals with NASA Goddard Space Flight Center's GEODYN softw...

The glaciers in Arctic Archipelago of Svalbard, located the hotspot global warming, are sensitive to climate change. assessment glacier mass balance Svalbard is one hotspots research. In this study, we use laser altimetry ICESat-2 data investigate elevation and change from 2019 2021 by a hypsometric approach. It shown that Svalbard-wide rate ?0.775 ± 0.225 m yr?1 2019–2021, corresponding ?14.84...

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...

Satellites are launched frequently to monitor the Earth’s dynamic surface processes. For example, Landsat legacy has thrived for past 50 years, spanning almost entire application spectrum of Earth Sciences. On other hand, fewer satellites with a single specific mission address pressing scientific questions, e.g., study polar icecaps and their response climate change using Ice Cloud Land Elevati...

250 words) 25 Uncertainty in the Pan-arctic Ice Ocean Modeling and Assimilation System (PIOMAS) 26 Arctic sea ice volume record is characterized. A range of observations and approaches, 27 including in-situ ice thickness measurements, ICESat retrieved ice thickness, and model 28 sensitivity studies, yields a conservative estimate for October Arctic ice volume 29 uncertainty of +/1.35x10 km and ...

The Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) was launched on September 15, 2018. It is the first photon-counting laser altimeter satellite, which of great significance for research into altimetry. ICESat-2 is, however, highly sensitive susceptible to environmental influences. In addition surface returns, a lot nonsurface photons are found in data. therefore, necessary study an effe...