نتایج جستجو برای: icesat

تعداد نتایج: 506  

2009
Brian Gunter B. Tapley

In this study, we present a comparison of coincident GRACE and ICESat data over Antarctica. The analysis focused on the secular changes over a 4-year period spanning from 2003 to 2007, using the recently reprocessed and publicly available data sets for both missions. The results show that the two independent data sets possess strong spatial correlations, but that there are several factors that ...

Journal: :Remote Sensing 2021

A decade-long pronounced increase in temperatures the Arctic, especially Barents Sea region, resulted a global warming hotspot over Svalbard. Associated changes cryosphere are consequence and lead to demand for monitoring of glacier changes. This study uses spaceborne laser altimetry data from ICESat ICESat-2 missions obtain ice elevation mass change rates between 2003–2008 2019. Elevation deri...

Journal: :Geophysical Research Letters 2005

Journal: :Geophysical Research Letters 2021

A series of traverses has been conducted for validation the National Aeronautics and Space Administration Ice, Cloud, land Elevation Satellite 2 (ICESat-2) on flat interior Antarctic ice sheet. Global Navigation System data collected three separate 88S Traverses intersect 20% ICESat-2 reference ground tracks have precisions better than ±7 cm biases less ?4 cm. Data from these were used to asses...

Journal: :Remote Sensing 2016
Nicholas A. Forfinski-Sarkozi Christopher E. Parrish

In 2018, the National Aeronautics and Space Administration (NASA) is scheduled to launch the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2), with a new six-beam, green-wavelength, photon-counting lidar system, Advanced Topographic Laser Altimeter System (ATLAS). The primary objectives of the ICESat-2 mission are to measure ice-sheet elevations, sea-ice thickness, and global biomass. Howe...

Journal: :Remote Sensing 2023

NASA’s Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) provides exceptional opportunities for characterizing the structure of ecosystems through acquisition along-track, three-dimensional observations. Focusing on canopy cover as a fundamental parameter assessing forest conditions, overall goal this study was to establish framework generating gridded 30 m product with ICESat-2. Specifical...

2008
Jinha Jung Melba M. Crawford

The Ice, Cloud and Land Elevation Satellite (ICESat) was launched January 13, 2003. The primary purpose of this mission is the determination of inter-annual and long-term changes in polar ice-sheet mass, the causes of changes in mass balance, and the impact of these changes on global sea level. In addition to these objectives, ICESat mission also enables precise measurement of land topography a...

2011
C. Nuth

There are an increasing number of digital elevation models (DEMs) available worldwide for deriving elevation differences over time, including vertical changes on glaciers. Most of these DEMs are heavily post-processed or merged, so that physical error modelling becomes difficult and statistical error modelling is required instead. We propose a three-step methodological framework for assessing a...

Journal: :Remote Sensing 2014
Craig Mahoney Natascha Kljun Sietse O. Los Laura Chasmer Jörg M. Hacker Christopher Hopkinson Peter R. J. North Jacqueline A. B. Rosette Eva van Gorsel

1 Department of Geography, College of Science, Swansea University, Singleton Park, Swansea, SA28PP, UK; E-mails: [email protected] (N.K.); [email protected] (S.O.L.); [email protected] (P.R.J.N.); [email protected] (J.A.B.R.) 2 Centre for Studies of Carbon Cycle and Climate Interactions (LUCCI), Department of Physical Geography and Ecosystem Science, Lund University, Lund,...

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