Results 1 to 10 of about 313 (137)

Assessment of the global Copernicus, NASADEM, ASTER and AW3D digital elevation models in Central and Southern Africa [PDF]

Geo-Spatial Information Science
Validation studies of global Digital Elevation Models (DEMs) in the existing literature are limited by the diversity and spread of landscapes, terrain types considered and sparseness of groundtruth.
Jon P. Mills, Julian L. Smit, Maria Valasia Peppa   +2 more
exaly   +15 more sources

Regional “Bare-Earth” Digital Terrain Model for Costa Rica Based on NASADEM Corrected for Vegetation Bias

Remote Sensing, 2022
A large percentage of the Costa Rican territory is covered with high evergreen forests. In order to compute a 1″ Bare-Earth Digital Terrain Model (DTM) for Costa Rica CRDTM2020, stochastic Vegetation Bias (VB) was reduced from the 1″ NASADEM, Digital ...
Chris Rizos
exaly   +5 more sources

Quantifying Geodetic Mass Balance of the Northern and Southern Patagonian Icefields Since 1976 [PDF]

Frontiers in Earth Science, 2022
Southern Andean glaciers contribute substantially to global sea-level rise. Unfortunately, mass balance estimates prior to 2000 are limited, hindering our understanding of the evolution of glacier mass changes over time.
Morgan McDonnell, Summer Rupper, Richard Forster   +2 more
doaj   +11 more sources

Vertical accuracy assessment of freely available global DEMs (FABDEM, Copernicus DEM, NASADEM, AW3D30 and SRTM) in flood-prone environments

International Journal of Digital Earth
Flood models rely on accurate topographic data representing the bare earth ground surface. In many parts of the world, the only topographic data available are the free, satellite-derived global Digital Elevation Models (DEMs).
Simon Jones, Karin Reinke
exaly   +7 more sources

Vertical Accuracy of Freely Available Global Digital Elevation Models (ASTER, AW3D30, MERIT, TanDEM-X, SRTM, and NASADEM) [PDF]

Remote Sensing, 2020
Freely available global digital elevation models (DEMs) are important inputs for many research fields and applications. During the last decade, several global DEMs have been released based on satellite data.
Evelyn Uuemaa, Merle Muru, Bruno Montibeller   +2 more
exaly   +7 more sources

Quantification of global Digital Elevation Model (DEM) – A case study of the newly released NASADEM for a river basin in Central Vietnam

Journal of Hydrology: Regional Studies, 2023
Study region: Lai Giang River basin, Central Vietnam Study focus: The Digital Elevation Models (DEM) is essential in hydrological modeling and water cycle understanding.
Venkat Lakshmi, John D Bolten, Manh-Hung Le   +2 more
exaly   +4 more sources

Conformity of the NASADEM_HGT and ALOS AW3D30 DEM with the Altitude from the Brazilian Geodetic Reference Stations: A Case Study from Brazilian Cerrado [PDF]

Sensors, 2021
The Brazilian Cerrado (tropical savanna) is the second largest biome in South America and the main region in the country for agricultural production.
Edson Eyji Sano, Édipo Henrique Cremon, Manuel Ferreira   +2 more
exaly   +4 more sources

Glacier mass-balance estimates over High Mountain Asia from 2000 to 2021 based on ICESat-2 and NASADEM

Journal of Glaciology, 2023
High Mountain Asia (HMA) glaciers are critical water reserves for montane regions, which are readily influenced by climate change. The glacier mass balance during 2000–2021 over HMA was estimated by comparing the elevations from ICESat-2 and the NASADEM.
Yubin Fan, Chang-Qing Ke, Xiaobing Zhou, Xiaoyi Shen, Xuening Yu, Drolma Lhakpa   +5 more
doaj   +2 more sources

Extra Climate Benefits From Afforestation Due to Reduced Forest Fragmentation in China. [PDF]

Adv Sci (Weinh)
Afforestation in China reduced forest fragmentation in 2015, transforming 51.8 M ha of edge forests into interior forests. This enhanced carbon sequestration (1.4±0.2 Pg CO2e, a cooling biogeochemical effect), while reduced albedo (−0.9 Pg CO2e, a warming biophysical effect) partially offset the gain, yielding a net extra climate benefit of ...
Meng N, Li W, Ciais P, Brandt M, Tong X, Yang Y, Shen G, Du W, Zhu L, Leng Y, Sun M, Han M, Zhang X, Zhang J, Wang N, Tong D, Wu C, Dong W, Tao S, Pan B.   +19 more
europepmc   +2 more sources

NASADEM GLOBAL ELEVATION MODEL: METHODS AND PROGRESS [PDF]

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 2016
NASADEM is a near-global elevation model that is being produced primarily by completely reprocessing the Shuttle Radar Topography Mission (SRTM) radar data and then merging it with refined ASTER GDEM elevations.
Marc Simard, S Hensley
exaly   +2 more sources