Results 41 to 50 of about 431,526 (216)

Combining multisource satellite data to estimate storage variation of a lake in the Rift Valley Basin, Ethiopia

International Journal of Applied Earth Observations and Geoinformation, 2020
Integration of remote sensing data sets from multiple satellites is tested to simulate water storage variation of Lake Ziway, Ethiopia for the period 2009-2018. Sixty Landsat ETM+/OLI images served to trace temporal variation of lake surface area using a
Wegayehu Asfaw, Alemseged Tamiru Haile, Tom Rientjes   +2 more
doaj   +1 more source

A Coastal Experiment for GNSS-R Code-Level Altimetry Using BDS-3 New Civil Signals

Remote Sensing, 2021
High temporal and spatial resolutions are the key advantages of the global navigation satellites system-reflectometry (GNSS-R) technique, while low precision and instabilities constrain its development.
Fan Gao, Tianhe Xu, Xinyue Meng, Nazi Wang, Yunqiao He, Baojiao Ning   +5 more
doaj   +1 more source

Backscattering signatures at Ka, Ku, C and S bands from low resolution radar altimetry over land

Advances in Space Research, 2020
Radar backscattering coefficients from synthetic aperture radars and scatterometers are commonly used to characterize the land surface properties and monitor their temporal evolution.
F. Frappart, F. Blarel, F. Papa, C. Prigent, E. Mougin, P. Paillou, F. Baup, P. Zeiger, E. Salameh, J. Darrozes, L. Bourrel, F. Rémy   +11 more
semanticscholar   +1 more source

Satellite altimetry and operational oceanography: from Jason-1 to SWOT [PDF]

Ocean Science
The development and evolution of satellite altimetry and operational oceanography are very closely linked. By providing all weather, global, and real-time observations of sea level, a key variable to constrain ocean analysis and forecasting systems ...
P.-Y. Le Traon, P.-Y. Le Traon, G. Dibarboure, J.-M. Lellouche, M.-I. Pujol, M. Benkiran, M. Drevillon, Y. Drillet, Y. Faugère, E. Remy   +9 more
doaj   +1 more source

Observing the Near‐Surface Properties of the Greenland Ice Sheet

Geophysical Research Letters, 2023
Spaceborne radar altimetry over ice sheets has exclusively focused on assessing volume changes through changes in surface elevation. For use in mass balance calculations, these measurements are supplemented with surface property information derived from ...
K. M. Scanlan, A. Rutishauser, S. B. Simonsen   +2 more
doaj   +1 more source

Accuracy Evaluation of Altimeter-Derived Gravity Field Models in Offshore and Coastal Regions of China

Frontiers in Earth Science, 2021
Satellite radar altimetry has made unique contributions to global and coastal gravity field recovery. This paper starts with a general introduction followed by the progress of satellite radar altimetry technology.
Qianqian Li, Qianqian Li, Lifeng Bao, Lifeng Bao, Yong Wang, Yong Wang   +5 more
doaj   +1 more source

Synergy between in situ and altimetry data to observe and study Northern Current variations (NW Mediterranean Sea) [PDF]

Ocean Science, 2019
During the last 15 years, substantial progress has been achieved in altimetry data processing, now providing data with enough accuracy to illustrate the potential of these observations for coastal applications.
A. Carret, F. Birol, C. Estournel, B. Zakardjian, P. Testor   +4 more
doaj   +1 more source

Assessment of DUACS Sentinel-3A Altimetry Data in the Coastal Band of the European Seas: Comparison with Tide Gauge Measurements

Remote Sensing, 2020
The quality of the Data Unification and Altimeter Combination System (DUACS) Sentinel-3A altimeter data in the coastal area of the European seas is investigated through a comparison with in situ tide gauge measurements.
Antonio Sánchez-Román, Ananda Pascual, Marie-Isabelle Pujol, Guillaume Taburet, Marta Marcos, Yannice Faugère   +5 more
doaj   +1 more source

Sentinel-3 radar altimetry for river monitoring – a catchment-scale evaluation of satellite water surface elevation from Sentinel-3A and Sentinel-3B

Hydrology and Earth System Sciences, 2020
. Sentinel-3 is the first satellite altimetry mission to operate both in synthetic aperture radar (SAR) mode and in open-loop tracking mode nearly globally.
C. Kittel, Liguang Jiang, C. Tøttrup, P. Bauer‐Gottwein   +3 more
semanticscholar   +1 more source

Lake and reservoir volume variations in South America from radar altimetry, ICESat laser altimetry, and GRACE time-variable gravity

Advances in Space Research, 2020
Thanks to 25-years of radar altimetry measurements from TOPEX/POSEIDON, Jason 1, 2 and 3, ENVISAT and others, water level changes of major lakes and rivers can be measured regularly, remotely, with unprecedented precision, facilitating monitoring of ...
C. Carabajal, J. Boy
semanticscholar   +1 more source