Results 11 to 20 of about 730 (175)

Contribution of a Wide-Swath Altimeter in a Shelf Seas Assimilation System: Impact of the Satellite Roll Errors [PDF]

Journal of Atmospheric and Oceanic Technology, 2008
Abstract The authors investigate the potential qualitative improvement brought by wide-swath, interferometry-based ocean altimetry measurements with respect to classical nadir altimeters in a coastal/shelf data assimilation system. In addition, particular attention is paid to roll errors, which could significantly reduce the expected ...
Matthieu Le Hénaff, Pierre de Mey, Baptiste Mourre   +2 more
exaly   +4 more sources

4DVarNet-SSH: end-to-end learning of variational interpolation schemes for nadir and wide-swath satellite altimetry [PDF]

Geoscientific Model Development, 2023
The reconstruction of sea surface currents from satellite altimeter data is a key challenge in spatial oceanography, especially with the upcoming wide-swath SWOT (Surface Water and Ocean and Topography) altimeter mission.
M. Beauchamp, Q. Febvre, H. Georgenthum, R. Fablet   +3 more
doaj   +2 more sources

Quantifying Multifrequency Ocean Altimeter Wind Speed Error Due to Sea Surface Temperature and Resulting Impacts on Satellite Sea Level Measurements

Remote Sensing, 2023
Surface wind speed measurements from a satellite radar altimeter are used to adjust altimeter sea level measurements via sea state bias range correction.
Ngan Tran, Douglas Vandemark, François Bignalet-Cazalet, Gérald Dibarboure   +3 more
doaj   +2 more sources

Sea surface height measuring using InSAR altimeter

Geodesy and Geodynamics, 2017
Satellite altimetry has been widely used in measuring ocean topography from space. The conventional altimeter system is the nadir radar altimeter system which has the limitations of one-dimensional measurement and is unable to get both high temporal and ...
Xiaohong Sui, Running Zhang, Falin Wu, Yang Li, Xiaoyun Wan   +4 more
doaj   +2 more sources

Calibration of an Airborne Interferometric Radar Altimeter over the Qingdao Coast Sea, China

Remote Sensing, 2020
Calibration/Validation (Cal/Val) of satellite altimeters is fundamental for monitoring onboard sensor performance and ensuring long-term data quality.
Lei Yang, Yongsheng Xu, Xinghua Zhou, Lin Zhu, Qiufu Jiang, Hanwei Sun, Ge Chen, Panlong Wang, Stelios P. Mertikas, Yanguang Fu, Qiuhua Tang, Fangjie Yu   +11 more
doaj   +3 more sources

Preliminary Evaluation and Correction of Sea Surface Height from Chinese Tiangong-2 Interferometric Imaging Radar Altimeter

Remote Sensing, 2020
In this study, we performed preliminary comparative evaluation and correction of two-dimensional sea surface height (SSH) data from the Chinese Tiangong-2 Interferometric Imaging Radar Altimeter (InIRA) with the goal of advancing its retrieval. Data from
Lin Ren, Jingsong Yang, Xiao Dong, Yunhua Zhang, Yongjun Jia   +4 more
doaj   +2 more sources

Wide-Swath Altimetric Satellite Data Assimilation With Correlated-Error Reduction

Frontiers in Marine Science, 2020
For decades now, satellite altimetric observations have been successfully integrated in numerical oceanographic models using data assimilation (DA). So far, sea surface height (SSH) data were provided by one-dimensional nadir altimeters.
Sammy Metref, Emmanuel Cosme, Florian Le Guillou, Julien Le Sommer, Jean-Michel Brankart, Jacques Verron, Jacques Verron   +6 more
doaj   +2 more sources

On the Approximation of Precision Matrices for Wide-Swath Altimetry

Remote Sensing
New observations of ocean surface topography obtained by wide-swath satellite interferometry require new capabilities to process spatially correlated errors in order to assimilate these data into numerical models.
Max Yaremchuk, Christopher Beattie, Gleb Panteleev   +2 more
doaj   +3 more sources

Reconstruction of Wide Swath Significant Wave Height From Quasi‐Synchronous Observations of Multisource Satellite Sensors

Earth and Space Science
Global sea wave monitoring is of utmost importance for tasks such as analysis of ocean climate change, offshore fisheries, and early warning of marine disasters. Significant wave height (SWH) is one of the most vital and widely used metrics for measuring
Yuchao Yang, Jinpeng Qi, Qiushuang Yan, Chenqing Fan, Rui Zhang, Jie Zhang   +5 more
doaj   +2 more sources

END-TO-END PHYSICS-INFORMED REPRESENTATION LEARNING FOR SATELLITE OCEAN REMOTE SENSING DATA: APPLICATIONS TO SATELLITE ALTIMETRY AND SEA SURFACE CURRENTS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
This paper addresses physics-informed deep learning schemes for satellite ocean remote sensing data. Such observation datasets are characterized by the irregular space-time sampling of the ocean surface due to sensors’ characteristics and satellite ...
R. Fablet, M. M. Amar, Q. Febvre, M. Beauchamp, B. Chapron   +4 more
doaj   +1 more source