Results 51 to 60 of about 21,027 (215)

Asymmetry of Cyclonic Sea Surface Wind and Wave Observed by SAR

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract CyclObs‐derived wind and SWH field are extracted from over 600 dual‐polarized Sentinel‐1 (S‐1) images of around 300 tropical cyclones (TCs) over the past eight years to investigate asymmetry of wind and wave fields during TCs. Fetch analysis and machine learning technique, eXtreme Gradient Boosting (XGBoost), is used to establish a ...
Weizeng Shao, Yuyi Hu, Qingping Zou, Maurizio Migliaccio, Xingwei Jiang   +4 more
wiley   +1 more source

Research progress in profiling cloud and precipitation microphysics characteristic with ground-based multi-frequency radars

暴雨灾害, 2023
Meteorological radars, as remote sensing instruments, play a vital role in observing clouds and precipitation. However, due to the complexity of hydrometeors in shape, density, diameter, orientation, and particle size distributions, accurate ...
Haoran LI, Zheng RUAN, Liping LIU, Yichen CHEN, Yongheng BI, Yun ZHANG, Hongbin CHEN, Jietai MAO   +7 more
doaj   +1 more source

Performance Investigation on Scan-On-Receive and Adaptive Digital Beam-Forming for High-Resolution Wide-Swath Synthetic Aperture Radar [PDF]

, 2009
The work investigates the performance of the Smart Multi-Aperture Radar Technique (SMART) Synthetic Aperture Radar (SAR) system for high-resolution wide-swath imaging based on Scan-on-Receive (SCORE) algorithm for receive beam steering.
Bordoni, Federica, Gebert, Nicolas, Krieger, Gerhard, Makhoul Varona, Eduardo, Younis, Marwan   +4 more
core  

On the remote sensing of oceanic and atmospheric convection in the Greenland Sea by synthetic aperture radar

, 2004
In this paper we discuss characteristic properties of radar signatures of oceanic and atmospheric convection features in the Greenland Sea. If the water surface is clean (no surface films or ice coverage), oceanic and atmospheric features can become ...
Alexei Androssov, Alpers, Androsov, Angelo Rubino, Atkinson, Broecker, Carsey, Fischer, Henning Wehde, Horstmann, Johannessen, Leonid Mitnik, Mahadevan, Marshall, MEDOC Group, Melsheimer, Mitnik, Mitnik, Monaldo, Morawetz, Roland Romeiser, Romanenkov, Romeiser, Romeiser, Sikora, Stefan Kern, Stoffelen, Susanne Ufermann, Ufermann, Ufermann, Wadhams   +30 more
core   +1 more source

Identification of Precipitating Marine Low‐Altitude Water Clouds by CALIPSO: Observations and Detections

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 17, 16 September 2025.
Abstract Marine boundary layer (MBL) clouds and their precipitation are crucial in regulating the Earth's radiation budget. In this study, we use measurements from the Cloud‐Aerosol Lidar with Orthogonal Polarization (CALIOP) to investigate how the microphysical and optical properties of MBL clouds change at the cloud top when precipitation forms ...
Shan Zeng, Yongxiang Hu, Mark Vaughan, Charles Trepte, Zhaoyan Liu, Ali Omar, Brian Getzewich, Sharon Rodier   +7 more
wiley   +1 more source

Clutter Modeling and Characteristics Analysis for GEO Spaceborne-Airborne Bistatic Radar

Remote Sensing
The spaceborne-airborne bistatic radar (SABR) system employs a spaceborne transmitter and an airborne receiver, offering significant advantages, such as wide coverage, outstanding anti-stealth capabilities, and notable resistance to jamming.
Shuo Zhang, Shuangxi Zhang, Tianhua Guo, Ruiqi Xu, Zicheng Liu, Qinglei Du   +5 more
doaj   +1 more source

Dos Lenguas rock glacier kinematics stable despite warming trend (2016–2024): Surface changes and the role of topography and climate in the Dry Andes of Argentina

Earth Surface Processes and Landforms, Volume 50, Issue 11, 15 September 2025.
UAV‐based rock glacier surface changes on Dos Lenguas (Dry Andes, Argentina) are unchanged between 2016 and 2024, elucidating stable permafrost conditions. We conclude that the lack of snow sheltering stabilizes the landform's kinematics. This is a positive finding for a region where (peri)glacially stored waters are essential for river runoff ...
Melanie Stammler, Jan Blöthe, Fabian Flöck, Rainer Bell, Lothar Schrott   +4 more
wiley   +1 more source

Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data [PDF]

The Cryosphere
Observations of glacier mass changes are key to understanding the response of glaciers to climate change and related impacts, such as regional runoff, ecosystem changes, and global sea level rise.
L. Piermattei, L. Piermattei, L. Piermattei, M. Zemp, C. Sommer, F. Brun, M. H. Braun, L. M. Andreassen, J. M. C. Belart, E. Berthier, A. Bhattacharya, L. Boehm Vock, T. Bolch, T. Bolch, A. Dehecq, I. Dussaillant, D. Falaschi, D. Falaschi, C. Florentine, D. Floricioiu, C. Ginzler, G. Guillet, R. Hugonnet, R. Hugonnet, R. Hugonnet, M. Huss, M. Huss, M. Huss, A. Kääb, O. King, C. Klug, F. Knuth, L. Krieger, J. La Frenierre, R. McNabb, C. McNeil, R. Prinz, L. Sass, T. Seehaus, D. Shean, D. Treichler, A. Wendt, R. Yang   +42 more
doaj   +1 more source

Spaceborne imaging radar-C instrument [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 1989
The Shuttle Imaging Radar (SIR)-C instrument has been designed to obtain simultaneous multifrequency and simultaneous multipolarization radar images from a low Earth orbit. It is a multiparameter imaging radar that will be flown during two different seasons.
openaire   +2 more sources

System Concepts for Bi- and Multi-Static SAR Missions [PDF]

, 2003
The performance and capabilities of bi- and multistatic spaceborne synthetic aperture radar (SAR) are analyzed. Such systems can be optimized for a broad range of applications like frequent monitoring, wide swath imaging, single-pass cross-track ...
Fiedler, Hauke, Hounam, David, Krieger, Gerhard, Moreira, Alberto, Rodriguez Cassola, Marc   +4 more
core