Results 41 to 50 of about 123 (102)

Deep Learning‐Based MultiSource Satellite Data Fusion and Downscaling for Tropical Cyclone Wind Fields

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract High‐resolution observations of ocean surface wind (OSW) are crucial for analyzing and forecasting tropical cyclones; however, current data are insufficient. While data sets such as the Cross‐Calibrated Multiplatform (CCMP) and ERA5 provide gap‐free wind fields, their 25 km resolution and tendency to underestimate cyclone wind speeds limit ...
Enze Zhang, Hui Su, Pak Wai Chan, Chengxing Zhai, Wensheng Zhou, Weifan Xu, Mingyuan Hu, Xingyi Li, Yuming Jia, Yinyu Song   +9 more
wiley   +1 more source

Active SAR Antennas: Design, Development, and Current Programs

International Journal of Antennas and Propagation, Volume 2009, Issue 1, 2009., 2009
The paper presents the design guidelines for Active SAR Antennas followed for the development of COSMO Sky Med SAR Antenna Subsystem. They have brought to define the antenna architecture, the RF, and electrical requirements for all the antenna RF, digital and power units, taking into account the available technologies and achievable performance.
P. Capece, Giovanni Toso
wiley   +1 more source

A New Age of SAR: How Can Commercial Smallsat Constellations Contribute to NASA's Surface Deformation and Change Mission?

Earth and Space Science, Volume 12, Issue 1, January 2025.
Abstract In response to the 2017 Decadal Survey, NASA conducted a five‐year study on the Surface Deformation and Change (SDC) designated observable to study potential mission concepts. As part of the SDC mission study, the Commercial Synthetic Aperture Radar (ComSAR) subgroup was tasked with evaluating the current landscape of the SAR and ...
Stacey A. Huang, Batuhan Osmanoğlu, Bernd Scheuchl, Shadi Oveisgharan, Jeanne M. Sauber, MinJeong Jo, Ala Khazendar, Ekaterina Tymofyeyeva, Betsy Wusk, Arif Albayrak   +9 more
wiley   +1 more source

Region-Based Sea Ice Mapping Using Compact Polarimetric Synthetic Aperture Radar Imagery with Learned Features and Contextual Information

Remote Sensing, 2023
Operational sea ice maps are usually generated manually using dual-polarization (DP) synthetic aperture radar (SAR) satellite imagery, but there is strong interest in automating this process.
Saeid Taleghanidoozdoozan, Linlin Xu, David A. Clausi   +2 more
doaj   +1 more source

Baffin Bay Ice Export and Production From Sentinel‐1, the RADARSAT Constellation Mission, and CryoSat‐2: 2016–2022

Geophysical Research Letters, Volume 51, Issue 22, 28 November 2024.
Abstract Baffin Bay is located between Greenland and several islands of the Canadian Arctic, providing a conduit for the downstream transport of ice and freshwater to the North Atlantic via Davis Strait. Using satellite observations from Sentinel‐1, the RADARSAT Constellation Mission, and CryoSat‐2, we estimated the sea ice export through Davis Strait ...
S. E. L. Howell, D. G. Babb, J. C. Landy, G. W. K. Moore, T. J. Ballinger, K. McNeil, B. Montpetit, M. Brady   +7 more
wiley   +1 more source

Operational Surface Water Detection and Monitoring Using Radarsat 2

Remote Sensing, 2016
Traditional on-site methods for mapping and monitoring surface water extent are prohibitively expensive at a national scale within Canada. Despite successful cost-sharing programs between the provinces and the federal government, an extensive number of ...
Sandra Bolanos, Doug Stiff, Brian Brisco, Alain Pietroniro   +3 more
doaj   +1 more source

RADARSAT Constellation Mission’s Operational Polarimetric Modes: A User-Driven Radar Architecture

Canadian Journal of Remote Sensing, 2021
Canada’s Earth-observing RADARSAT Constellation Mission (RCM) is intended to serve operational users. The users’ main objectives were to have routinely available high-quality quantitative information about their applications, with large area coverage ...
R. Keith Raney, Brian Brisco, Mohammed Dabboor, Masoud Mahdianpari   +3 more
doaj   +1 more source

Vertical Carbon Export During a Phytoplankton Bloom in the Chukchi Sea: Physical Setting and Frontal Subduction

Journal of Geophysical Research: Oceans, Volume 129, Issue 11, November 2024.
Abstract In order to quantify pelagic‐benthic coupling on high‐latitude shelves, it is imperative to identify the different physical mechanisms by which phytoplankton are exported to the sediments. In June–July 2023, a field program documented the evolution of an under‐ice phytoplankton bloom on the northeast Chukchi shelf.
Robert S. Pickart, Michael A. Spall, Frank Bahr, Loreley Lago, Peigen Lin, Astrid Pacini, Matthew Mills, Jie Huang, Kevin R. Arrigo, Gert van Dijken, Leah T. McRaven, Steven Roberts   +11 more
wiley   +1 more source

Optimizing Soil Moisture Retrieval: Utilizing Compact Polarimetric Features with Advanced Machine Learning Techniques

Land, 2023
Soil moisture plays a crucial role in various environmental processes and is essential for agricultural management, hydrological modeling, and climate studies.
Mohammed Dabboor, Ghada Atteia, Rana Alnashwan   +2 more
doaj   +1 more source

Toward Comprehensive Understanding of Air‐Sea Interactions Under Tropical Cyclones: On the Importance of High Resolution and Multi‐Modal Observations

Geophysical Research Letters, Volume 51, Issue 19, 16 October 2024.
Abstract The three‐dimensional structure of the Tropical Cyclone's baroclinic wake is synthesized as an averaged baroclinic‐dominant response of the upper ocean. The resulting persisting sea surface depression can easily be monitored using the present‐day altimeter constellation.
Clément Combot, Alexis Mouche, Clément de Boyer Montegut, Bertrand Chapron   +3 more
wiley   +1 more source