Results 51 to 60 of about 144 (135)

Enhanced Global Ionospheric Mapping Using Deep Ensemble Neural Networks With Uncertainty Quantification

Space Weather, Volume 23, Issue 7, July 2025.
Abstract Global ionospheric mapping is essential for ionospheric research. However, conventional approaches often struggle to accurately capture small‐scale ionospheric variations. This study proposes a deep ensemble method based on neural networks (NNs) that generates high‐accuracy global vertical total electron content (VTEC) maps along with ...
Shuyin Mao, Yuanxin Pan, Grzegorz Kłopotek, Matthias Schartner, Hana Krásná, Aletha de Witt, Benedikt Soja   +6 more
wiley   +1 more source

Physics-Aware Hybrid CNN–Transformer Network for GNSS-R Sea Surface Wind Speed Estimation

Remote Sensing
Global Navigation Satellite System Reflectometry (GNSS-R) provides a promising approach for global ocean wind monitoring with high temporal resolution.
Baiwei An, Weiwei Qin, Weijie Kang, Li Zhang, Hao Chi   +4 more
doaj   +1 more source

GSK‐3β and mTOR Phosphorylation Mediate the Reversible Regulation of Hypomagnetic Field on Adult Neural Stem Cell Proliferation

European Journal of Neuroscience, Volume 62, Issue 2, July 2025.
Working model illustrates the effects of GMF, HMF, and rGMF on aNSC proliferation. HMF suppresses the proliferation of aNSCs by reducing the phosphorylation of GSK 3β, thereby increasing its activity. Conversely, rGMF compensates for this suppression by activating mTOR via increased mTOR phosphorylation. ABSTRACT Exposure to hypomagnetic field (HMF) of
Jie Ren, Fulai Li, Jianxun Shen, Lanxiang Tian, Yongxin Pan   +4 more
wiley   +1 more source

Tropical Cyclone Surface Winds From Aircraft With a Neural Network

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 2, June 2025.
Abstract Estimates of the surface wind field in a tropical cyclone (TC) are required in real time by operational forecast centers to warn the public about potential impacts to life and property. In‐situ aircraft data must be adjusted from flight level to surface using wind reductions (WRs) since the aircraft cannot fly too low due to safety concerns ...
Alexander J. DesRosiers, Michael M. Bell, Jennifer C. DeHart, Jonathan L. Vigh, Christopher M. Rozoff, Eric A. Hendricks   +5 more
wiley   +1 more source

On the development of geophysical model functions for Ku-band scatterometer wind retrievals: SCATSAT-GMF

, 2019
Peer ...
Wang, Zhixiong, Stoffelen, Ad, Verhoef, Anton, He, Yijun, Zhang, Biao, Lin, Wenming, Portabella, Marcos   +6 more
openaire   +1 more source

Estimating Wind Direction and Wind Speed Over Lakes With Surface Water Ocean Topography and Sentinel‐1 Satellite Observations

Earth and Space Science, Volume 12, Issue 3, March 2025.
Abstract Wind at the water‐air interface is an important driver of hydrologic and biogeochemical processes in lakes. Satellite synthetic aperture radar (SAR) is commonly used over the ocean to retrieve wind fields using backscatter coefficients which are sensitive to wind‐driven surface water roughness; however, its application to lakes has been ...
Katie A. McQuillan, George H. Allen, Jessica Fayne, Huilin Gao, Jida Wang   +4 more
wiley   +1 more source

Evaluation of the effect of satellite motion on GNSS-R wind speed retrieval: insights from TRITON

Frontiers in Remote Sensing
TRITON is a newly launched GNSS-Reflectometry (GNSS-R) satellite mission by Taiwan, designed to enhance global sea surface wind monitoring. Among its scientific objectives, TRITON delivers high-resolution Delay Doppler Map (DDM) observations that enable ...
Ming-Yi Chen, Hwa Chien, Hwa Chien, Wen-Hao Yeh, Li-Ching Lin, Yu-Fu Liou   +5 more
doaj   +1 more source

Unveiling Cryosphere Dynamics by Distributed Acoustic Sensing and Data‐Driven Hydro‐Thermo Coupled Simulation

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract As global warming continues, the Earth's cryosphere is experiencing severe degradation. This study leverages a novel combination of distributed acoustic sensing (DAS) and artificial intelligence to monitor and decipher cryospheric dynamics. We have developed an advanced time‐lapse surface wave analysis workflow to capture shear wave velocity ...
Haoyuan Sun, Feng Cheng, Jianghai Xia, Jianbo Guan, Zefeng Li, Jonathan B. Ajo‐Franklin   +5 more
wiley   +1 more source

Exploring the Characteristics of Ocean Surface Winds at High Resolution With Doppler Scatterometry

Geophysical Research Letters, Volume 51, Issue 23, 16 December 2024.
Abstract Ocean wind plays a fundamental role in the Earth's climate system by transporting heat, moisture, and gases globally while mediating their exchange with the ocean. How, and at what scales these processes occur is an active area of research, and modeling studies suggest that the strongest vertical transport and air‐sea exchanges occur at small ...
Alexander Wineteer, Ernesto Rodriguez, Dragana Perkovic Martin, Hector Torres, Federica Polverari, Ruzbeh Akbar, Cesar Rocha   +6 more
wiley   +1 more source

Wind Speed‐Up in Wind Farm Wakes Quantified From Satellite SAR and Mesoscale Modeling

Wind Energy, Volume 27, Issue 11, Page 1369-1387, November 2024.
ABSTRACT Satellite synthetic aperture radar (SAR) provides ocean surface wind fields at 10 m above sea level. The objective is to investigate the capability of SAR satellite StriX observations for mapping offshore wind farm wakes. The focus is on the conditions under which an apparent wind speed‐up is generated, measured in 48% of the 67 images ...
Charlotte Bay Hasager, James Imber, Jana Fischereit, Aito Fujita, Krystallia Dimitriadou, Merete Badger   +5 more
wiley   +1 more source