Results 41 to 50 of about 492 (181)

Refining the Simulation of Mixed‐Phase Clouds Over Coastal Antarctica With a Tailored Ice Nucleating Particle Parameterization

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Climate models have substantial biases in downwelling shortwave radiation over the Southern Ocean (SO) and Antarctica, primarily due to their inability to accurately represent the frequent occurrence of low‐level mixed‐phase clouds. Building on the evaluation of the Unified Model (UM) Regional Atmosphere and Land version 3 (RAL3), this study ...
Zhangcheng Pei, Sonya L. Fiddes, Marc D. Mallet, Simon P. Alexander, Kalli Furtado, Calum Knight, Greg Roff, Daniel Smith, Alain Protat, Adrian McDonald, W. John R. French   +10 more
wiley   +1 more source

Airport low-level wind shear lidar observation at beijing capital international airport

EPJ Web of Conferences, 2018
Ocean University of China lidar team operated a pulse coherent Doppler lidar (PCDL) for the low level wind shear monitoring at the Beijing Capital International Airport (BCIA) in 2015. The experiment configuration, observation modes is presented.
Zhang Hongwei, Wu Songhua, Wang Qichao, Liu Bingyi, Zhai Xiaochun   +4 more
doaj   +1 more source

FMCW Lidar Based Ranging And Range Selective Coherent Imaging: A Summary [PDF]

EPJ Web of Conferences
Coherent detection methods associated with FMCW technology enable range doppler processing with high resolution and sensitivity as well as holographic imaging at long range. Potential advantages of this range selective coherent sensing technique, include
Rupavatharam Krishna
doaj   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, Volume 43, Issue 6, Page 3617-3632, September 2026.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

River Sand and Gravel Mining: Global Drivers, Impacts, and Pathways for Sustainable Management

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract River sand and gravel are mined worldwide at volumes that now rival their natural replenishment, yet quantitative knowledge of this mining activity and its consequences lags far behind many other global environmental pressures. We synthesize 411 peer‐reviewed studies published since 1974 within a new Driver‐to‐Management Pathway for ...
Edward Park, Christopher R. Hackney, Dung Duc Tran, Mette Bendixen, Jim Best, Kai Wan Yuen, Hannah Runeckles, Md Sadiul Alam Chyon, Karl Kästner, Sonu Kumar, Halinishi Yusuf, Vanessa Lamb, Lars L. Iversen, Aelis Spiller, Rajiv Sinha, Eduardo Francisco da Silva, Enner Alcantara, Chengcheng Wu, Chengpeng Lu, Chu Jian, Jingyu Wang, Nguyen Duc Thien, Lian Feng, Priyank Pravin Patel, Jiachun Huang, Adam D. Switzer   +25 more
wiley   +1 more source

Investigation of feasibility of wind turbulence measurement by a pulsed coherent doppler lidar in the atmospheric boundary layer

EPJ Web of Conferences, 2018
Feasibilities of determination of the wind turbulence parameters from data measured by the Stream Line coherent Doppler lidar under different atmospheric conditions have been studied experimentally.
Smalikho Igor, Banakh Viktor
doaj   +1 more source

Lidar Estimates of the Anisotropy of Wind Turbulence in a Stable Atmospheric Boundary Layer

Remote Sensing, 2019
In this paper, a method is proposed to estimate wind turbulence parameters using measurements recorded by a conically scanning coherent Doppler lidar with two different elevation angles.
Viktor A. Banakh, Igor N. Smalikho
doaj   +1 more source

Lateral Momentum Transfer in Ice‐Covered Rivers

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 9, September 2026.
Abstract Ice cover alters river hydrodynamics by introducing surface roughness. This roughness modifies momentum redistribution and bed shear stress. Using theoretical arguments, we present an approach for the lateral momentum load in ice‐covered streams.
Javad Souri, Berkay Koyuncu, Leonardo P. Chamorro, Trung Bao Le   +3 more
wiley   +1 more source

Lidar Uncertainty Measurement Experiment (LUMEX) – Understanding Sampling Errors

EPJ Web of Conferences, 2016
Coherent Doppler LIDAR (Light Detection and Ranging) has been widely used to provide measurements of several boundary layer parameters such as profiles of wind speed, wind direction, vertical velocity statistics, mixing layer heights and turbulent ...
Choukulkar A., Brewer W.A., Banta R.M., Hardesty M., Pichugina Y., Senff Christoph, Sandberg S., Weickmann A., Carroll B., Delgado R., Muschinski A.   +10 more
doaj   +1 more source

Wind Coherence Measurement by a Single Pulsed Doppler Wind Lidar

Energy Procedia, 2016
AbstractA single pulsed Doppler wind lidar, deployed at the FINO1 platform in the North Sea, has been used to monitor the lateral and vertical coherence of the along-wind component. To maximize the sampling frequency of the monitoring system, a particular configuration based on small sweeping angles around the mean wind direction is used.
Cheynet, Etienne Francois Cyprien, Jakobsen, Jasna Bogunovic, Svardal, Benny, Reuder, Joachim, Kumer, Valerie-Marie   +4 more
openaire   +4 more sources