Results 41 to 50 of about 307 (173)

Coherent Doppler lidar for wind velocity and direction measurements.

The Review of Laser Engineering, 1989
As a remote wind sensor having an ability of three-dimensional wind sounding, a coherent Doppler lidar operating in the eye-safe infrared wavelength range of 9-10mu;m has been successfully developed in ground-based and airborne applications for a variety of scientific research purposes.
ASAI, Kazuhiro, ISHIZU, Mituo, ITABE, Toshikazu   +2 more
openaire   +2 more sources

Climatology of Atmospheric Boundary Layer Height Over Nearshore and Open Ocean Regions of the Western North Pacific

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Atmospheric boundary layer height (ABLH) plays an important role in air–sea interactions and regional climate over the western North Pacific (WNP). Using ERA5 reanalysis data from 1979 to 2025, this paper investigates the interannual variability, monthly variations, and seasonal spatial patterns of ABLH.
Yucheng Xue, Qiusheng Li
wiley   +1 more source

Development of Doppler Wind Lidar Simulator for future space application [PDF]

EPJ Web of Conferences
Wind is one of fundamental meteorological elements describing the atmospheric state. Global wind observation is important to improve the initial conditions essential for numerical weather prediction (NWP), climate studies, and meteorological studies.
Ishii Shoken, Yamanaka Sara, Tanoue Nami, Takenaka Hideki, Okamoto Kozo, Okabe Izumi, Sato Atsushi, Nishizawa Tomoaki, Jin Yoshitaka, Okamoto Hajime   +9 more
doaj   +1 more source

Fire‐Atmosphere Coupling Starts Upwind: Selective Redistribution of Turbulence at the Fire‐Induced Rear Inflow

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Wildfires alter local atmospheric conditions, yet the spatial extent and frequency‐dependent characteristics of fire‐induced inflow perturbations remain largely unquantified. This study applies Multivariate Empirical Mode Decomposition (MEMD) to analyze high‐frequency horizontal wind speed data from a tower positioned at varying distances (∼80–
Gitesh Wasson, Marwan Katurji, Peyman Zawar‐Reza, Andres Valencia, Jiawei Zhang, Tara Strand, H. Grant Pearce, Jessica Kerr   +7 more
wiley   +1 more source

Resolving Convective‐Scale Cloud and Precipitation Structures in Tropical Cyclone Rainbands With Novel Raman Lidar Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Low‐level clouds in the tropical cyclone (TC) rainbands modulate the radial inflow of warm, moist boundary layer air, which can impact TC intensity. Yet, precisely measuring rainband cloud boundaries with existing remote sensing techniques remains a challenge.
Ethan J. Murray, Zhien Wang, Kristopher B. Karnauskas, Jun A. Zhang   +3 more
wiley   +1 more source

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

Shipborne wind measurement and motion-induced error correction by coherent doppler lidar over yellow sea in 2014

EPJ Web of Conferences, 2018
Shipborne wind observations by the Coherent Doppler Lidar (CDL) during the 2014 Yellow Sea campaign are presented to study the structure of the Marine Atmospheric Boundary Layer (MABL).
Zhai Xiaochun, Wu Songhua, Liu Bingyi, Song Xiaoquan   +3 more
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

Estimating the Parameters of Wind Turbulence from Spectra of Radial Velocity Measured by a Pulsed Doppler Lidar

Remote Sensing, 2021
The strategy providing an estimation of both the mean velocity and the temporal and spatial spectra of radial velocity from data of the same pulse coherent Doppler lidar is proposed.
Viktor A. Banakh, Igor N. Smalikho, Andrey V. Falits, Artem M. Sherstobitov   +3 more
doaj   +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