Results 31 to 40 of about 307 (173)

Wind Profiling from Boundary Layer to Stratosphere Using a Scanning Rayleigh Doppler Lidar and a Coherent Lidar

Photonics
Accurate measurements of wind fields in the troposphere and stratosphere are essential for advancing atmospheric dynamics research, improving weather prediction, and supporting aerospace operations.
Hengjia Liu, Jie Liu, Sijiang Wu, Shuhua Zhang, Jiawei Li, Chong Chen, Dongsong Sun, Yuli Han   +7 more
doaj   +1 more source

Observations and Analysis of Turbulent Wake of Wind Turbine by Coherent Doppler Lidar

EPJ Web of Conferences, 2016
Turbulent wake of wind turbine will reduce the power output of wind farm. The access to real turbulent wake of wind turbine blades with different spatial and temporal scales is provided by the pulsed Coherent Doppler Lidar (CDL) which operates by ...
Wu Songhua, Yin Jiaping, Li Rongzhong, Wang Xitao, Liu Bingyi, Liu Jintao   +5 more
doaj   +1 more source

Long-Range WindScanner System

Remote Sensing, 2016
The technical aspects of a multi-Doppler LiDAR instrument, the long-range WindScanner system, are presented accompanied by an overview of the results from several field campaigns.
Nikola Vasiljević, Guillaume Lea, Michael Courtney, Jean-Pierre Cariou, Jakob Mann, Torben Mikkelsen   +5 more
doaj   +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

NASA's Aerosol Wind Profiler [PDF]

EPJ Web of Conferences
NASA's Langley Research Center recently completed development of the Aerosol Wind Profiler (AWP) suborbital, 2 µm coherent Doppler wind lidar (CDWL) instrument.
Marketon John, Bedka Kristopher, Henderson Sammy, Kavaya Michael   +3 more
doaj   +1 more source

Spatial averaging-effects on turbulence measured by a continuous-wave coherent lidar

Meteorologische Zeitschrift, 2009
The influence of spatial volume averaging of a focused continuous-wave coherent Doppler lidar on observed wind turbulence in the atmospheric surface layer is described and analysed. For the first time, comparisons of lidar-measured turbulent spectra with
Mikael Sjöholm, Torben Mikkelsen, Jakob Mann, Karen Enevoldsen, Michael Courtney   +4 more
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

Aerosol/Cloud Measurements Using Coherent Wind Doppler Lidars [PDF]

EPJ Web of Conferences, 2016
The accurate localization and characterization of aerosol and cloud layers is crucial for climate studies (aerosol indirect effect), meteorology (Planetary Boundary Layer PBL height), site monitoring (industrial emissions, mining,…) and natural hazards (thunderstorms, volcanic eruptions).
Royer Philippe, Boquet Matthieu, Cariou Jean-Pierre, Sauvage Laurent, Parmentier Rémy   +4 more
openaire   +2 more sources

Characteristics of upper‐level updrafts and downdrafts in the anvils of tropical deep convective clouds

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates the thermodynamic and microphysical characteristics of updrafts and downdrafts of tropical deep convective anvil clouds using in situ measurements. We found that parts of the downdrafts are in ice supersaturation in these clouds.
Sreehari Kizhuveettil, Jordi Vila‐Guerau de Arellano, Martina Krämer, Armin Afchine, Luiz A. T. Machado, Martin Zöger, Wiebke Frey   +6 more
wiley   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source