Results 51 to 60 of about 12,158 (226)

Compact, Engineered 2-Micron Coherent Doppler Wind Lidar Prototype for Field and Airborne Evaluation [PDF]

, 2006
The state-of-the-art 2-micron coherent Doppler wind lidar breadboard at NASA/LaRC will be engineered and compactly packaged consistent with future aircraft flights.
Amzajerdian, Farzin, Kavaya, Michael J., Koch, Grady J.   +2 more
core   +1 more source

Characteristics of unique cap, Tsurushi and Hata clouds around Mount Fuji

Weather, EarlyView.
Distinct clouds, such as cap clouds, Tsurushi (a type of lenticular cloud) and Hata (banner cloud‐like clouds), frequently form around Mount Fuji, an isolated peak with a slightly elliptical conical shape. Here, we examine their characteristics and occurrence patterns.
Hiroyuki Kusaka, Tomoko Kodama, Riho Ito, Tomoka Maeda, Natsuki Takada, Rio Ishikawa, Kakeru Konnai, Risa Asano, Miru Maebata, Ken T. Murata   +9 more
wiley   +1 more source

Analysis of MSFC ground-based Doppler lidar data [PDF]

, 1984
Analysis of data collected during the participation of the MSFC 10.6 micron pulsed Doppler lidar system (DLS) in the Joint Airport Weather Studies (JAWS) experiment is concluded.
Rothermel, J.
core   +1 more source

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

Wind Profiling from a New Compact, Pulsed, 2-Micron, Coherent-Detection Doppler Lidar Transceiver during Wind Measurement Intercomparison [PDF]

, 2009
NASA Langley Research Center has a long history of developing 2-micron laser transmitter for wind sensing. With support from NASA Laser Risk Reduction Program (LRRP) and Instrument Incubator Program (IIP), NASA Langley Research Center has developed a ...
Beyon, Jeffrey Y., Demoz, B., Kavaya, Michael J., Koch, Grady J., Singh, Upendra N., Veneable, D., Yu, Jirong   +6 more
core   +1 more source

On the accuracy of retrieved wind information from Doppler lidar observations [PDF]

, 2003
A single pulsed Doppler lidar was successfully deployed to measure air flow and turbulence over the Malvern hills, Worcester, UK. The DERA Malvern lidar used was a CO2 µm pulsed Doppler lidar.
Browning, C. G. Collier, Eberhard, F. Davies, G. N. Pearson, Gal-Chen, K. E. Bozier, Kuettner, Kunkel, Panofsky, Pearson, Price, Stull, Wilks, Wilson   +14 more
core   +2 more sources

Machine Learning Based Prediction of Tropical Cyclone Rapid Intensification in the Western North Pacific: Importance of Data Augmentation and Loss Function

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract In this study, we developed a TabNet‐based machine learning model to predict tropical cyclone (TC) rapid intensification (RI) in the Western North Pacific. The most significant challenge in predicting RI is the severe class imbalance between rapid and non‐rapid intensification cases, typically 4.2:1 ratio based on 1977–2021 records.
Sanghyeok An, Jiwon Jeong, Seok‐Woo Son, Hyungjun Kim, Jee‐Hoon Jeong, Jin‐Ho Yoon   +5 more
wiley   +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

Observation of Mountain Waves and Secondary Gravity Waves in the Mesosphere Lower Thermosphere Above Patagonia

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract We find observational evidence for mountain waves (MWs) and secondary gravity waves (2GWs) in the OH*(3‐1) layer above Tierra del Fuego, Argentina. On the night of 21–22 May 2018, the Advanced Mesospheric Temperature Mapper (AMTM) obtained temperatures at ∼84 ${\sim} 84$ km.
Robert Reichert, Pierre‐Dominique Pautet, Bernd Kaifler, Sebastian Rhode, Jörn Ungermann, Kaoru Sato, Diego Janches, Steven Smith   +7 more
wiley   +1 more source

Design of a Non-scanning Lidar for Wind Velocity and Direction Measurement

EPJ Web of Conferences, 2016
A Doppler lidar system for wind velocity and direction measurement is presented. The lidar use a wide field of view (FOV) objective lens as an optical antenna for both beam transmitting and signal receiving.
Liu Bo, Peng Zhangxian
doaj   +1 more source