Results 81 to 90 of about 12,338 (223)

Wind turbine wake characterization in complex terrain via integrated Doppler lidar data from the Perdigão experiment [PDF]

, 2018
During the intensive period (May-June 2017) of the Perdigäo experiment, three sets of Doppler lidar were operated to scan the wake of the wind turbine (WT) on the southwest ridge.
Barthelmie, R.j., Menke, Robert, Pryor, S.C., Wildmann, N.   +3 more
core   +2 more sources

Classification of the Atmospheric Boundary Layer Based on Turbulent Kinetic Energy Budget Terms Using Machine‐Learning Methods

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The atmospheric boundary layer (ABL) controls surface‐atmosphere exchanges, yet accurately capturing its full complexity, particularly the dynamically evolving nature of turbulence across diverse weather conditions, remains a formidable challenge for traditional classification methods.
Jinhong Xian, Xiaoling Lin, Zongxu Qiu, Jianping Guo, Hongyan Luo, Chao Lu, Huayan Rao, Yuexin Yang, Ming Luo, Yan Yang, Chunsheng Zhang, Zhiliang Hu, Jun Zhang, Aiming Liu, Honglong Yang   +14 more
wiley   +1 more source

Field Observations Validate LES‐Derived Scaling of Vertical‐Velocity Variance During the Afternoon Transition of the Convective Boundary Layer

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The convective velocity scale is commonly used to describe the vertical‐velocity variance in the convective boundary layer driven by surface heating, and is valid when the surface heat flux varies slowly compared to the eddy turnover time. This quasi‐equilibrium assumption typically holds from late morning to early afternoon, but breaks down ...
Omar El Guernaoui, Dan Li, Radouan Boukharfane   +2 more
wiley   +1 more source

Analysis of airborne Doppler lidar, Doppler radar and tall tower measurements of atmospheric flows in quiescent and stormy weather [PDF]

The first experiment to combine airborne Doppler Lidar and ground-based dual Doppler Radar measurements of wind to detail the lower tropospheric flows in quiescent and stormy weather was conducted in central Oklahoma during four days in June-July 1981 ...
Bluestein, H. B., Doviak, R. J., Eilts, M. D., Mccaul, E. W., Rabin, R., Sundara-Rajan, A., Zrnic, D. S.   +6 more
core   +1 more source

Expected Characteristics of Global Wind Profile Measurements with a Scanning, Hybrid, Doppler Lidar System [PDF]

, 2008
Over 20 years of investigation by NASA and NOAA scientists and Doppler lidar technologists into a global wind profiling mission from earth orbit have led to the current favored concept of an instrument with both coherent- and direct-detection pulsed ...
Kavaya, Michael J.
core   +1 more source

Methane and Ethane Emission Rates, Intensities, and Trends: Aircraft Mass Balance Insights Over the Denver‐Julesburg Basin, Fall 2021

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Despite a 2.1‐fold increase in oil and gas (O&G) production from 2012 to 2021 in the Wattenberg Field (WF) area of the Denver‐Julesburg Basin (DJB), total methane (CH4) emissions have remained unchanged within measurement uncertainties (26.0 ± 6.8 t/hr in 2012, 24.0 ± 5 t/hr in 2015, and 21.4 ± 5.7 t/hr in 2021), while ethane (C2H6) emissions ...
H. M. Daley, R. R. Dickerson, P. Stratton, H. He, X. Ren, A. R. Koss, W. A. Brewer, S. Baidar, B. Hmiel, D. Bon, G. Pierce, P. Weibring, D. Richter, J. Walega, M. C. Ngulat, A. Santos, A. L. Hodshire, T. L. Vaughn, D. Zimmerle, A. Fried   +19 more
wiley   +1 more source

Impact of Lidar Data Assimilation on Low-Level Wind Shear Simulation at Lanzhou Zhongchuan International Airport, China: A Case Study

Atmosphere, 2020
Doppler wind lidar has played an important role in alerting low-level wind shear (LLW). However, these high-resolution observations are underused in the model-based analysis and forecasting of LLW.
Lanqian Li, Ningjing Xie, Longyan Fu, Kaijun Zhang, Aimei Shao, Yi Yang, Xuwei Ren   +6 more
doaj   +1 more source

Linking Remotely Sensed Hydromorphological Conditions With Biological Observations to Estimate Salmon Spawning Capacity

Ecohydrology, Volume 19, Issue 3, April/May 2026.
ABSTRACT Performing ecohydraulic assessments of salmon habitat is essential for planning and evaluating management actions. Current in situ and modelling approaches, although accurate, can be time‐consuming and expensive, which limits the areal extent of the study.
Jared G. Stieve, Daniel S. Auerbach, Alexander K. Fremier   +2 more
wiley   +1 more source

Simultaneous Observations of Mesoscale Gravity Waves Over the Central US with CRRL Na Doppler Lidars and USU Temperature Mapper

EPJ Web of Conferences, 2016
We present the first coordinated study of a 1-h mesoscale gravity wave event detected simultaneously by a Na Doppler lidar at Boulder, CO (40.1°N, 105.2°W), and a Na Doppler lidar and an airglow temperature mapper (AMTM) at Logan, UT (41.7°N, 111.8°W) in
Lu Xian, Chen Cao, Huang Wentao, Smith John A., Zhao Jian, Chu Xinzhao, Yuan Tao, Pautet Pierre-Dominique, Taylor Mike J.   +8 more
doaj   +1 more source

Doppler Rayleigh/Mie/Raman lidar for wind and temperature measurements in the middle atmosphere up to 80 km [PDF]

, 2010
A direct detection Doppler lidar for measuring wind speed in the middle atmosphere up to 80 km with 2 h resolution was implemented in the ALOMAR Rayleigh/Mie/Raman lidar (69° N, 16° E).
G. Baumgarten
core   +1 more source