Results 31 to 40 of about 67,550 (243)

Missed Approach, a Safety-Critical Go-Around Procedure in Aviation: Prediction Based on Machine Learning-Ensemble Imbalance Learning

Advances in Meteorology, 2023
The final approach phase of an aircraft accounts for nearly half of all aviation incidents worldwide due to low-level wind shear, heavy downpours, runway excursions, and unsteady approaches.
Afaq Khattak, Pak-Wai Chan, Feng Chen, Haorong Peng, Caroline Mongina Matara   +4 more
doaj   +1 more source

Low Level Turbulence Detection For Airports

International Journal of Aviation, Aeronautics, and Aerospace, 2019
—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases. Despite many advances in on-board and ground based warning systems. Wind shear remains a formidable force that coupled with
Anthony O' Connor, Derek Kearney
doaj   +1 more source

Evaluating the Effect of Turbulence on Aircraft During Landing and Take-Off Phases

International Journal of Aviation, Aeronautics, and Aerospace, 2018
—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases. Low level wind shear has been identified as one of the primary factors for aircraft go-arounds and aborted landings. During
Anthony O' Connor, Derek Kearney
doaj   +1 more source

Low-Level Wind Shear Pre-warning Algorithms Based on Scanning Doppler Lidar [PDF]

EPJ Web of Conferences
Low-level wind shear significantly impacts aviation safety. Doppler lidar is one of the primary tools currently used for detecting low-level wind shear at numerous international airports.
Zhang Hongwei, Zhang Xinyu, Liu Xiaoying, Sun Can, Zhang Kaijun, Chen Lijing, Fu Longyan, Liu Bingyi, Liu Jintao, Wu Songhua   +9 more
doaj   +1 more source

Study on the influence of topography on wind shear numerical simulations based on WRF–CALMET [PDF]

Geoscientific Instrumentation, Methods and Data Systems
This study focuses on the critical issue of low-altitude wind shear, which is vital for aircraft safety during takeoff and landing. Using the WRF–CALMET model, we assess the impact of topography on low-level wind shear at Zhongchuan Airport.
X. Wang, Y. Lei, B. Shi, Z. Wang, X. Li, J. Wang   +5 more
doaj   +1 more source

Classification and properties of non-idealized coastal wind profiles – an observational study [PDF]

Wind Energy Science, 2022
Non-idealized wind profiles frequently occur over the Baltic Sea and are important to take into consideration for offshore wind power, as they affect not only the power production but also the loads on the structure and the behavior of the wake behind ...
C. Hallgren, J. Arnqvist, E. Nilsson, S. Ivanell, M. Shapkalijevski, A. Thomasson, H. Pettersson, E. Sahlée   +7 more
doaj   +1 more source

A Statistical Investigation of Mesoscale Precursors of Significant Tornadoes: The Italian Case Study

Atmosphere, 2020
In this study, mesoscale environments associated with 57 significant tornadoes occurring over Italy in the period 2000−2018 are analyzed. The role of the vertical Wind Shear in the lower and middle troposphere, in terms of low-level shear (LLS) and
Roberto Ingrosso, Piero Lionello, Mario Marcello Miglietta, Gianfausto Salvadori   +3 more
doaj   +1 more source

Brief communication: On the definition of the low-level jet [PDF]

Wind Energy Science, 2023
Low-level jets (LLJs) are examples of non-logarithmic wind speed profiles affecting wind turbine power production, wake recovery, and structural/aerodynamic loading.
C. Hallgren, J. A. Aird, S. Ivanell, H. Körnich, R. J. Barthelmie, S. C. Pryor, E. Sahlée   +6 more
doaj   +1 more source

Impact of Negative Geostrophic Wind Shear on Wind Farm Performance

PRX Energy, 2022
Baroclinicity, which leads to height-dependent driving pressure gradients, occurs in various situations such as the flow transition between land and sea, and sloping terrain.
Anja Stieren, Jens H. Kasper, Srinidhi N. Gadde, Richard J.A.M. Stevens   +3 more
doaj   +1 more source

Comparison on the Circulation Background of Tropical Cyclone Affecting the South China Sea Based upon Different Reanalysis Datasets

应用气象学报, 2023
China Meteorological Administration launched China's Global atmospheric reanalysis program in November 2013, and the global atmospheric reanalysis product (CMA-RA) has been successfully developed.
Xing Caiying, Wu Sheng'an, Zhu Jingjing
doaj   +1 more source