Results 41 to 50 of about 3,922,670 (148)

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Using WSR-88D Polarimetric Data to Identify Bird-Contaminated Doppler Velocities

Advances in Meteorology, 2013
As an important part of Doppler velocity data quality control for radar data assimilation and other quantitative applications, an automated technique is developed to identify and remove contaminated velocities by birds, especially migrating birds.
Yuan Jiang, Qin Xu, Pengfei Zhang, Kang Nai, Liping Liu   +4 more
doaj   +1 more source

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

High Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li, Jiangling Zhi, Yu Wang, Hantao Tao, Zhaoming Li, Shanqiang Gu, Zhe Li, Zeyu Zhang, Lei Zhang, Guoying Tang   +9 more
wiley   +1 more source

Hailstorm Events Over a Maritime Tropical Region: Environmental Influences on Microphysics

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Building on a previous study showing that NetCAPE0C—formulated as CAPE calculated up to the 0° ${}^{\circ}$C isotherm, after subtracting CIN and correcting for water loading—is effective in predicting hail occurrence in maritime tropical (mT) environments, we examined the microphysics to understand why, particularly for ordinary pulse storms ...
Fitria Puspita Sari, Sonia Lasher‐Trapp   +1 more
wiley   +1 more source

Improving the Interpretability of Classification Rules Discovered by an Ant Colony Algorithm: Extended Results [PDF]

, 2016
The vast majority of Ant Colony Optimization (ACO) algorithms for inducing classification rules use an ACO-based procedure to create a rule in an one-at-a-time fashion. An improved search strategy has been proposed in the cAnt-MinerPB algorithm, where an
Otero, Fernando E.B., Freitas, Alex A.
core   +1 more source

Hydrometeor classification from polarimetric radar measurements: a clustering approach [PDF]

, 2015
A data-driven approach to the classification of hydrometeors from measurements collected with polarimetric weather radars is proposed. In a first step, the optimal number of hydrometeor classes (nopt) that can be reliably identified from a large set of ...
Grazioli, Jacopo, Tuia, D., A. Berne, J. Grazioli, Tuia, Devis, Berne, Alexis, Grazioli, J., Berne, A., D. Tuia   +8 more
core   +3 more sources

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

Unraveling hydrometeor mixtures in polarimetric radar measurements [PDF]

, 2018
. Radar-based hydrometeor classification typically comes down to determining the dominant type of hydrometeor populating a radar sampling volume. In this paper we address the subsequent problem of inferring the secondary hydrometeor types present in a ...
Jordi Figueras i Ventura, Jacopo Grazioli, Marco Gabella, Alexis Berne, Josué Gehring, Nikola Besic, Christophe Praz, Urs Germann   +7 more
core   +3 more sources

Dust and Primary Biological Aerosol Particles (PBAP) Effects on Sea Breeze Systems Over Houston

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Sea‐breeze‐induced convection plays a critical role in coastal weather but remains challenging to simulate due to complex aerosol–cloud interactions. Although mineral dust and primary biological aerosol particles (PBAPs) are known to act as cloud condensation nuclei and ice nucleating particles, their impacts on different convective cloud ...
Qiuyan Du, Yingxiao Zhang, Claire Pettersen, Derek J. Posselt, Mark A. Smalley, Allison L. Steiner   +5 more
wiley   +1 more source

Web page classification with an ant colony algorithm [PDF]

, 2004
This paper utilizes Ant-Miner - the first Ant Colony algorithm for discovering classification rules - in the field of web content mining, and shows that it is more effective than C5.0 in two sets of BBC and Yahoo web pages used in our experiments.
Holden, Nicholas, Alex A. Freitas, Freitas, Alex A., Nicholas Holden   +3 more
core   +1 more source