Results 41 to 50 of about 4,256 (162)

Unusual vertical oscillations of a radiosonde

Weather, EarlyView.
In summer 2023 in southern England, several unusual balloon launches were observed which descended for a few minutes before resuming ascent. This unusual vertical oscillation was repeated several times in a ‘roller‐coaster’‐like pattern. This article discusses the behaviour of the balloons.
Caleb Miller, Chun Hay Brian Lo, Stephen Burt, Ryan R. Neely III   +3 more
wiley   +1 more source

Analysis of Wind Field Response Characteristics of Tethered Balloon Systems

Aerospace
Tethered balloon systems encounter various complex wind field environments during flight. To investigate the conditions under which the system can operate safely and smoothly, a longitudinal dynamic model for tethered balloon systems is established.
Ce Pang, Zeqing He, Kaiyin Song, Shenghong Cao   +3 more
doaj   +1 more source

Performance investigation of a gasifier and gas engine system operated on municipal solid waste briquettes

International Journal of Renewable Energy Development, 2019
Municipal solid waste (MSW) and charcoal can be used as a substitute fuel in a gas engine. In this work, performance of a downdraft gasifier and gas engine system operated on MSW briquette fuel was investigated.
Nigran Homdoung, Nattawud Dussadee, Kittikorn Sasujit, Tanongkiat Kiatsiriroat, Nakorn Tippayawong   +4 more
doaj   +1 more source

Fundamental Importance of Convective Downdrafts and Mass Recycling Within the Tropical Cloud Cluster and the Typhoon-Hurricane

Tropical Cyclone Research and Review, 2012
: Most meteorologists think of the organized tropical cloud cluster and typhoon-hurricane weather system as having a strong transverse (or ‘in-up-and-out’) circulation of low-level frictionally driven inflow, upward vertical motion in cloud areas, and ...
William M. Gray
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

A relaxed eddy accumulation flask sampling system for ¹⁴C-based partitioning of fossil and non-fossil CO₂ fluxes [PDF]

Atmospheric Measurement Techniques
A relaxed eddy accumulation (REA) system was developed and tested, enabling conditional sampling of air for subsequent 14CO2 analysis. This allows a 14C-based estimation of fossil fuel CO2 concentrations in the collected air samples and, thus, an ...
A.-K. Kunz, A.-K. Kunz, L. Borchardt, A. Christen, J. Della Coletta, M. Eritt, X. Gutiérrez, J. Hashemi, J. Hashemi, R. Hilland, A. Jordan, R. Kneißl, V. Legendre, I. Levin, S. Preunkert, P. Rubli, S. Stagakis, S. Hammer   +17 more
doaj   +1 more source

Responses of Boundary Layer Cloud Structure and Particle Budget to Aerosol Sources During Arctic Marine Cold‐Air Outbreaks

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Marine cold‐air outbreaks (MCAOs) strongly modulate Arctic air‐sea exchange, yet their mixed‐phase clouds remain difficult to represent in Earth system models. We simulate an MCAO case using Lagrangian large‐eddy simulations that couple double‐moment microphysics with prognostic aerosol and ice formation parameterizations. We then apply a self‐
Peng Wu, Mikhail Ovchinnikov, Peter N. Blossey, Adam C. Varble, Jingjing Tian, Heng Xiao, Johannes Mülmenstädt, Jerome Fast   +7 more
wiley   +1 more source

CFD-Based Energy and Thermal Performance Evaluation of a Coconut Shell-Fired Downdraft Kiln for Sustainable Brick Production [PDF]

E3S Web of Conferences
Enhancing energy efficiency and reducing environmental impact in energy-intensive industries are essential for sustainable energy systems. This study numerically evaluates the energy and thermal performance of a coconut shell-fired downdraft brick kiln ...
Angga Gerelizza T., Loretero Michael E., Cayme Liregine S.   +2 more
doaj   +1 more source

Moist Available Potential Energy, Multiscale Energetics and the Multiscale Dynamics Governing an Extremely Devastating Rainstorm

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract An unprecedented record‐breaking extreme hourly rainfall event (201.9 mm/hr) occurred on 20 July 2021, at the Zhengzhou Station, China. In previous studies, a meso‐γ $\gamma $‐scale convective storm is found to be the direct process causing the rainfall; also found is the impact of processes on other scales (synoptic‐ and meso‐scales), in ...
Jiwang Ma, Yineng Rong, X. San Liang, Renhe Zhang, Xu Tang   +4 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