Published: Dec. 6, 2024
Language: Английский
Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(8), P. 083003 - 083003
Published: July 16, 2024
Abstract Lightning has profound social implications for public safety and usually causes casualties significant damage to infrastructure. Due the advancement of both ground-based spaceborne detection technology, lightning been monitored globally in recent decades as an indicator severe weather essential variable climate change. This article reviews progress study variations their response temperature aerosols, based on data. The responses aerosol show large spatial temporal heterogeneity, with relation meteorological environmental conditions. latest research that exhibited increase some high altitude or latitude regions, such Tibetan Plateau Arctic where undergone fast warming during ecosystems is fragile. Aerosol particles play important role modulating under certain dynamical thermodynamic conditions even a global scale. projected activity will generally future but may very few exceptions. Continuous long-term observations consistent efficiency remain crucial tracking change coming decades.
Language: Английский
Citations
7
Journal of Geophysical Research Atmospheres, Journal Year: 2023, Volume and Issue: 129(1)
Published: Dec. 29, 2023
Abstract Aerosol effects on the lightning intensity and polarity of a continental supercell storm were investigated using three‐dimensional scheme within Weather Research Forecasting model. We find that both intra‐cloud (IC) cloud‐to‐ground (CG) flashes are enhanced by increasing number cloud condensation nuclei (CCN), especially percentage positive CG (+CG) strokes peaking at 42%. Electrical characteristics varied in different aerosol scenarios through microphysical processes. Added aerosols increase droplets ice‐phase hydrometeors. The greater ice‐crystal concentration larger graupel size ensure sufficient charge separation, leading to higher density more discharges. In addition, an inverted structure with strong positive‐charge region mid‐levels was formed mainly due positively charged presence supercooled water content. Positive channels originating from this propagated ground, producing +CG strokes. When low, upper much lower smaller ice‐particle Consequently, there barely any Most negative deposited negative‐charge region.
Language: Английский
Citations
11
Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 107943 - 107943
Published: Jan. 1, 2025
Language: Английский
Citations
0
Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 108029 - 108029
Published: March 1, 2025
Language: Английский
Citations
0
Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(8)
Published: April 28, 2025
Abstract The effect of anthropogenic aerosols on lightning is one the least understood aspects human‐induced climate change. Global aerosol clearly diminished during COVID pandemic by 7.6%. A pronounced decrease in global activity range 3.0%–5.8% identified from various detection systems this natural experiment. Maritime Continent chimney shows largest reduction 7.0% accompanied a drop 15%. period 2020 also experiences transition pre‐COVID El Niño to strong and sustained La Niña. Compensation for ENSO forcing implemented disclose distinct responses three chimneys competing thermodynamic effects. Our observational findings indicate marked influence scale virtue extraordinary COVID‐induced alteration.
Language: Английский
Citations
0
Meteorology and Atmospheric Physics, Journal Year: 2023, Volume and Issue: 135(4)
Published: June 26, 2023
Language: Английский
Citations
7
Journal of Geophysical Research Atmospheres, Journal Year: 2024, Volume and Issue: 129(3)
Published: Feb. 5, 2024
Abstract The Amazon Basin, which plays a critical role in the carbon and water cycle, is under stress due to changes climate, agricultural practices, deforestation. effects of thermodynamic microphysical forcing on strength thunderstorms Basin (75–45°W, 0–15°S) were examined during pre‐monsoon season (mid‐August through mid‐December), period with large variations aerosols, intense convective storms, plentiful flashes. analysis used measurements radar reflectivity, ice content (IWC), aerosol type from instruments aboard CloudSat CALIPSO satellites, flash rates ground‐based Sferics Timing Ranging Network, total optical depth (AOD) surface network meteorological re‐analysis. After controlling for available potential energy (CAPE), it was found that developed dirty (high‐AOD) conditions 1.5 km deeper, had 50% more IWC, than two times as many flashes storms clean conditions. sensitivity AOD largest low values CAPE where increases factor three observed. additional indicated these deeper systems higher vertical velocities condensation nuclei capable sustaining concentrations hydrometeors upper troposphere. Flash also be larger periods when smoke rather dust common lower troposphere, likely because smoky less stable mid‐tropospheric relative humidity.
Language: Английский
Citations
2
Atmospheric Research, Journal Year: 2024, Volume and Issue: 304, P. 107402 - 107402
Published: April 7, 2024
Language: Английский
Citations
1
Singapore Journal of Tropical Geography, Journal Year: 2024, Volume and Issue: unknown
Published: June 4, 2024
This investigation builds upon and extends prior lightning research in the Bangkok Metropolitan Region (BMR) through reconstruction of thunderstorm distribution, utilizing a novel tracking algorithm. Five years (2016–2020) stroke data from Global Lightning Dataset (GLD360) were used to identify 52 608 thunderstorms. Optimized hotspot analyses, track densities, analyses thunderstorms with respect winds, landcover, seasons performed. Our findings suggest that significant modification distribution within region was due urban landcover impacts on local environment. Thunderstorm intensity, as measured by counts length, also appeared be sensitive The highlighted areas prone hazards such flash flooding. By visualizing grouped initiation hotspots density corridors identified. These augmented production tended occur during specific months given seasonal monsoon wind regime occurring across BMR. As urbanization BMR continues, geospatial assessment is important inform forecast meteorologists, planners, government officials, others who play critical role developing strategies, policies insfrastructure could mitigate impacts.
Language: Английский
Citations
1
Applied Sciences, Journal Year: 2024, Volume and Issue: 14(12), P. 5305 - 5305
Published: June 19, 2024
Pyrocumulonimbus (pyroCb) thunderclouds, produced from extreme bushfires, can initiate frequent cloud-to-ground (CG) lightning strikes containing extended continuing currents. This, in turn, ignite new spot fires and inflict massive harm on the environment infrastructures. This study presents a 3D numerical thundercloud model for estimating of different types its striking zone conceptual tripole structure which is theorized to produce phenomenon pyroCb storms. More emphasis given lower positive charge layer, impacts strong wind shear are also explored thoroughly examine various electrical parameters including longitudinal electric field, potential, surface density. The simulation outcomes thunderclouds with confirm presence negative field initiation at cloud’s region. accompanied by enhancing region, resulting an overall potential increase. Consequently, density appears underneath has induce (+CG) flashes. With extension upper layers pyroCb, becomes reduce absolute value would generate (−CG) A subsequent parametric carried out considering correlation between aerosol concentration investigate sensitivity electrification under influence high conditions. suggested establish basis identifying area impacted could be expanded analyze dangerous conditions that may arise energy farms or power substations times severe events.
Language: Английский
Citations
0