Disagreement in Detected Heatwave Trends Resulting From Diagnostic Methods

Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(6)

Published: March 10, 2025

Abstract Heatwaves pose increased risk to ecosystem and society. Advanced event‐based detection methods offer novel insights into the spatiotemporal dynamics of heatwaves. However, robust assessments heatwave trends remain challenging due sensitivity results parameter selection, including connected structure, area threshold, overlap ratio. Here, we employed 3‐dimensional algorithm (3DCDA) explore dependency identifications on various combinations. The indicate that metrics are sensitive 3DCDA parameters, with appropriate combination for large‐scale heatwaves being ratio 40%–50%, threshold 10 6 km 2 , 10‐connected structure. Based this configuration, discovered significant increasing in frequency, projection total magnitude, while observed a decrease maximum intensity mean both annually during summer. These findings highlight critical importance selection analysis other extreme events.

Language: Английский

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Increasing trends of land and coastal heatwaves under global warming

Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 108007 - 108007

Published: Feb. 1, 2025

Language: Английский

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Role of Aerosols on Prolonged Extreme Heatwave Event over India and its Implication to Atmospheric Boundary Layer

Atmospheric Pollution Research, Journal Year: 2025, Volume and Issue: unknown, P. 102513 - 102513

Published: March 1, 2025

Language: Английский

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El Niño-Southern Oscillation and its impact on population exposure to ozone pollution and heatwave compound events in China

Atmospheric Environment, Journal Year: 2025, Volume and Issue: unknown, P. 121209 - 121209

Published: March 1, 2025

Language: Английский

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Characteristics and Driving Mechanisms of Heatwaves in China During July and August

Atmosphere, Journal Year: 2025, Volume and Issue: 16(4), P. 434 - 434

Published: April 8, 2025

Against the backdrop of global warming, heatwaves in China have become more frequent, posing serious risks to public health and socio-economic stability. However, existing identification methods lack precision, driving mechanisms remain unclear. This study applies Excess Heat Factor (EHF) characterize across from 2013 2023, analyzing their spatiotemporal patterns exploring key drivers such as atmospheric circulation soil moisture. Key findings reveal significant regional differences: (1) Frequency Duration—The southeastern coastal regions (e.g., Yangtze River Delta) experience higher annual heatwave frequencies (1.75–3.5 events) but shorter durations (6.5–8.5 days). In contrast, arid northwest has both frequent (1.5–3.5 events per year) prolonged (8.5–14.5 days) heatwaves, while Tibetan Plateau sees weaker events. (2) Driving Factors—Heatwaves Delta are primarily driven by an intensified subtropical high, leading subsidence clear-sky conditions. Fujian, anomalous low-level winds enhance heat accumulation, areas show strong moisture–temperature coupling, where drier soils intensify warming. Conversely, moisture a influence on Plateau, suggesting dominant control. It is important note that EHF index used this does not directly account for humidity, which may limit its applicability humid regions. Additionally, ERA5 ERA5-Land reanalysis data were systematically validated against ground observations, introducing potential uncertainties.

Language: Английский

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Frequent land-ocean transboundary migration of tropical heatwaves under climate change

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 10, 2025

Language: Английский

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The influence of El Niño on springtime synoptic-scale precipitation extremes in Southeastern China: insights from CMIP6 model simulations

Climate Dynamics, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Language: Английский

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