Quantifying the impact of infrastructure-based urban adaptation strategies on summer air temperature and heat exposure risk in Chinese cities

Advances in Climate Change Research, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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

Atmosphere, Год журнала: 2025, Номер 16(4), С. 434 - 434

Опубликована: Апрель 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.

Язык: Английский

Global prevalence of compound heatwaves in recent decades

Advances in Climate Change Research, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский