Journal of Hydrology, Journal Year: 2024, Volume and Issue: 631, P. 130827 - 130827
Published: Feb. 2, 2024
Language: Английский
Environmental Research Letters, Journal Year: 2023, Volume and Issue: 18(4), P. 044025 - 044025
Published: March 21, 2023
Abstract Eastern China experienced persistent regional extreme heatwaves in the summer of 2022, with disparate spatial features and formation mechanisms different months. We quantitatively assessed relative contributions three oceans, i.e. tropical Indian Ocean Pacific North Atlantic, local soil moisture–temperature feedback using linear regression. The results showed that monthly mean atmospheric circulation anomalies failed to explain heatwave June 2022. combined contribution Indo-Pacific Atlantic sea surface temperature (SSTAs), together feedback, explaining approximately 10% anomalies. In July, SSTAs promoted anomalous heat via meridional originating Maritime Continent, accounting for anomalies, contributing same percentage by a mid-latitude steady Rossby wave. Local accounted 42% produced strong western anticyclone August, but their direct was negligible. contributed 9% total 66%, suggesting July drought exerted significant impact on subsequent August heatwave. Global warming has greatly facilitated heatwaves, about 30%–40% these events These also suggest climatic effects are evident month-to-month variation summer. Our thus contribute understanding prediction China.
Language: Английский
Citations
102
npj Climate and Atmospheric Science, Journal Year: 2023, Volume and Issue: 6(1)
Published: May 26, 2023
Abstract In July-August 2022, Yangtze River Valley (YRV) experienced unprecedented hot summer, with the number of heatwave days exceeding climatology by four standard deviations. The heatwaves and associated severe droughts affected about 38 million people caused devastating economic losses five billion US dollars. Here we present convergent empirical modelling evidence to show that record-breaking Pakistan rainfall, along 2022 tripe-dip La Niña, produces anomalous high pressure over YRV, causing intense heatwaves. Niña-induced second-highest sea surface temperature gradient in equatorial western Pacific suppresses convection extends subtropical westward. More importantly, tremendous diabatic heating rainfall reinforces downstream Rossby wave train, extending upper-level South Asia High eastward controlling entire YRV. overlay two high-pressure systems sustains sinking motion increases solar radiation reaching ground, recurrent heat waves.
Language: Английский
Citations
102
Science Bulletin, Journal Year: 2023, Volume and Issue: 68(13), P. 1337 - 1339
Published: May 30, 2023
Language: Английский
Citations
60
Agricultural and Forest Meteorology, Journal Year: 2023, Volume and Issue: 344, P. 109799 - 109799
Published: Nov. 10, 2023
Language: Английский
Citations
51
Atmospheric Research, Journal Year: 2023, Volume and Issue: 293, P. 106931 - 106931
Published: July 20, 2023
The warming of the global climate system is expected to result in significant socio-economic stress, primarily through occurrence extreme weather and events, with potential for severe impacts on societies. This was evidenced by vulnerability European nations during 2003 summer heatwave, which resulted death tens thousands individuals due heat-related complications. In this analysis, we examine 2022 Spain, a Mediterranean country that among most impacted effects change. A distinct pattern subtropical ridge 500 hPa geopotential height, typically linked heatwaves Iberian Peninsula (IP), atmospheric blocking North Atlantic region facilitated southerly flow exceptionally warm air masses from Africa towards IP, contributing sustained high temperatures throughout season. Our results show Spain experienced record-breaking nearly half favored more frequent, intense, longer-lasting compared previous historical records available 1893. general, despite normal rainfall conditions, extremely led intense drought conditions areas. Finally, paleoclimatic suggest average temperature unprecedented within last 700 years, driest 279 NE Spain. These findings highlight need measures mitigate heat at-risk populations, increase resilience adaptation change future.
Language: Английский
Citations
48
Advances in Atmospheric Sciences, Journal Year: 2023, Volume and Issue: 40(11), P. 1941 - 1951
Published: Oct. 14, 2023
Language: Английский
Citations
48
npj Climate and Atmospheric Science, Journal Year: 2023, Volume and Issue: 6(1)
Published: Oct. 6, 2023
Abstract It remains a major challenge to attribute heatwave’s lifecycle characteristics quantitatively interwoven atmospheric and surface actions. By constructing process-resolving, energetics-based attribution framework, here we delineate the of record-breaking 2022 mega-heatwave over central-eastern China from local energetics perspective. is found that cloudlessness induced radiative heating dynamics dominate total energy buildup during developing stage, while land-atmosphere coupling horizontal advection act most effectively sustain terminate heatwave, respectively. A reduction in anthropogenic aerosols provides persistent positive contribution event, suggesting pollution mitigation measures may actually increase amplitudes future heatwaves. With this initial efforts are made unravel culprits model’s sub-seasonal prediction mega-heatwave, demonstrating framework’s potential for efficiently detecting origins climate extremes assessing impacts policies sustainable development.
Language: Английский
Citations
46
Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)
Published: Aug. 22, 2023
Recent temperature extremes have shattered previously observed records, reaching intensities that were inconceivable before the events. Could possibility of an event with such unprecedented intensity as 2021 Pacific Northwest heatwave been foreseen, based on climate model information available event? scientific community quantified its potential current generation models? Here, we demonstrate how ensemble boosting approach can be used to generate physically plausible storylines a hotter than in Northwest. We also show heatwaves much greater ever are possible other locations like Greater Chicago and Paris regions. In order establish confidence 'black swan'-type events, different lines evidence need combined along process understanding make this robust actionable for stakeholders.
Language: Английский
Citations
39
Science Bulletin, Journal Year: 2023, Volume and Issue: 68(19), P. 2160 - 2163
Published: Aug. 7, 2023
Language: Английский
Citations
37
Weather and Climate Extremes, Journal Year: 2023, Volume and Issue: 40, P. 100572 - 100572
Published: May 20, 2023
Historical extreme heatwaves struck the Yangtze River Valley (YRV) in boreal summer of 2022, severely impacting agricultural production, electricity supply, and resident health China. This study shows that recurred over YRV with distinct subseasonal processes. In early summer, from 14 June to 18 July, two were embedded a mid-latitude 10–25-day intraseasonal oscillation (ISO), hot-and-wet anomalies persisted YRV. A self-sustaining mechanism between "cold vortex" Northeast China "heat dome" around maintained this bi-weekly ISO. It fueled by modulating meridional advection upper-tropospheric potential vorticity, which firstly warmed air via adiabatic processes then later diabatic heating. late 30 July 29 August, 30–50-day ISO impacted heatwave drought originated monsoon convection tropics, regulated monsoonal circulation enhanced intensifying descending motion heating The alternation ISOs accompanied northward migration subtropical westerly jet East Asia. combination above-normal moderate led three consecutive 2022.
Language: Английский
Citations
36