Climate Dynamics, Год журнала: 2021, Номер 58(3-4), С. 1257 - 1273
Опубликована: Сен. 20, 2021
Язык: Английский
Geophysical Research Letters, Год журнала: 2021, Номер 48(10)
Опубликована: Апрель 19, 2021
Abstract Heavy Meiyu‐Baiu rainfall occurred over central‐east China and Japan in June–July 2020. This study analyzes observational reanalysis data performs atmospheric model simulations to investigate its causes. It is found that low Arctic sea ice cover (SIC) late spring‐early summer of 2020 along the Siberian coast was an important factor. The SIC caused local warming high pressure, resulted excessive blockings East Siberia, which cold air outbreaks into region, stopped seasonal northward march front, increased thermal contrast across leading record‐breaking Our results suggest extreme partly by around through impact on blockings. As decreases under global warming, variations thus influence may weaken.
Язык: Английский
Процитировано
47
Climate Dynamics, Год журнала: 2025, Номер 63(3)
Опубликована: Фев. 26, 2025
Язык: Английский
Процитировано
1
Advances in Atmospheric Sciences, Год журнала: 2025, Номер unknown
Опубликована: Март 18, 2025
Язык: Английский
Процитировано
1
Science Bulletin, Год журнала: 2023, Номер 68(5), С. 528 - 535
Опубликована: Фев. 9, 2023
The "Arctic warming-Eurasia cooling" trend has significantly affected the changes of weather patterns and climate extremes at lower latitudes attached huge attentions. However, this winter weakened from 2012 to 2021. In same time period, subseasonal reversals between warm Arctic-cold Eurasia (WACE) cold Arctic-warm (CAWE) became more frequent intensity WACE/CAWE pattern was still comparable with that 1996 2011. This study highlighted co-occurrence variability in based on long-term reanalysis datasets Coupled Model Intercomparison Project Phase 6 simulations. preceding sea surface temperature anomalies tropical Atlantic Indian oceans had significant primary impacts early late winter, respectively, which were confirmed by numerical experiments Community Atmosphere Atmospheric Project. Their coordination worked effectively modulate phase reversal WACE CAWE just like what happened winters 2020 Findings present imply need be considered prediction mid- low latitudes.
Язык: Английский
Процитировано
17
Advances in Atmospheric Sciences, Год журнала: 2023, Номер 40(4), С. 553 - 569
Опубликована: Янв. 21, 2023
Язык: Английский
Процитировано
15
Atmospheric Research, Год журнала: 2022, Номер 283, С. 106557 - 106557
Опубликована: Дек. 5, 2022
Язык: Английский
Процитировано
20
Advances in Atmospheric Sciences, Год журнала: 2023, Номер 40(12), С. 2138 - 2153
Опубликована: Фев. 19, 2023
Язык: Английский
Процитировано
10
Climate Dynamics, Год журнала: 2024, Номер 62(6), С. 4829 - 4848
Опубликована: Фев. 3, 2024
Язык: Английский
Процитировано
4
Environmental Research Climate, Год журнала: 2024, Номер 3(4), С. 042004 - 042004
Опубликована: Ноя. 18, 2024
Abstract It is widely accepted that Arctic amplification (AA)—enhanced warming relative to global warming—will increasingly moderate cold-air outbreaks (CAOs) the midlatitudes. Yet, some recent studies also argue AA over last three decades rest of present century may contribute more frequent severe winter weather including disruptive cold spells. To prepare society for future extremes, it necessary resolve whether and midlatitude are coincidental or physically linked. Severe events in northern continents often related a range stratospheric polar vortex (SPV) configurations atmospheric blocking, but these dynamical drivers complex still not fully understood. Here we review research advances paradigms nonlinear theory blocking helps explain location, timing duration AA/midlatitude connections, vortex’s zonal asymmetric intra-seasonal variations, its southward migration continents, surface impacts. We highlight novel understanding SPV variability—polar stretching stratosphere–troposphere oscillation—that have remained mostly hidden predominant focus on sudden warmings. A physical explanation two-way vertical coupling process between highs, taking into account local conditions, remains elusive. conclude evidence exists tropical preconditioning Arctic-midlatitude climate linkages. Recent using very large-ensemble modelling provides an emerging opportunity robustly quantify internal variability when studying potential response CAOs sea-ice loss.
Язык: Английский
Процитировано
4
Journal of Geophysical Research Atmospheres, Год журнала: 2024, Номер 129(2)
Опубликована: Янв. 16, 2024
Abstract Utilizing the Open Integrated Forecasting System, responses of Ural blocking (UB) to different stratospheric warming scenarios are investigated. Numerical results show that with moderate strength in minor patterns prolongs UB duration and enhances its intensity, while strong tends shorten weaken even leading collapse events. Further diagnosis reveals planetary wave activity flux propagates downward from stratosphere troposphere after warming. Moreover, convergence is a key factor for enhancement maintenance. In addition, weakened meridional temperature gradients, decelerated zonal westerly winds, reduced potential vorticity gradient (PVy) result response strength. As strengthens, diverges, winds tropospheric mid‐latitudes accelerate PVy sector enlarges, which further weakens UB. Regarding perturbations major patterns, they have similar influences on events, is, However, strengthened would trigger re‐enhancement, closely associated anomalous activities synoptic‐scale waves induced by perturbations. These reveal events respond differently various intensities short term, makes contribution understanding stratosphere‐troposphere coupling.
Язык: Английский
Процитировано
3