Distinct Impacts of ENSO on Haze Pollution in the Beijing–Tianjin–Hebei Region between Early and Late Winters

Journal of Climate, Год журнала: 2021, Номер 35(2), С. 687 - 704

Опубликована: Ноя. 10, 2021

Abstract The Beijing–Tianjin–Hebei (BTH) region has encountered increasingly severe and frequent haze pollution during recent decades. This study reveals that El Niño–Southern Oscillation (ENSO) distinctive impacts on interannual variations of over BTH in early late winters. impact ENSO the is strong winter, but weak winter. In ENSO-related sea surface temperature anomalies generate double-cell Walker circulation anomalies, with upward motion tropical central-eastern Pacific Indian Ocean, downward western Pacific. ascending enhanced atmospheric heating Ocean trigger teleconnection propagating from north to East Asia, result generation an anticyclonic anomaly Northeast Asia. associated southerly west side lead more serious via reducing wind speed increasing low-level humidity thermal inversion. contribution formation Asia winter can be confirmed by model numerical experiments. vertical precipitation are related ENSO. As such, cannot induce a clear teleconnection, thus BTH. Further analysis shows stronger ENSO-induced partially due higher mean SST there. Significance Statement There exist large discrepancies regarding events wintertime North China. Several studies have indicated However, some argued exert occurrence this study, we present evidence demonstrate China Specifically, whereas fairly Results could reconcile discrepancy previous about

Язык: Английский

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Towards influence of Arabian Sea SST anomalies on the withdrawal date of Meiyu over the Yangtze-Huaihe River basin

Atmospheric Research, Год журнала: 2020, Номер 249, С. 105340 - 105340

Опубликована: Окт. 28, 2020

Язык: Английский

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The differential impact of 2015–2020 El Niño and El Niño Modoki on warm- and cold-season PM2.5 concentration and distribution across China

Atmospheric Environment, Год журнала: 2023, Номер 305, С. 119816 - 119816

Опубликована: Апрель 26, 2023

Язык: Английский

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Decadal change of extreme consecutive dry days in spring over the middle and lower reaches of the Yangtze River around the early 2000s: The synergistic effect of mega-El Niño/Southern Oscillation, Atlantic Multidecadal Oscillation, and Arctic sea ice

Atmospheric Research, Год журнала: 2021, Номер 266, С. 105936 - 105936

Опубликована: Ноя. 24, 2021

Язык: Английский

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Synergistic impacts of westerlies and monsoon on interdecadal variations of late spring precipitation over the southeastern extension of the Tibetan Plateau

International Journal of Climatology, Год журнала: 2022, Номер 42(14), С. 7342 - 7361

Опубликована: Апрель 10, 2022

Abstract Based on multiple long‐term observational and reanalysis datasets, this study investigated the characteristics physical mechanisms of interdecadal variations in late spring (i.e., May) precipitation (LSP) over southeastern extension Tibetan Plateau (SETP) since 1900. It was revealed that by large, LSP SETP experienced decrease during period preceding 1927, 1962–1988, 2004 onwards, but saw an increase periods 1928–1961 1989–2003. The atmospheric circulations responsible for were also analysed. These analyses identified significant synergistic impacts decreased mid‐latitude upstream westerlies increased low‐latitude monsoonal southerlies Central North Bay Bengal (CNBOB) precipitation, suggesting striking interactions between extratropical eastward cold air tropical northward warm/humid air. Further modelling evidence suggested Atlantic Multidecadal Oscillation (AMO) likely to be a salient oceanic driver synergy CNBOB southerlies. elevated sea surface temperature anomalies associated with warm phase AMO could spark favourable local anomalies, forcing upper‐tropospheric, planetary‐scale teleconnection emanating from east sector, which may serve as effective bridge linking remote signal around timescales. Our findings provided new insights into understanding roles monsoons modulation SETP, prior peak Asian summer monsoon season.

Язык: Английский

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Impact of early winter North Atlantic Oscillation on the dramatic alternation of seesaw haze intensity between late winter months in the North China Plain

Atmospheric Research, Год журнала: 2022, Номер 281, С. 106483 - 106483

Опубликована: Окт. 29, 2022

Язык: Английский

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Future changes in the meteorological potential for winter haze over Beijing during periods of peak carbon emissions and carbon neutrality in China projected by Coupled Model Intercomparison Project Phase 6 models

International Journal of Climatology, Год журнала: 2021, Номер 42(4), С. 2065 - 2082

Опубликована: Авг. 20, 2021

Abstract Hazy conditions have a significant impact on the environment and societal development. Their occurrence persistence depend largely climatological conditions, including important role of climate change. Based monthly data from 15 Coupled Model Intercomparison Project Phase 6 (CMIP6) models under three Tier 1 scenarios (SSP1–2.6, SSP2–4.5, SSP5–8.5), meteorological potential for winter haze pollution over Beijing was assessed during periods peak carbon emissions (P CP ; 2021–2030) neutrality (approximate net‐zero emissions) CN 2051–2060) in China. The results show that possible high‐emission strategy P may not obviously enhance hazy near future. Rather, scenario this period decrease is favourable enhanced by inducing Northeast Asia cyclonic anomaly, compared to situations with medium emissions. Further analyses indicated that, continued sustainable pathway (SSP1–2.6 plus SSP1–2.6 better simulating effects approximate through model results), atmospheric such as East Asian monsoon well decadal oceanic forcings mega‐El Niño warm Atlantic Multidecadal Oscillation, which are conducive more frequent haze, significantly suppressed farther future . Under circumstances, situ highly repressed, suggesting critical positive low‐carbon policy advocated China suppressing longer‐term Beijing. In contrast, discontinued (SSP2–4.5/SSP5–8.5 ). Our findings demonstrate insignificant near‐future exacerbation, an suppress , highlighting significance selections.

Язык: Английский

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Observational Analysis of Surface Ozone Variability in China from 2015 to 2020: Insights from Consecutive ENSO Episodes

Atmospheric Pollution Research, Год журнала: 2024, Номер 15(8), С. 102185 - 102185

Опубликована: Май 16, 2024

Язык: Английский

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Potential remote forcing of North Atlantic SST tripole anomalies on the seesaw haze intensity between late winter months in the North China plain: A case study

Atmospheric Science Letters, Год журнала: 2023, Номер 24(9)

Опубликована: Апрель 26, 2023

Abstract This study identified a prominent temporal seesaw haze intensity case that occurred between the late winter months of 2010 in North China Plain (NCP), featuring considerably suppressed January and enhanced adjacent month February 2011. We suggest dramatic alternations atmospheric oceanic anomalies played fundamental roles forming this case, rather than changes manmade emission anomalies. The 2011 was tied to an equivalent barotropic cyclonic anomaly dominated NCP its surroundings, which generated situ haze‐suppressed meteorology characterized by strengthened lower‐level northerly with cold dry conditions, as well elevated boundary layer height destabilized stratification. In stark contrast, connected anticyclonic anomaly, linking haze‐favourable opposite pronounced Atlantic sea surface temperature (SST) tripole anomalies, positive tropical mid‐latitudinal negative subtropical Atlantic, made significant contribution above‐mentioned case. Diagnostic analyses suggested SST were linked Oscillation (NAO)‐like pattern, acted source Rossby wave train generate concurrent over NCP. February, although NAO‐like pattern drastically dampened, centred southeast Yamal Peninsula critical role relaying impact thus inducing meteorology. Consequently, could exert effective modulation effect on generation intensity. proposed mechanism further verified using Community Earth System Model Large Ensemble Numerical Simulation (CESM‐LENS) datasets.

Язык: Английский

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A possible remote tropical forcing for the interannual variability of peak summer muggy hot days in Northeast China

Atmospheric Research, Год журнала: 2021, Номер 264, С. 105860 - 105860

Опубликована: Сен. 21, 2021

Язык: Английский

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