Effect of Oceanic Stochastic Forcing on Wintertime Atmospheric Decadal Variability Over Midlatitude North Pacific

Tao, Lingfeng; Sun, Xiaoxia; Yang, Xiu‐Qun; Fang, Jiabei; Zhang, Zhiqi

doi:10.1029/2022jd037594

Cited by 2 publications

(3 citation statements)

References 108 publications

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“…Mainly modulated by the anomalous air temperature advection, the air temperature is below and above normal over the Gulf Stream and its northeast (Figure 3e). Similar results have also been found in observational and modeling works focusing on the winter North Pacific area (Tao et al., 2019, 2022, 2023).…”

Section: Reversal Of Midlatitude Air‐sea Interaction Direction Around...supporting

confidence: 89%

Role of North Atlantic Tripole SST in Mid‐Winter Reversal of NAO

Tao

Fang

Yang

et al. 2023

Geophysical Research Letters

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North Atlantic Oscillation (NAO) has a significant impact on surrounding winter weather and climate. However, the causes of its occasional reversal between early and late winter remain unclear. This study proposes a mechanism for the mid‐winter reversal of NAO from the perspective of local midlatitude air‐sea interaction. Strong sea surface temperature (SST) tripole events, which are defined by empirical orthogonal function of winter‐mean interannual North Atlantic SST anomalies, are primarily induced by NAO in early winter and peak in January. In late winter, the persistent SST tripole exerts active feedback on atmosphere through diabatic heat and transient eddy forcing. The resulting atmospheric circulation anomalies exhibit an almost reversed NAO pattern in February, which forms a wavetrain originating above the Gulf Stream and propagating to the Middle East and weakens the former SST tripole. Consequently, significant reversals of air temperature anomalies occur in Europe and the Caspian Sea area between February and December.

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Section: Reversal Of Midlatitude Air‐sea Interaction Direction Around...supporting

confidence: 89%

Role of North Atlantic Tripole SST in Mid‐Winter Reversal of NAO

Tao

Fang

Yang

et al. 2023

Geophysical Research Letters

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“…X. Li & Conil, 2003;Peng et al, 1997;Sein et al, 2018). Therefore, a comprehensive understanding of how the midlatitude SSTAs affect the atmosphere requires considering both the roles of diabatic heat forcing and atmospheric transient eddy forcing (L. Chen et al, 2020;Fang et al, 2021;Tao et al, 2023Tao et al, , 2020.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, changes in low‐level air temperature can influence the atmospheric baroclinicity, leading to anomalous atmospheric transient eddy activities in upper troposphere (L. Chen et al., 2020; Fang et al., 2021; Kushnir et al., 2002; Z. X. Li & Conil, 2003; Peng et al., 1997; Sein et al., 2018). Therefore, a comprehensive understanding of how the midlatitude SSTAs affect the atmosphere requires considering both the roles of diabatic heat forcing and atmospheric transient eddy forcing (L. Chen et al., 2020; Fang et al., 2021; Tao et al., 2023, 2020).…”

Section: Introductionmentioning

confidence: 99%

Cross‐Season Effect of Spring Kuroshio‐Oyashio Extension SST Anomalies on Following Summer Atmospheric Circulation

Tao,

Sun,

Yang

et al. 2024

Geophysical Research Letters

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The long‐term memory of the ocean makes sea surface temperature anomalies (SSTAs) become a significant predictor for the subsequent atmosphere, and the tropical ocean is primarily regarded as a major source of atmospheric anomalies. While in North Pacific, the local midlatitude SSTAs also have large contributions but have not been adequately considered yet. We discover a strong connection between the Kuroshio‐Oyashio Extension (KOE) SSTAs in spring and the local atmospheric circulation anomalies in following summer at interannual timescale, wherein, the spring KOE SSTAs are generally independent of tropical ocean, and they are primarily induced by the concurrent atmospheric anomalies via surface heat flux and ocean dynamic processes. The spring KOE SSTAs can persist to summer, and then generate nearly reversed whole‐layer atmospheric circulation anomalies in their north side through both diabatic heating and atmospheric transient eddy forcing. Consequently, precipitation anomalies in Pan‐Pacific regions are distinctly modulated from spring to summer.

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Effect of Oceanic Stochastic Forcing on Wintertime Atmospheric Decadal Variability Over Midlatitude North Pacific

Abstract: During the past decades, a number of observational studies revealed that the midlatitude air-sea system has an evidently consistent variability on decadal and interdecadal timescale in both oceanic and atmospheric spatio-temporal structures (

Cited by 2 publications

References 108 publications

Role of North Atlantic Tripole SST in Mid‐Winter Reversal of NAO

Role of North Atlantic Tripole SST in Mid‐Winter Reversal of NAO

Cross‐Season Effect of Spring Kuroshio‐Oyashio Extension SST Anomalies on Following Summer Atmospheric Circulation

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