North Atlantic SSTs as a Link between the Wintertime NAO and the Following Spring Climate

Bulić, Ivana Herceg; Kucharski, Fred

doi:10.1175/jcli-d-12-00273.1

Cited by 30 publications

(21 citation statements)

References 58 publications

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“…Actually, the positive TriNA in May was following the strong positive NAO in winter of 2017/2018 ( Figure 5b). As documented by some previous studies, the winter NAO could produce the spring triple SSTA mode in the North Atlantic, which induced the downstream wave train over the Eurasian continent (Herceg-Bulić & Kucharski, 2014;Hu et al, 2011;Wu et al, 2009;Wu & Wu, 2019;Zuo et al, 2012). A similar behavior has also been reported in boreal autumn (Wang et al, 2018).…”

Section: Linkage To Sst Anomaly In the North Atlanticsupporting

confidence: 78%

Extremely Late Onset of the 2018 South China Sea Summer Monsoon Following a La Niña Event: Effects of Triple SST Anomaly Mode in the North Atlantic and a Weaker Mongolian Cyclone

Liu

Zhu

2019

Geophysical Research Letters

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The onset of South China Sea (SCS) summer monsoon (SCSSM) in June 2018 was extremely late following a La Niña event, indicating a breakdown in the traditional positive relationship between ENSO and SCSSM onset. Although the weaker western Pacific subtropical high in early May facilitated the SCSSM establishment, the persistent weaker Mongolian cyclone featured by an anomalous barotropic anticyclone over Northeast Asia during mid–late May dramatically postponed the SCSSM onset in 2018. This not only reduced upper‐tropospheric divergence over the SCS, which suppressed monsoon convection by attenuating the South Asian High, but cooled the mid–upper troposphere to decrease the in‐situ vertical easterly shear. The convection over the Maritime Continent was therefore trapped in the tropics, which further delayed the SCSSM onset via an enhanced local Hadley cell. It suggests a potential effect of triple SSTA mode in North Atlantic on the SCSSM onset by changing the mid‐latitudinal circulation.

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Section: Linkage To Sst Anomaly In the North Atlanticsupporting

confidence: 78%

Extremely Late Onset of the 2018 South China Sea Summer Monsoon Following a La Niña Event: Effects of Triple SST Anomaly Mode in the North Atlantic and a Weaker Mongolian Cyclone

Liu

Zhu

2019

Geophysical Research Letters

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“…With respect to the SST anomaly, more research may be carried out on any temporal lead between this anomaly and the response in spring precipitation over southern China. For example, Herceg‐Bulić and Kucharski () observed that the wintertime North Atlantic Oscillation has an impact on the spring climate over Europe through the North Atlantic SST, which might also influence the spring rainfall over southern China due to the EU pattern. We will undertake a similar analysis of the precursory signals for southern China in future research.…”

Section: Summary and Discussionmentioning

confidence: 99%

Inter‐decadal change of leading pattern of spring rainfall over southern China during 1901–2010

Zou

Qiao

Jian

et al. 2018

Intl Journal of Climatology

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Four distinctive periods (epochs) of spring rainfall over southern China have been identified: 1901–1937, 1938–1958, 1959–1994 and 1995–2010. During the first and third epochs, the centre of the inter‐annual variation of spring rainfall is located in the South China (SC) region, mainly influenced by low‐latitude climate forcing. During the second and fourth epochs, the centre is located in the mid‐lower reaches of the Yangtze River (MLRYR) region, mainly attributed to mid‐ and high‐latitude forcing.

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“…A discussion on the suitability of the model to reproduce realistic transient eddy feedbacks can be found in Abid et al (2015). Examples of the North Atlantic storm tracks response to surface forcings in the model can be found in Kucharski and Molteni (2003) and in Herceg-Bulić and Kucharski (2014).…”

Section: Methodsmentioning

confidence: 99%

The transient atmospheric response to a reduction of sea‐ice cover in the Barents and Kara Seas

Ruggieri

Kucharski

Buizza

et al. 2017

Quart J Royal Meteoro Soc

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The observed reduction of Arctic sea-ice has drawn a lot of interest for its potential impact on mid-latitude weather variability. One of the outstanding challenges is to achieve a deeper understanding of the dynamical processes involved in this mechanism.To progress in this area, we have designed and performed an experiment with an intermediate complexity atmospheric model. The experiment shows a transient atmospheric response to a surface diabatic heating in the Barents and Kara seas leading to an anomalous circulation first locally, then over the polar region and finally over the Euro-Atlantic sector. A hypothesis that explains the mechanisms for the propagation of the signal is put forward. The discussion of this hypothesis provides an insight into the nature of the link between sea-ice forcing and the modes of internal variability of the atmosphere. We demonstrate that after removal of sea ice in the Barents and Kara seas, first the linear atmospheric response dominates and is confined in the proximity of the heating area, then a large-scale response, associated also to eddy-feedback, is found and finally anomalies reach the lower-stratosphere and show a hemispheric pattern in the troposphere. These results identify the drivers of the tropospheric connection between sea-ice variability and the North Atlantic Oscillation and highlight the role of the lower stratosphere.

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North Atlantic SSTs as a Link between the Wintertime NAO and the Following Spring Climate

Cited by 30 publications

References 58 publications

Extremely Late Onset of the 2018 South China Sea Summer Monsoon Following a La Niña Event: Effects of Triple SST Anomaly Mode in the North Atlantic and a Weaker Mongolian Cyclone

Extremely Late Onset of the 2018 South China Sea Summer Monsoon Following a La Niña Event: Effects of Triple SST Anomaly Mode in the North Atlantic and a Weaker Mongolian Cyclone

Inter‐decadal change of leading pattern of spring rainfall over southern China during 1901–2010

The transient atmospheric response to a reduction of sea‐ice cover in the Barents and Kara Seas

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