Interdecadal unstationary relationship between NAO and east China's summer precipitation patterns

Gu, W; Li, Chongyin; Li, Weijing; Zhou, Wen; Chan, Johnny C. L.

doi:10.1029/2009gl038843

Cited by 75 publications

(33 citation statements)

References 13 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, the (lagged) impact of the NAO defined over months/seasons other than the canonical winter has been noted. Gu et al (2009) found a link between January-March NAO and the main modes of summer precipitation variability over China, while the spring NAO was associated to the following summer's EASM rainfall and circulation via changes in the North Atlantic sea surface temperatures (SSTs). In particular, Wu et al (2009) showed that the Spring NAO and ENSO can be used as predictors to develop a simple forecast model for EASM strength.…”

mentioning

confidence: 99%

On the link between the subseasonal evolution of the North Atlantic Oscillation and East Asian climate

Bollasina

Messori

2018

Clim Dyn

View full text Add to dashboard Cite

We analyse the impact of the North Atlantic Oscillation (NAO) on the climate of East Asia at subseasonal time scales during both winter and summer. These teleconections have mainly been investigated at seasonal and longer time scales, while higher-frequency links are largely unexplored. The NAO is defined using extended empirical orthogonal functions on pentad-mean observations, which allows to elucidate the oscillation's spatial and temporal evolution and clearly separate the development and decay phases. The downstream dynamical imprint and associated temperature and precipitation anomalies are quantified by means of a linear regression analysis. It is shown that the NAO generates a significant climate response over East Asia during both the dry and wet seasons, whose spatial pattern is highly dependent on the phase of the NAO's life cycle. Temperature and precipitation anomalies develop concurrently with the NAO mature phase, and reach maximum amplitude 5-10 days later. These are shown to be systematically related to mid and high-latitude teleconnections across the Eurasian continent via eastward-propagating quasi-stationary Rossby waves instigated over the Atlantic and terminating in the northeastern Pacific. These findings underscore the importance of rapidly evolving dynamical processes in governing the NAO's downstream impacts and teleconnections with East Asia.

show abstract

mentioning

confidence: 99%

On the link between the subseasonal evolution of the North Atlantic Oscillation and East Asian climate

Bollasina

Messori

2018

Clim Dyn

View full text Add to dashboard Cite

show abstract

“…The December NAO has a delayed impact on summer precipitation in Korea and part of eastern China (Sung et al 2006). The out-of-phase summer precipitation pattern between the Yangtze River Valley and Southeast China is related to the March NAO, while the out-of-phase summer precipitation pattern between North China and the Yangtze River Delta is related to the January NAO (Gu et al 2009). …”

Section: Introductionmentioning

confidence: 96%

“…Sung et al (2006) uncovered an abruptly weakened correlation between the December NAO and the June precipitation in South China after the early 1980s. The influence of the NAO on East China's summer precipitation patterns is interdecadal nonstationary (Gu et al 2009). …”

Section: Introductionmentioning

confidence: 98%

Nonstationary impact of the winter North Atlantic Oscillation and the response of mid-latitude Eurasian climate

Shi

Wang

et al. 2015

Theor Appl Climatol

View full text Add to dashboard Cite

The North Atlantic Oscillation (NAO), although a local atmospheric mode over the North Atlantic Ocean, plays an important remote role in the Eurasian climate. However, the link between the NAO and Eurasian climate might be unstable.Here, we present a study on the relationship between the winter NAO and mid-latitude Eurasian climate, especially the midlatitude East Asian precipitation, mainly based on meteorological data and output from an 1155-year-long coupled oceanatmosphere model simulation. The results show that the winter NAO exerts a remarkable effect on the changes in mid-latitude Eurasian climate; however, the impact of the NAO is nonstationary. According to the model output, the impact of the NAO varies synchronously with the NAO variance with a period of around 150 years. During the high NAO variance period, the NAO has significant correlation with mid-latitude East Asian precipitation; low NAO variance periods do not. The variation of the NAO-precipitation teleconnection may arise from the changing influence of NAO on the local temperature. The NAO signal moves eastward by a zonally oriented wave train, where it modulates the atmospheric circulation structure, and thus results in the nonstationary relationship between the NAO and mid-latitude East Asian precipitation.

show abstract

“…The westward expansion of the western North Pacific subtropical high (WNPSH) in the late 1970s, which is one of the components of the EASM, may have resulted in the interdecadal changes in typhoon tracks over the WNP (Ho et al, 2004). The boreal summer Pacific-Japan (PJ) teleconnection pattern related to the EASM variability, an anomalous meridional dipole circulation between the subtropics and mid-latitude over the WNP (Nitta, 1986;Chan and Zhou, 2005;Chan, 2005, 2007;Zhou et al, 2006Zhou et al, , 2007aYuan et al, 2008;Wang et al, 2009a,b;Gu et al, 2009;Zhou et al, 2009a,b), has a significant influence on TC activity over the WNP (Choi et al, 2010). The genesis locations and tracks of TCs over the WNP are obviously different during positive and negative PJ phases.…”

Section: Introductionmentioning

confidence: 98%

Effects of the East Asian summer monsoon on tropical cyclone genesis over the South China Sea on an interdecadal time scale

Wang

Zhou

et al. 2012

Adv. Atmos. Sci.

Self Cite

View full text Add to dashboard Cite

Tropical cyclone (TC) genesis over the South China Sea (SCS) during 1965-2004 was analyzed. The locations of TC genesis display evident seasonal changes, with the mean position of formation situated north of 15 • N in summer (June-July-August) and south of 15 • N in autumn (September-October-November). The TC genesis in summer underwent dramatic interdecadal variations, with more and less TC frequency during 1965-1974/1995-2004 and 1979-1993, respectively. In contrast, a significant interannual variation of TC genesis with a period of ∼4 years was observed in autumn.This study investigated the relationship of SCS TC genesis to the East Asian jet stream (EAJS) and the western North Pacific subtropical high (WNPSH) on an interdecadal time scale. Analysis and comparison of the impacts of the EAJS and the WNPSH on vertical wind shear changes indicate that changes in the WNPSH and EAJS intensity rather than EAJS meridional location are responsible for changes in TC genesis on an interdecadal time scale. Corresponding to a weaker EAJS, anomalous Rossby wave energy at upper levels displays equatorward propagation at midlatitudes and poleward propagation in the subtropics. This induces anomalous convergence and divergence of wave activity fluxes in East Asia around 30 • N and the SCS, respectively. The anomalous divergence of wave activity fluxes reduces easterlies at upper levels over the SCS, which is favorable to TC genesis.

show abstract

Interdecadal unstationary relationship between NAO and east China's summer precipitation patterns

Cited by 75 publications

References 13 publications

On the link between the subseasonal evolution of the North Atlantic Oscillation and East Asian climate

On the link between the subseasonal evolution of the North Atlantic Oscillation and East Asian climate

Nonstationary impact of the winter North Atlantic Oscillation and the response of mid-latitude Eurasian climate

Effects of the East Asian summer monsoon on tropical cyclone genesis over the South China Sea on an interdecadal time scale

Contact Info

Product

Resources

About