Interannual Variation of the East Asian Cold Surge Activity

Chen, Tsing Chang; Huang, Wei; Yoon, Jonghyuk

doi:10.1175/1520-0442(2004)017<0401:ivotea>2.0.co;2

Cited by 86 publications

(59 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, SEACSs have obvious interannual and interdecadal variation characteristics [16,22,39,40]. For example, a weakening of the East Asian winter monsoon related to the global warming may have reduced the intensity and frequency of cold waves over East Asia in recent years [41,42].…”

Section: Discussionmentioning

confidence: 99%

Effects of Strong East Asian Cold Surges on Improving the Air Quality over Mainland China

2016

View full text Add to dashboard Cite

Abstract:A strong East Asian cold surge (SEACS) is one of the most distinct extreme weather events that can promote an improvement in local air quality. Combining East Asian atmospheric circulation with the air pollution index (API) datasets of 47 major cities throughout mainland China in 11 winter half-years (November-March) during 2001/2002-2011/2012, we investigated the influence of 39 SEACSs in conjunction with air pollution episodes on air quality over mainland China. The results showed that SEACS can cause considerable improvement in air quality and a remarkable decrease in the API over mainland China in up to 4 days after the SEACS outbreak day. The removal efficiency of air pollutants by SEACSs was greater than 30% in north central China, eastern southwest China, and southeast China. The occurrence date of the lowest value of the local API (indicating the best local air quality) can be observed as late day by day from northwest to southeast over mainland China after the SEACS outbreak, indicating a process of gradual improvement in Chinese air quality after the SEACS outbreak. When clean cold air originating from Siberia moves southward into coastal areas of southeastern China, the increase in sea level pressure, the drop in temperature and the enhancement in the northerly wind also tend to progress gradually from north to south over SEACS-affected East Asia. Thus, the "early in the north and late in the south" feature of air quality improvement by SEACSs over mainland China results from the southward movement of cold air masses from high to low latitudes after cold surge outbreaks.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of Strong East Asian Cold Surges on Improving the Air Quality over Mainland China

2016

View full text Add to dashboard Cite

show abstract

“…Further support for a relation between cold surges, circumglobal wave packets, and the NAO has been shown in previous studies. For example, Gong et al (2001) and Jeong and Ho (2005) found that East Asian cold surges overlap with the negative NAO phase, and Chen et al (2004) showed that these cold surges are associated with wave packets that closely resemble the CTP.…”

Section: Discussionmentioning

confidence: 99%

The Relationship between the North Atlantic Jet and Tropical Convection over the Indian and Western Pacific Oceans

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The strength of the winter East Asian monsoon is closely linked with cold-air outbreaks over East Asia, which are often accompanied by snow and severe socioeconomic impacts. East Asian cold surges are influenced by large-scale teleconnections through the AO (Jeong and Ho 2005;Park et al 2008Park et al , 2011, El Niño-Southern Oscillation (Chen et al 2004), and the Madden-Julian oscillation (Jeong et al 2005). The atmospheric circulation during the negative phase of the AO favors cold-surge development through intensification of the Siberian high and deepening of the East Asian coastal trough (Gong et al 2001;Jeong and Ho 2005).…”

Section: Recent East Asia Cold Surges Associated With Regional Sea Icmentioning

confidence: 99%

The Melting Arctic and Midlatitude Weather Patterns: Are They Connected?*

et al. 2015

View full text Add to dashboard Cite

The potential of recent Arctic changes to influence hemispheric weather is a complex and controversial topic with considerable uncertainty, as time series of potential linkages are short (,10 yr) and understanding involves the relative contribution of direct forcing by Arctic changes on a chaotic climatic system. A way forward is through further investigation of atmospheric dynamic mechanisms. During several exceptionally warm Arctic winters since 2007, sea ice loss in the Barents and Kara Seas initiated eastward-propagating wave trains of high and low pressure. Anomalous high pressure east of the Ural Mountains advected Arctic air over central and eastern Asia, resulting in persistent cold spells. Blocking near Greenland related to low-level temperature anomalies led to northerly flow into eastern North America, inducing persistent cold periods. Potential Arctic connections in Europe are less clear. Variability in the North Pacific can reinforce downstream Arctic changes, and Arctic amplification can accentuate the impact of Pacific variability. The authors emphasize multiple linkage mechanisms that are regional, episodic, and based on amplification of existing jet stream wave patterns, which are the result of a combination of internal variability, lower-tropospheric temperature anomalies, and midlatitude teleconnections. The quantitative impact of Arctic change on midlatitude weather may not be resolved within the foreseeable future, yet new studies of the changing Arctic and subarctic low-frequency dynamics, together with additional Arctic observations, can contribute to improved skill in extended-range forecasts, as planned by the WMO Polar Prediction Project (PPP).

show abstract

Interannual Variation of the East Asian Cold Surge Activity

Cited by 86 publications

References 24 publications

Effects of Strong East Asian Cold Surges on Improving the Air Quality over Mainland China

Effects of Strong East Asian Cold Surges on Improving the Air Quality over Mainland China

The Relationship between the North Atlantic Jet and Tropical Convection over the Indian and Western Pacific Oceans

The Melting Arctic and Midlatitude Weather Patterns: Are They Connected?*

Contact Info

Product

Resources

About