Variations of the East Asian Jet Stream and Asian–Pacific–American Winter Climate Anomalies

Yang, Song; Lau, K.-M.; Kim, K.-M.

doi:10.1175/1520-0442(2002)015<0306:voteaj>2.0.co;2

Cited by 493 publications

(417 citation statements)

References 85 publications

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“…During the cold winters (Figure 6(a)), the northeasterly monsoon flow is strong over East Asia and a well-defined cyclonic pattern appears over the North Pacific. These are the typical features that occur when the East Asian jet stream is strong (see Figure 8 of Yang et al (2002)). During the hot summers (Figure 6(b)), anomalous northerly winds blow from China to the SCS.…”

Section: Seasonal Variationsmentioning

confidence: 95%

“…Figure 3 shows the patterns of anomalous atmospheric circulation at 850 hPa for 30 August 1992 and February 1968, which correspond to the times when the extremes of daily maximum and monthly minimum temperatures appeared, as shown in Table I. (Note that, because of the potential problem in the NCEP-NCAR reanalysis for Asia during the early period (see Yang et al (2002)), only the data since 1968 are analysed in this study.) The large-scale features of the atmospheric circulation associated with the extremely high HK temperature on 30 August 1992 (Figure 3(a)) include the anomalously strong Asian summer monsoon flow over the tropical oceans like the Arabian Sea, the Bay of Bengal, and the SCS.…”

Section: Variations Of Maximum and Minimum Temperaturesmentioning

confidence: 99%

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Variations of the surface temperature in Hong Kong during the last century

Ding

Zheng

Yang

2002

Intl Journal of Climatology

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A statistical analysis has been applied to obtain a better understanding of the variations of the surface climate in Southeast Asia. In particular, we have depicted the detailed features of the changes in the surface air temperature of Hong Kong (HK) during the past 115 years. Analysis of the time-frequency spectra of the wavelet transform indicates that although seasonal variations account for most of the temperature variations, strong signals also exist on subseasonal, interannual, and interdecadal time scales. Though the strong seasonal cycle is marked by a minimum temperature in February (and then in January) and a maximum temperature in July (and then in August), strong variations on the subseasonal and interannual time scales occur mostly in February and then in March. It is also found that a rising tendency exists in the long-recorded temperature data, with a rate of 0.09-0.15°C per decade.Temperature variations in HK are strongly related to changes in the regional and remote atmospheric circulation on various time scales. The East Asian monsoon circulation is the main factor controlling the seasonal cycle and the subseasonal and interannual variations of the HK temperature during winter. The subseasonal and seasonal variations of the temperature are also associated with changes in the atmospheric circulation over the North Pacific, which is closely linked to the East Asian jet stream. Strong signals are also found in both this mid-latitude circulation and the El Niño-southern oscillation phenomenon when the interannual variability of the HK temperature is apparent.

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Section: Seasonal Variationsmentioning

confidence: 95%

Section: Variations Of Maximum and Minimum Temperaturesmentioning

confidence: 99%

Variations of the surface temperature in Hong Kong during the last century

Ding

Zheng

Yang

2002

Intl Journal of Climatology

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“…Yang et al (2002) found that the EAJS does not strongly link to the tropical central-eastern Pacific SST, but a strong EAJS is significantly associated with a decrease in the extratropical western North Pacific SST. Since, during warm PDO regimes, the western and central North Pacific Ocean typically exhibits low surface temperature anomalies, while the eastern tropical Pacific exhibits above-average temperatures (Zhang et al, 1997a), there is an indication that the increase in the EAJS and the enhancement and eastward extension of the Aleutian low observed for the period 1979-2000 are associated with a major regime shift in the Pacific climate, from a cold to warm PDO phase, which occurred after late 1970s.…”

Section: Jet Streamsmentioning

confidence: 99%

“…Previously, an EAJS strengthening (Figure 1(c)), which could be associated with the PDO warm phase, was noted in the latter period. Yang et al (2002) noted that a strong EAJS is clearly associated with an intensification of many atmospheric circulation systems, including the Asian continent high, east Asian trough, Aleutian low and the ridge over western North America, and related to a strong east-southeastward propagation of stationary wave activity. Thus an intensified EAJS is followed by an adjustment of the large-scale circulation systems that favour a stronger wave train pattern across Asia, the Pacific and North America.…”

Section: Stationary Wavenumbermentioning

confidence: 99%

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Multidecadal and interannual changes of stationary Rossby waves

Freitas

Rao

2011

Quart J Royal Meteoro Soc

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Changes in stationary Rossby waves (SRW) are connected to regional climate change and the propagation of these waves has a large influence on the evolution and development of the general circulation. Since the late 1970s and early 1980s many studies have noted a major shift in the structure of large-scale circulation occurring in both hemispheres. This paper explores the changes in the SRW pattern and their propagation associated with these climate shifts. First, multidecadal changes in SRW activity are examined, using NCEP-NCAR reanalysis data, for two periods:

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Teleconnections in the Earth System

Chase

Pielke

Avissar

2005

Encyclopedia of Hydrological Sciences

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This article illustrates the large‐scale connectivity of the atmosphere–ocean coupled system and generalizes the concept to regional scales and to other components of the earth system. Connections at a distance, or teleconnections, can occur by the direct transfer of mass by changes in regular circulations or by propagating waves initiated by a variety of mechanisms. Questions as to what extent recognized teleconnection patterns can be associated with identifiable forcing mechanisms, to what extent these patterns are interrelated and how they might cause, react to, or interact with changing forcing such as changes in atmospheric composition, land cover, or the distribution of sea ice to produce climate changes are examined.

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Variations of the East Asian Jet Stream and Asian–Pacific–American Winter Climate Anomalies

Cited by 493 publications

References 85 publications

Variations of the surface temperature in Hong Kong during the last century

Variations of the surface temperature in Hong Kong during the last century

Multidecadal and interannual changes of stationary Rossby waves

Teleconnections in the Earth System

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