Impacts of antarctic oscillation on summer moisture transport and precipitation in eastern China

Qin, Jun; Pan-xing, Wang; Gong, Yan

doi:10.1007/s11769-003-0064-x

Cited by 12 publications

(6 citation statements)

References 6 publications

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Section: Discussionmentioning

confidence: 99%

“…Furthermore, some studies investigate the associated atmospheric circulation influence factors on China precipitations, such as the interseasonal oscillation over the tropical western Pacific and the South China Sea, Antarctic Oscillation, Northwestern Pacific High, the SST, etc. (Li & Li, 1997; Nan & Li, 2005; Qin et al, 2005; Wang, 1994; J. J. Xu & Johnny Chan, 2002). Therefore, which element is the most critical impacting factor for the increase of DSs and how to estimate and confirm the influence degrees of human activities is a crucial question related to the local developing policies?…”

Section: Discussionmentioning

confidence: 99%

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Relationship between the East Atlantic teleconnection pattern and the spring dust storm in northern China. Part‐I: Impacts of components of the atmospheric circulation over Eurasia on dust storm dynamic power—Spring gales

Gao

Yong

et al. 2022

Meteorological Applications

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Spring gale is a dynamic power for DSs (DSs), which presents a close connection with the DSs of northern China. Both display declining trends during the past 68 years . In this study, the influencing factors of spring gales and DSs around northern China and possible adjustment functions of the East Atlantic (EA) teleconnection pattern have been investigated. It was found that the major systems controlling spring gales include the North Polar vortex (NPV), mid-high-latitude blocking highs (BHs), air pressure status of the Tibetan Plateau (TP) over the Eurasian continent, India-Burma trough (IBT) and western Pacific subtropical high (WPSH). Under synthetic atmospheric circulation conditions of an enlarged NPV, lower air pressure over the TP, a strong IBT, and a southeastward-retreated WPSH, spring gales increase, and the frequency of DS occurrence is increased, and vice versa. Additionally, spring gales are also negatively affected by BHs. The most important is the Baikal BH, which has influence not only in previous seasons but also in the contemporary spring. Furthermore, the NPV and IBT have close negative correlation with the EA pattern, whereas the TP and WPSH have positive correlation with the EA pattern both in previous seasons and in the contemporary spring. A high-pitched EA pattern results in a strong western current north of Lake Baikal, which may prohibit the expansion of the NPV in the sector of northern China. A shrunk NPV means infrequent cold air attacks and decreased gales and DSs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Relationship between the East Atlantic teleconnection pattern and the spring dust storm in northern China. Part‐I: Impacts of components of the atmospheric circulation over Eurasia on dust storm dynamic power—Spring gales

Gao

Yong

et al. 2022

Meteorological Applications

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“…The APO index showed a decadal variation, tending to a high-index polarity before 1975 and afterward to a low-index polarity. Qin et al (2005) analysed of moisture transport characteristics and corresponding precipitation variation in the east China in summer by using NCEP/NCAR reanalysis data and monthly precipitation in China, and found that the abnormal variation of the Antarctic Oscillation affected the summer precipitation in China significantly. The variation of Antarctic Oscillation can cause the variation of intension and location of Northwestern Pacific High, which in turn cause the variation of summer monsoon rainfall in the eastern China.…”

Section: Large-scale Circulationmentioning

confidence: 99%

Moisture budget variations in the Yangtze River Basin, China, and possible associations with large-scale circulation

Zhang

Tao

Qiang

et al. 2009

Stoch Environ Res Risk Assess

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We analyzed seasonal and annual variations of the whole layer atmospheric moisture budget and precipitation during 1961-2005 and their associations with largescale circulation in the Yangtze River basin, China. The results indicated increasing moisture budget in summer and winter, but decreasing moisture budget in spring and autumn. Positive correlations between moisture budget and precipitation illustrate tremendous impacts the moisture budget has on the precipitation changes across the Yangtze River basin. In terms of seasonal variations, significant correlations were observed between precipitation and moisture budget in spring and autumn in the upper Yangtze River basin. Besides, we also analyzed changes of geopotential height. The positive trends of the geopotential height (850 hPa) were observed in the East Asia and the negative trends in the middle and west Pacific Ocean, indicating increasing geopotential height from south to north in east Asia which largely limited the moisture propagation to north China. While decreasing meridional geopotential height from west to east along the Yangtze River basin caused more moisture propagation from the west to the east parts of the study region, which may benefit more precipitation in the middle and lower Yangtze River basin.

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“…Extensive studies regarding precipitation in China have focused on annual and seasonal scales for different regions. The factors that influence the relative atmospheric circulation, such as the interseasonal oscillation over the tropical western Pacific/South China Sea, the Arctic Oscillation, the Northwestern Pacific High, the sea surface temperature (SST) and the sea level pressure (SLP) have been analysed by using statistical methods, model simulation, rotated principal component and wavelet transforms (Wang, ; Li and Li, ; Xu and Chan, ; Qin et al , ; Song et al , ). For the whole region of IM, the annual amount of precipitation did not exhibit an evident trend within the period 1961–2000, but sharply decreased during 2001–2007.…”

Section: Introductionmentioning

confidence: 99%

Typical synoptic types of spring effective precipitation in Inner Mongolia, China

Gao

Yan

et al. 2012

Met. Apps

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Spring (March to May) is a crucial season for crop seeding and grass growth in Inner Mongolia (IM), China. Yearly harvests of agriculture, and animal husbandry, are controlled partially by spring precipitation. Based on the observations at 104 stations in IM, the spring precipitation during 1961-2010 was investigated and analysed. The results show that the amount of spring precipitation displays a trend associated with an increasing frequency of effective spring precipitation events (ESPE, with more than 10 stations among all observatories with over 10 mm daily precipitation). In addition, the synoptic conditions of the 141 ESPEs were studied through analysis of the sea level pressure (SLP), and 850, 700 and 500 hPa charts. They were classified into five types and named for the source positions of the frontal cyclones over the Eurasian continent on the SLP chart. Most of the Hetao, Mongolian and Huanghe cyclones in spring time, in general, bring strong wind, decreasing temperature or dust storms to IM. Sometimes they may also cause effective precipitation when the moisture transportation is favourable along the cyclone paths. The Northeast China cyclone mainly influences Northeast China and can lead to rainfall with adequate moisture supplies. In most cases, cold air from Siberia forms a frontal cyclone or a trough around Lake Baikal, and then heads eastward or southeastward, producing precipitation over large areas in IM in spring. Typical features of the synoptic evolutions of those five types are summarized and presented through analysis of representative ESPEs.

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Impacts of antarctic oscillation on summer moisture transport and precipitation in eastern China

Cited by 12 publications

References 6 publications

Relationship between the East Atlantic teleconnection pattern and the spring dust storm in northern China. Part‐I: Impacts of components of the atmospheric circulation over Eurasia on dust storm dynamic power—Spring gales

Relationship between the East Atlantic teleconnection pattern and the spring dust storm in northern China. Part‐I: Impacts of components of the atmospheric circulation over Eurasia on dust storm dynamic power—Spring gales

Moisture budget variations in the Yangtze River Basin, China, and possible associations with large-scale circulation

Typical synoptic types of spring effective precipitation in Inner Mongolia, China

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