Mechanisms for the formation of Northeast China cold vortex and its activities and impacts: An overview

Liu, Yi; Shen, Baizhu; Li, Shangfeng; Liu, Gang; Yang, Xu

doi:10.1007/s13351-016-6003-4

Cited by 37 publications

(23 citation statements)

References 33 publications

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“…Note that the pattern with "positive-north and negativesouth" that is asymmetric about equator is quite different from the ENSO-SSTA pattern. In the previous studies, it is found that the ENSO has a good relation with the cold vortex in Northeast China [38], suggesting that during period of some cold vortexes, there occur some strong rainfall events. However, the SSTA pattern in Figure 7 does not look like the ENSO pattern, suggesting that the regionally mean daily precipitation extremes in northeast China may not closely relate to the ENSO.…”

Section: Wave Activities and Sst Anomalies Conducive To Extreme Precimentioning

confidence: 90%

Anomalous Circulation Patterns in Association with Summertime Regional Daily Precipitation Extremes over Northeast China

Chuanlei

Guan

Jiao

et al. 2019

Advances in Meteorology

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Based on the NCEP/NCAR daily reanalysis product, NOAA monthly sea surface temperature (SST) dataset, and daily precipitation data collected at observational stations provided by Meteorological Information Center of China Meteorological Administration, the present study analyzes characteristic circulation anomalies conducive to regional extreme daily precipitation in the summer over Northeast China. Results indicate that 26 extreme precipitation events occurred during the 36-year period of 1979–2014. The precipitation threshold for the 99th percentile is 22.2 mm/d, and the maximum extreme daily precipitation occurred in Liaoning Province. When extreme precipitation occurs, Northeast China is located to the southeast of an anomalous cyclonic circulation and northwest of an anomalous anticyclonic circulation, where a strong convergence zone is formed in the lower troposphere. The low-level convergence and upper-level divergence as well as the baroclinic circulation structure are favorable for the development of extreme daily precipitation. Meanwhile, there exist two symmetrical meridional circulations to the north and south of Northeast China. The two meridional circulations share the same ascending branch, which is conducive to the occurrence of precipitation. Located in the strong convergence zone to the southeast of the abnormal cyclonic circulation and northwest of the abnormal anticyclonic circulation, huge amounts of water vapor from the Inner Mongolia, Russia, the Japan Sea, and the mid-high latitudes of the Northwest Pacific are transported to Northeast China, providing sufficient water vapor condition for the occurrence of extreme daily precipitation in this region. In addition, daily extreme precipitation in Northeast China is also closely related to the accumulation and convergence of disturbance energy in Northeast China. It may also be related to the abnormal SST distribution that is high in the north and low in the south. Corresponding to extreme daily precipitation, SST anomaly in the Pacific Ocean is roughly characterized by the feature of “positive-north and negative- south” with the equator as the boundary.

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Section: Wave Activities and Sst Anomalies Conducive To Extreme Precimentioning

confidence: 90%

Anomalous Circulation Patterns in Association with Summertime Regional Daily Precipitation Extremes over Northeast China

Chuanlei

Guan

Jiao

et al. 2019

Advances in Meteorology

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“…The northeast cold vortex is one of the main weather systems affecting Northeast China (Wang et al, 2007;Xie and Bueh, 2014;Lian et al, 2016). The activity of the northeast cold vortex is an important reason for the occurrence of strong convective weather processes such as thunderstorms, gales and rainstorms in Northeast China (Chen et al, 2018).…”

Section: Data Of Covariatesmentioning

confidence: 99%

Contribution of the Northeast Cold Vortex Index and Multiscale Synergistic Indices to Extreme Precipitation Over Northeast China

Meng

Liu

et al. 2021

Earth and Space Science

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With global warming, the increasing number and intensity of extreme precipitation events are a global trend. The IPCC AR5 (2012) points out that the global average temperature has increased by 0.12°C every 10 years in the past 60 years (1951-2012). The temperature in Northeast China has increased by 1.75-2.5°C and is one of the most sensitive regions to climate change in the world (IPCC, 2012; Qin and Stocker, 2014). Northeast China is the most important area for food production in China and is also an important base for national security. Therefore, it is particularly important to study the mechanism of the formation of extreme precipitation in Northeast China. Extreme value theory (EVT) can successfully characterize climatic and hydrological extremes and has been widely used in meteorology and hydrology (

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“…This indicates stronger tropical convection over the western North Pacific. The other anomaly was the weaker Mongolian cyclone (also termed the Northeast China cold vortex (Lian et al, ; Xie & Bueh, )), characterized by quasi‐barotropic anticyclonic anomalies over Northeast Asia (Figure a, c, and e). The weaker Mongolian cyclone and WPSH jointly induced the upper‐level cyclonic and lower‐tropospheric anticyclonic anomalies over the SCS and southeast Asia (Figures a and e).…”

Section: Extremely Late Onset Of the Scssm In 2018mentioning

confidence: 99%

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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Mechanisms for the formation of Northeast China cold vortex and its activities and impacts: An overview

Cited by 37 publications

References 33 publications

Anomalous Circulation Patterns in Association with Summertime Regional Daily Precipitation Extremes over Northeast China

Anomalous Circulation Patterns in Association with Summertime Regional Daily Precipitation Extremes over Northeast China

Contribution of the Northeast Cold Vortex Index and Multiscale Synergistic Indices to Extreme Precipitation Over Northeast China

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

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