The Influence of the Tibetan Plateau Monsoon on Summer Precipitation in Central Asia

Zhang, Shaobo; Meng, Lixia; Zhao, Yong; Yang, Xiangdong; Huang, Anning

doi:10.3389/feart.2022.771104

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…The east-west oscillation of its central position have different effects on circulation and water vapor transport, thus causing certain differences in precipitation in Xinjiang. The effects on heavy rainfall in SXJ are particularly prominent when the distribution is bimodal [11,12]. In summer, the West Asian subtropical westerly rapids are located over Xinjiang, and its north-south position, intensity, and axis direction influences precipitation [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Extreme Summer Precipitation Characteristics and Associated Water Vapor Transport in Southern Xinjiang

Jin

Huang

2023

Water

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In this study, we analyzed the spatial and temporal characteristics of extreme precipitation in summer in southern Xinjiang (SXJ) using CN05.1 daily precipitation data, the National Centers for Environmental Prediction (NCEP) monthly average data, and ERA5 four-times-daily reanalysis data from 1961 to 2020, determined the interdecadal variation in extreme precipitation, and further explored the circulation mechanisms and anomalous water vapor transport characteristics associated with changes in extreme precipitation. The results showed that extreme precipitation, extreme precipitation days, and extreme precipitation contribution in SXJ all increased significantly, with the turnaround occurring in 1986. Enhanced vertical upward motion, greater convergence of water vapor at lower levels, and a more unstable atmospheric convection led to an increase in extreme precipitation along the southern border region. The eastward Pacific Ocean and southward Indian Ocean provided anomalous water vapor transport, and the boundary water vapor flux trend and its correlated distribution with extreme precipitation showed that southern boundary water vapor transport played an important role in the increase in extreme precipitation. At vertical heights, the dominant longitudinal water vapor transport fluxes were concentrated in the middle and upper layers, whereas the latitudinal water vapor transport fluxes were concentrated in the middle and lower layers.

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Section: Introductionmentioning

confidence: 99%

Extreme Summer Precipitation Characteristics and Associated Water Vapor Transport in Southern Xinjiang

Jin

Huang

2023

Water

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“…The quasi-biweekly oscillation is a seasonal characteristic of the SAH [51], leading to changes in the atmosphere's thermal structure and circulation field [52,53]. Previous studies have primarily focused on its interactions with the summer monsoon and precipitation patterns [54][55][56][57][58][59]. However, how this powerful circulation system will affect dust activity has not been clearly concluded.…”

Section: Introductionmentioning

confidence: 99%

Summer Extreme Dust Activity in the Taklimakan Desert Regulated by the South Asian High

Wang

Han

et al. 2023

Remote Sensing

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Summer dust aerosol in the Taklimakan Desert (TD) affects not only the albedo of the snow and ice sheets on the Tibetan Plateau (TP) but also air quality and precipitation in the downstream areas. In this study, the summer extreme dust activity in the TD was jointly investigated by using satellite observations and MERRA-2 reanalysis datasets and divided into two states: dust active period and dust inactive period. The horizontal and vertical distribution of summer dust during both the dust active and inactive periods, as derived from the MERRA-2 dataset, is consistent with satellite observations. By comparing the upper-level circulation and surface meteorological elements at two periods, we identify the South Asian High (SAH) as the dominant factor driving the extreme dust activity in the TD during summer. When the SAH is centered on the Iranian Plateau (IP), the dust aerosol in the TD exhibits increased activity and is lifted to higher altitudes due to significantly enhanced westerly winds, near-surface wind speed, and an ascending motion. Conversely, when the SAH is centered on the TP, the summer dust activity shows the opposite behavior. These new findings on the regulatory mechanism of the SAH on the summer dust activity in the TD are highly significant for understanding the occurrence and transport of summer Asian dust and its potential impact on heavy precipitation in the downstream areas.

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Modulation of Preceding Tibetan Plateau Tropospheric Thermal Anomaly on Summer Temperature Anomalies in the Yangtze and Huaihe River Valleys

Li,

Zhang,

Liu

et al. 2024

Intl Journal of Climatology

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Anomalous warm surface air temperatures (SATs) appeared in eastern China, especially the middle and lower Yangtze and Huaihe River valleys (MLYHRV), in the summer of 2022. Using the 2022 SAT anomaly as a case, this study analyses the reasons for the variation of summer SATs in the MLYHRV and explores the precursory signals for the summer MLYHRV SAT and related mechanisms. The findings indicate that the preceding May mid‐upper (500–300 hPa) tropospheric temperature (TT) over the Arabian Sea and India and the western Tibetan Plateau (TP) can reflect the persistence of the TT anomaly over the western TP and its eastward extension to the Japan Sea from May to summer, which causes downstream East Asian circulation (i.e., the South Asian high and western Pacific subtropical high) and related SAT anomalies over the MLYHRV during summer (especially July–August). In addition, the May La Niña SST can reflect the summer La Niña SST pattern and therefore affect the summer MLYHRV SAT by modulating the East Asian circulations. Using TT and SST precursory signals, a statistical prediction model was developed to predict the summer MLYHRV SAT. This model based on the TT and SST signals shows better prediction ability than the model based only on the traditional La Niña SST signal. The May ASI‐WTP TT may be regarded as a crucial supplementary precursor for forecasting the summer MLYHRV SAT.

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The Influence of the Tibetan Plateau Monsoon on Summer Precipitation in Central Asia

Cited by 5 publications

References 27 publications

Extreme Summer Precipitation Characteristics and Associated Water Vapor Transport in Southern Xinjiang

Extreme Summer Precipitation Characteristics and Associated Water Vapor Transport in Southern Xinjiang

Summer Extreme Dust Activity in the Taklimakan Desert Regulated by the South Asian High

Modulation of Preceding Tibetan Plateau Tropospheric Thermal Anomaly on Summer Temperature Anomalies in the Yangtze and Huaihe River Valleys

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