Enhanced moisture transport associated with the interdecadal change in winter precipitation over Northwest China

Yin, Xiaoxue; Zhou, Lian-Tong

doi:10.1002/joc.7249

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…Many previous studies have revealed that North Atlantic SST anomalies can trigger continental‐scale wave trains to affect the climate over downstream regions (e.g., Chen et al, 2022; Watanabe, 2004; Wu et al, 2011). Some recent works have found that the interdecadal transition in the phase of the North Atlantic‐related Eurasia (EU) pattern during the late 1980s plays a primary role in the interdecadal changes of moisture transportation, which in turn, contribute to the increased precipitation over northwest China after the late 1980s (Yin & Zhou, 2022; Zhou & Wu, 2015). The contemporaneous anomalous SSTs over the North Atlantic associated with the PIhf were examined for both P1 and P2 (Figure 6a,b).…”

Section: The Sptb Variations Related Ocean–atmosphere Anomaliesmentioning

confidence: 99%

Interdecadal changes in the interannual variations in spring precipitation over the Tarim Basin

Xie,

Jia,

Chen

et al. 2023

Intl Journal of Climatology

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The year‐to‐year fluctuation and total amount of spring precipitation over the Tarim Basin (TB) (SPTB) have both significantly increased after 1985. The data are then divided into two subperiods, that is, 1961–1985 (P1) and 1986–2020 (P2), and the contributions from various climate factors, including the North Atlantic and Indian Ocean sea surface temperatures (SSTs), as well as from Tibetan Plateau (TP) snow, to the interdecadal changes from P1 to P2 are examined. In P1, the SPTB‐related atmospheric circulation anomalies display a zonal wave‐like pattern dominating the middle–high North Atlantic‐Eurasian continent. In contrast, in P2, the SPTB‐related atmospheric circulation anomalies feature a meridional tripole pattern prevailing over the North Atlantic and western Europe. The observational analysis indicates that abnormally low pressure in the north and high pressure in the southwest of the TB are the key atmospheric systems that influence moisture transportation to the Tarim Basin and consequently impact the variability of the SPTB. The anomalous SSTs in the North Atlantic and Indian Ocean play a significant role in inducing changes in the SPTB by regulating the moisture transport pathway in the vicinity of the TB. In P1, the SSTs in both the North Atlantic and the tropical Indian Ocean contribute to the SPTB mainly in the periphery of the TB, while in P2, they contribute to the SPTB in most of the TB. In addition, the snow cover over TP also contributes to the SPTB changes. Distinguished from the effects of oceanic SST, the TP snow primarily influences the variability of the SPTB within the central region of the TP during P1 and around the periphery of the TP during P2.

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Section: The Sptb Variations Related Ocean–atmosphere Anomaliesmentioning

confidence: 99%

Interdecadal changes in the interannual variations in spring precipitation over the Tarim Basin

Xie,

Jia,

Chen

et al. 2023

Intl Journal of Climatology

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Improved combined system and application to precipitation forecasting model

Zhang

Kou

et al. 2022

Alexandria Engineering Journal

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Interannual Variability of Extreme Precipitation during the Boreal Summer over Northwest China

Lei

Chen

et al. 2023

Remote Sensing

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Herein, we investigated the characteristics and mechanisms of interannual variability of extreme summer precipitation in northwest China (NWC). The four high-resolution precipitation predicting products under assessment indicated that both the accumulation of summer daily precipitation ≥95th percentile, and the summer maxima of daily precipitation generally decreased in a southeast—northwest direction, while relatively high values were observed in the Tienshan and Qilian Mountain areas. In turn, the Tropical Rainfall Measuring Mission (TRMM) satellite dataset underestimated extreme precipitation in mountainous areas, while Asian precipitation highly—resolved observational data integration towards evaluation (APHRODITE) and Climate Prediction Center (CPC) captured the characteristics of extreme precipitation in NWC. AMIP-type simulations of the interannual variability of extreme summer precipitation in NWC were quite unsuccessful. However, all of them can capture the increasing trends. Therefore, we further found that the interannual increase in extreme precipitation in NWC is strongly correlated with the weakened South Asian high, strengthened Western Pacific Subtropical high, the enhanced westerly jet, and the mid- to high-latitude Rossby wave trains, whose formation and sustenance can be traced back to sea surface temperature-anomalies in the western Pacific in May, June, and July. An increased sea surface temperature promotes convection and induces diabatic heating, which stimulates anticyclonic anomalies that disturb the enhanced westerly jet, resulting in a barotropic Rossby wave train via the Gill-type response. Additionally, it guides more water vapor convergence to NWC and enhances upward motion via anticyclonic anomalies over western Europe and Eastern Asia, and cyclonic anomalies over Central Asia.

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Enhanced moisture transport associated with the interdecadal change in winter precipitation over Northwest China

Cited by 3 publications

References 51 publications

Interdecadal changes in the interannual variations in spring precipitation over the Tarim Basin

Interdecadal changes in the interannual variations in spring precipitation over the Tarim Basin

Improved combined system and application to precipitation forecasting model

Interannual Variability of Extreme Precipitation during the Boreal Summer over Northwest China

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