scholarly journals Regionally different precipitation trends over the Tibetan Plateau in the warming context: A perspective of the Tibetan Plateau vortices

2021 ◽  
Author(s):  
Lun Li ◽  
Renhe Zhang ◽  
Min Wen ◽  
Junmei Lv
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Tibetan Plateau Vortices ◽  
Precipitation Trends

Development and eastward movement mechanisms of the Tibetan Plateau vortices moving off the Tibetan Plateau

2018 ◽  
Vol 52 (7-8) ◽  
pp. 4849-4859 ◽  
Author(s):  
Lun Li ◽  
Renhe Zhang ◽  
Min Wen ◽  
Jianping Duan
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Tibetan Plateau Vortices

scholarly journals Temporal and spatial variability in precipitation trends in the Southeast Tibetan Plateau during 1961–2012

2015 ◽  
Vol 11 (1) ◽  
pp. 447-487 ◽  
Author(s):  
X.-L. Zhang ◽  
S.-J. Wang ◽  
J.-M. Zhang ◽  
G. Wang ◽  
X.-Y. Tang
Keyword(s):  
Tibetan Plateau ◽  
Confidence Level ◽  
Annual Precipitation ◽  
Monthly Precipitation ◽  
The Tibetan Plateau ◽  
Spring Precipitation ◽  
Local Climate ◽  
Temporal And Spatial ◽  
Southeast Tibetan Plateau ◽  
Precipitation Trends

Abstract. Using the monthly precipitation data at 14 stations from 1961 to 2012, the precipitation trends at the seasonal and annual scales are analyzed using the Mann–Kendall test in the Southeast Tibetan Plateau (STP). The area-averaged precipitation shows an increasing trend in the STP with strong temporal and spatial variations. The seasonal and annual precipitation increased, except in the summer; the annual precipitation increased by about one millimeter pre year over the last 52 years. The spring precipitation significantly increased at the 99% confidence level, while the mean summer precipitation insignificantly decreased at the 95% confidence level. The extreme precipitation, including the maxima and minima, also experienced overall increases. More than 78% of the stations exhibited increases in the annual precipitation (93% in spring). The precipitation variation with elevation was not obvious, but the variation with complex topography was obvious in the STP. The largest precipitation increases and decreases occurred in high-precipitation areas, while the increasing precipitation was dominant in or near the main area of the Tibetan Plateau (TP). The results of this study reveal the spatio-temporal variability in the precipitation trends in the STP for the first time. The results are beneficial for understanding the local climate characteristics in the STP and in the entire TP.

scholarly journals Climatology of Tibetan Plateau Vortices in Reanalysis Data and a High-Resolution Global Climate Model

2019 ◽  
Vol 32 (6) ◽  
pp. 1933-1950 ◽  
Author(s):  
Julia Curio ◽  
Reinhard Schiemann ◽  
Kevin I. Hodges ◽  
Andrew G. Turner
Keyword(s):  
High Resolution ◽  
Tibetan Plateau ◽  
Climate Model ◽  
Global Climate ◽  
Global Climate Model ◽  
Horizontal Resolution ◽  
Northwestern Part ◽  
The Tibetan Plateau ◽  
Wide Range ◽  
Tibetan Plateau Vortices

The Tibetan Plateau (TP) and surrounding high mountains constitute an important forcing of the atmospheric circulation due to their height and extent, and thereby impact weather and climate in downstream regions of East Asia. Mesoscale Tibetan Plateau vortices (TPVs) are one of the major precipitation-producing systems on the TP. A fraction of TPVs move off the TP to the east and can trigger extreme precipitation in parts of China, such as the Sichuan province and the Yangtze River valley, which can result in severe flooding. In this study, the climatology of TPV occurrence is examined in two reanalyses and, for the first time, in a high-resolution global climate model using an objective feature tracking algorithm. Most TPVs are generated in the northwestern part of the TP; the center of this main genesis region is small and stable throughout the year. The strength and position of the subtropical westerly jet is correlated to the distance TPVs can travel eastward and therefore could have an effect on whether or not a TPV is moving off the TP. TPV-associated precipitation can account for up to 40% of the total precipitation in parts of China in selected months, often due to individual TPVs. The results show that the global climate model is able to simulate TPVs at N512 (~25 km) horizontal resolution and in general agrees with the reanalyses. The fact that the global climate model can represent the TPV climatology opens a wide range of options for future model-based research on TPVs.

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