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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, Xia Yao, Xiuping Ma, Jiali Mima, Zhuoga |
| Copyright Year | 2016 |
| Abstract | Based on ERA-Interim data and precipitation data of 2474 stations in China during May–October from 1981 to 2013, transverse shear lines (TSLs) were identified, and their climatic characteristics and association with torrential rainfall events over the Tibetan Plateau and the region to its east during boreal summer were analyzed statistically, based on three criteria: the meridional shear of zonal wind, the relative vorticity, and the zero contour line of zonal wind. It was found that TSLs are generally west–east oriented over the Tibetan Plateau, with the highest occurrence frequency in June, and least occurrence in October. The high frequency axis of TSLs, parallel to the terrain of the Tibetan Plateau, shifts southward from May to August, and then slightly northward from September to October. The annual average TSL frequency is 65.3 days, and there are obvious interannual and interdecal variations of TSLs. The annual fluctuation of TSL frequency is most distinct in the 1980s, followed by the 2000s, with average frequency appearing during 1995–2000. It was found that the occurrence frequency of TSLs and that of heavy rainfall events over the Tibetan Plateau are stable during 1981–2013. However, the occurrence frequency of the heavy rainfall events resulting from TSLs is decreasing. More than 50% of the TSLs can lead to heavy rainfall, while 40% of the heavy rainfall events are caused by TSLs. TSLs are closely related to heavy rainfalls in the flooding season of June–August over the Tibetan Plateau. |
| Starting Page | 915 |
| Ending Page | 926 |
| Page Count | 12 |
| File Format | |
| ISSN | 20956037 |
| Journal | Journal of Meteorological Research |
| Volume Number | 30 |
| Issue Number | 6 |
| e-ISSN | 21980934 |
| Language | English |
| Publisher | The Chinese Meteorological Society |
| Publisher Date | 2017-01-17 |
| Publisher Place | Beijing |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Tibetan Plateau transverse shear line torrential rain climatic characteristics Atmospheric Sciences Meteorology Geophysics and Environmental Physics Atmospheric Protection/Air Quality Control/Air Pollution |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ocean Engineering Atmospheric Science |
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