On the impact of the Qinghai-Tibet Plateau uplift on climate, many scholars use mathematical models to infer the geological circulation of the atmosphere to show that the modern atmospheric circulation and the geological age of the differences in atmospheric circulation. The results of numerical simulation show that the Siberian high pressure does not exist in January before the uplift of the Qinghai-Tibet Plateau, and there is a weak high pressure in the vicinity of 30 ° N (temporarily called the Lhasa high pressure). The eastern part of the Qinghai- , While in the north it is dominated by the westward flow. The south southerly airstream dominates, and the lower layer of water vapor is easy to enter the west. In July, the low pressure in India did not exist. The eastern part of China was a hot low pressure. The temperature in the Tibetan area was much warmer than that of the tropical high pressure ridge over the troposphere in south China and Myanmar and India near 25 ° N.
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