The cold high is formed in the cold high pressure in the middle and high latitudes covered with ice and snow. The cold season in the Northern Hemisphere is mostly formed in Siberia and Canada The warm season is mostly formed in Arctic 。 1. The frequency of cold high pressure in cold wave has obvious changes year, month and season. [1]
2. The cold wave cold high mainly appears in the middle of the Asian continent, with two centers, the main center at 50~55 ° N and 95~100 ° E. The center position does not change seasonally, but the value changes. The sub center is in the south of Omsk, Russia, with a small range and value. [1]
3. The frequency of cold high-pressure central air pressure value is in normal distribution. The location of the strong high pressure is consistent with the main center of the high pressure, while the weak high pressure is distributed in eastern China and coastal areas, as well as in Europe. [1]
4. There are two cold high-pressure generating regions, one is in the Taimer Peninsula, and the other is in the east of Europe to Xindi Island. [1]
5. The moving path of cold high pressure is mainly from west to east, supplemented by three paths from the north, and another path from the northeast in winter. From the distribution center of the high pressure to the east and southeast, there is a path for the high pressure to move during the outbreak. [1]
