Why is it that the West Lake is not frozen, which is the standard to measure cold?

The reason why the West Lake freezes is because of its geographical location and climate. If it does freeze, it means it's really cold.

Speaking of the freezing of the West Lake, I seldom see it. Every time it freezes, it is rated as the coldest day. The thicker the ice, the colder the weather. According to the natural geographical environment, it can be seen that the West Lake has good natural conditions and a long history, and it will not freeze easily. So people's experience is to judge whether the weather is cold or warm according to whether the West Lake is frozen.

First, natural conditions West Lake is located in Hangzhou, which has always been a city with relatively warm weather, located in the subtropical monsoon region, with obvious seasonal changes throughout the year, abundant annual precipitation and relatively cold and dry winter. Therefore, because of its geographical location, the weather in West Lake is warmer in winter, and there are only a handful of times of freezing over the years. As a landmark building in Hangzhou, people like to play by the West Lake and enjoy the beautiful scenery. At ordinary times, the West Lake will not freeze, and it can only be seen in extremely cold weather, and what freezes is usually only a thin layer of ice. If you encounter a thick layer of ice, it means that the weather is cold enough. According to people's common sense of life, as long as there is ice in recent years, the weather is relatively cold. Moreover, when the ice on the West Lake is thick, the weather is coldest, reminding people to take warm measures.

Second, it has a long history. According to historical records, the freezing year of West Lake 195 1 was rated as the second coldest year in China history. It is still frozen in February, and it is as cold as -9.6℃. Many people still remember this. And the year 2008 that we are familiar with. That year, the West Lake was so frozen that it was thick that it could even carry people. China also suffered the worst cold weather in more than 50 years. Many provinces and cities have encountered snow and ice weather. Most traffic conditions are affected and traffic is blocked. Therefore, people can often judge the weather by watching the West Lake freeze. If the weather is too cold, the West Lake will freeze. In particular, when local people see ice, they will judge that the weather is very cold according to their own inherent impressions.

The lake does not freeze easily. Although it is often said that the temperature will freeze when it reaches below zero, it is not easy for the water temperature to reach below zero under normal circumstances. In order to freeze, there are some external conditions besides some internal conditions, such as wind speed, temperature and humidity, low temperature duration and so on. These conditions must be combined at the same time before they can be frozen. So the West Lake is frozen, and the weather is much colder than we thought, so it has become the standard for people to measure whether it is cold or not.