The online map of average annual fog days in China from 1981 to 2010 comes from China Severe Weather and Climate Atlas (1961-2015). This atlas is compiled by the National Climate Center and published by the meteorological publishing house.
This atlas is compiled based on the statistics of national meteorological observation data, including 16 kinds of disastrous weather and climate graphic analysis products affecting China, including typhoon, rain and waterlogging, snow disaster, cold wave, gale, sandstorm, low temperature and cold damage, high temperature, drought, lightning, hail, frost, freezing, fog, haze and acid rain, such as the spatial distribution map of annual and seasonal occurrence frequency, the spatial distribution map of certain characteristic values, the national and regional frequency of the changes over the years (1961-2015), the national and regional frequency of the monthly changes, etc., a total of more than 300 Width.
In addition, the disaster information change maps of major meteorological disasters such as typhoon, rain and waterlogging, low-temperature freezing damage and snow disaster, drought, lightning and hail are compiled, and individual cases of major historical disaster events such as typhoon, rain and waterlogging, sandstorm, low-temperature freezing damage and snow disaster, high temperature and drought are selected. In order to facilitate readers' reading and comprehension, this atlas not only provides a large number of intuitive graphics, but also provides text descriptions of the main features.
This atlas is a reference book for understanding China's disastrous weather and climate. It can be used by business, scientific research, teaching and other personnel in the fields of meteorology, agriculture, water conservancy, geography, education, environment, land and resources, as well as by relevant departments such as disaster prevention and reduction, construction planning and so on.
Fog is a weather phenomenon that consists of countless small water droplets or ice crystals suspended at low altitude and makes the horizontal visibility less than 1km. Fog reduces visibility, easily leads to water, land and air traffic accidents, and also affects people's daily life and health.
The distribution of annual fog days in China is generally more in the East and less in the West. The annual fog days are generally more than 20 days in most parts of North China Plain, the east of Jianghuai River, the middle of Jianghan River, most parts of Jiangnan River, most parts of Yunnan Guizhou Plateau, Sichuan Basin, most parts of Fujian and Hainan, and up to 50 ~ 70 days in some areas; There are also many fog days in the southeast of Northeast China and the north of Daxinganling, with 20-50 days; Due to the dry climate in Northwest China, fog rarely occurs, but there are many fog days in some areas. For example, the annual fog days in Northern Xinjiang and some areas of Shaanxi are generally 10 ~ 30 days.
Online map of average spring fog days in China from 1981 to 2010
Online map of average summer fog days in China from 1981 to 2010
Online map of average autumn fog days in China from 1981 to 2010
Online map of average winter fog days in China from 1981 to 2010
Online map of the maximum annual fog days in China from 1961 to 2015
Online map of linear change trend of annual fog days in China from 1961 to 2015
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