The online map of average annual haze 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.
Haze is a phenomenon that a large number of very fine dry dust particles float evenly in the air, making the air with horizontal visibility less than 10km generally turbid. The weather condition when haze occurs is that the air mass is stable and dry. Haze not only affects people's physical health, but also affects their mental health. Under haze weather conditions, the atmospheric conductivity decreases, and the lightning impulse withstand voltage capacity of the power system decreases, which is easy to cause pollution flashover accidents of the power supply system. Haze is mainly distributed in central and eastern China. The annual haze days in Western China, most of Northeast China, Inner Mongolia, Hainan and Taiwan are less than one day; The rest of the country generally lasts for more than 1 day, including 10-40 days in most of North China, Western Jianghan, most of Jiangnan, Central South China and some parts of Guangxi, Middle East of Shaanxi, central and northwest of Henan and southwest of Yunnan, and more than 40 days in some parts of Pearl River Delta, Yangtze River Delta and western North China.
Online map of average spring haze days in China from 1981 to 2010
Online map of average summer haze days in China from 1981 to 2010
Online map of average autumn haze days in China from 1981 to 2010
Online map of average winter haze days in China from 1981 to 2010
Online map of the maximum annual haze days in China from 1961 to 2015
Online map of linear change trend of annual haze days in China from 1961 to 2015
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