The online map of average annual rime 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.
Freezing refers to rime, rime and freezing phenomenon formed by snow (or sleet, graupel, ice particles, freezing rain, etc.) or low temperature after rainfall. Among them, rime is a milky white ice crystal directly condensed by water vapor in the air or directly frozen by supercooled fog droplets on the object. It is often hairy needle or uneven granular on the surface. It is mostly attached to slender objects or the windward surface of objects. Sometimes the structure is brittle and easy to collapse under earthquake. Rime is a hard ice layer formed by supercooled liquid precipitation directly freezing after touching ground objects. It is transparent or ground glass, and its appearance is smooth or slightly convex. Icing refers to the phenomenon that the open water surface freezes into ice.
China's rime is mainly distributed in the north, and the number of annual rime days in the north central part of Northeast China, Northeast Inner Mongolia and Northern Xinjiang is relatively large, more than 5 days, including 15-30 days in some areas in Northern Xinjiang and Eastern Inner Mongolia; It takes 1 to 5 days in most of the Northeast, North China Plain and other places.
Online map of the maximum number of rime days in China from 1961 to 2015
Online map of average annual glaze days in China from 1981 to 2010
Online map of annual freezing days in China from 1981 to 2010
Online map of the maximum number of glaze days in China from 1961 to 2015
Online map of the maximum annual freezing days in China from 1961 to 2015
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