The characteristics of the four seasons in North China

It is characterized by high temperature and rain in summer and cold and dry in winter. Temperate monsoon climate; The temperature is below 0 degrees in winter, and it rains the most in summer.

In winter, influenced by the north wind from the high latitude inland, the polar continental air mass prevails here, which is cold and dry.

In summer, influenced by polar ocean air mass or denatured tropical ocean air mass, southeast wind and southeast wind prevail, with warm, hot and rainy seasons. The annual precipitation is about 1000mm, of which about two thirds is concentrated in summer (hot and rainy in summer and cold and dry in winter). It is distributed on the east coast of Eurasia at about 35 ~ 55 north latitude, including the area north of Qinling-Huaihe line in eastern China, Korean Peninsula, northern Japan and southern Russian Far East. It is located in the east temperate zone of Eurasia, specifically in North China, Northeast China of China, Northeast China of Honshu, Hokkaido Island, most parts of the Korean Peninsula and the Russian Far East. The origin lies between the largest continent and the largest ocean, and the thermal properties of land and ocean are significantly different. In summer, the Eurasian continental depression is connected, the ocean subtropical high extends westward and lifts northward, and the southeast monsoon from the subtropical high in the North Pacific brings abundant precipitation. The northwest monsoon from the powerful Mongolian high in winter affects the local area. Because the wind shear meets the requirements of monsoon, it is a monsoon climate. Features 1. Summer is hot and rainy: in summer, the sun's altitude angle increases, the days are long and the temperature is high, and the southeast monsoon blowing from the tropical ocean brings abundant precipitation.

2. Winter is cold and dry: the coldest monthly average temperature is below 0 degrees Celsius, and winter is cold. The reason is: the local latitude is high, close to the source of winter wind, the terrain is low and flat, and the winter wind is stronger.

The monsoon is extraordinary.

4. Summer and autumn are often affected by tropical cyclones. The natural belt is a temperate deciduous broad-leaved forest belt. Because the climate characteristics of the above temperate climate types are mainly humid (semi-humid in North China Plain and Northeast China Plain), temperate broad-leaved forest landscape (forest and grassland landscape in North China Plain and Northeast China Plain) is generally developed, but there are some differences. There are more kinds of broad-leaved trees in East Asia than in Europe, including Quercus mongolica, Quercus liaotungensis, Acer, Tilia lindleyana, Birch and other miscellaneous trees. In western Europe, pure forests composed of single tree species are often formed, such as beech forests and oak forests. The broad-leaved forest landscape in North America (including the southern Great Lakes, Appalachian Mountains, Mississippi River Basin and Atlantic coastal lowlands) is dominated by American beech and sugar maple. Colored brown soil and gray brown soil are mainly developed in the whole temperate moist broad-leaved forest belt, while cinnamon soil and black soil are mainly developed in semi-humid forest grassland belt. The main disastrous weather such as wheat, beet, peanut and cotton in the agricultural landscape in this area in winter and spring: cold wave (sandstorm, frost and white damage).

Summer: Strong convective weather (thunderstorm, gale, hail)