What's the difference between Zhejiang climate and Guangzhou climate?

Zhejiang-North Subtropical Zone (15%), Middle Subtropical Zone (80%), South Subtropical Zone (5%), Guangdong-Middle Subtropical Zone (50%), South Subtropical Zone (42%) and Tropical Zone (8%) are characterized by obvious monsoon, distinct four seasons, moderate annual temperature and abundant sunshine. The annual average temperature in Zhejiang is 15 ~ 18℃, the extreme maximum temperature is 33 ~ 43℃, and the extreme minimum temperature is -2.2 ~- 17.4℃. The average annual rainfall in the province is 980 ~ 2000mm, and the average annual sunshine hours are1710 ~ 2100h.

Guangzhou is located in the south subtropical zone and has a typical maritime climate of the south subtropical monsoon. Because the back of the mountain faces the sea, the maritime climate is particularly remarkable, with warm and rainy, sufficient light and heat, small temperature difference, long summer and short frost period. Because of the same period of water and heat, it is very beneficial to the growth of crops, but the threat of natural disasters is also great. Disastrous weather such as typhoon, rainstorm, cold wave, thunder and lightning, smog and so on often bring adverse effects to industrial and agricultural production, transportation and so on. Sufficient light and heat resources. In 2006, the annual sunshine hours in Guangzhou were1217.8 ~1826.4 hours, the annual average temperature was 22.2 ~ 23.2℃, the annual extreme maximum temperature was 37.4 ~ 38.2℃, and the annual extreme minimum temperature was 2.6 ~ 5.655℃. In summer, all districts (county-level cities) have high temperature and hot weather, and in winter, Conghua City has basically no cold damage except frost and freezing. This year is the warmest year in Guangzhou since the founding of the People's Republic of China, and global warming has a direct impact on Guangzhou. There is abundant rainfall. In 2006, the total precipitation in Guangzhou was between 65438 0.963.0 and 2665438 0.3 mm, both higher than the average in previous years. The annual total rainfall in Laoba, Panyu, Huadu, Zengcheng and Conghua is 437.65438 0 mm, 528.0 mm and 65,438 0.87 mm respectively. The annual total rainfall of Zengcheng is 26 13.9mm, ranking first in the city and 34.9% higher than the average over the years. This is the second rainy year since Zengcheng had meteorological records. In that year, the temporal and spatial distribution of precipitation in the city was extremely uneven. Zengcheng in the east is more than Huadu in the west, and Conghua in the north is more than Panyu in the south. The rainfall in May was obviously high. The monthly rainfall in Laoba District, Panyu, Huadu, Zengcheng and Conghua was 638.8 mm, 569.5 mm, 498. 1 mm, 636.4 mm and 492.9 mm respectively, all higher than the same period in history. At the same time, the rainy season coincides with strong light and high heat, forming a fairly high climatic biological potential, reaching 77865 ~ 97950 kg/ha. The monsoon climate is prominent. The alternation of winter and summer monsoon is a remarkable feature of Guangzhou monsoon climate. The northerly wind in winter is formed by the cold air mass extending southward from the polar continent, and the weather is dry and cold; The southerly wind in summer is caused by the northward expansion of tropical ocean heating mass, and the weather is warm and humid. Summer monsoon usually turns into winter monsoon in September every year, and winter monsoon usually turns into summer monsoon in April every year. Meteorological disasters occur frequently. In recent years, extreme weather such as smog, continuous high temperature and local strong convective weather have appeared constantly, and meteorological disasters have become more and more frequent, which has brought certain impacts on industrial and agricultural production, transportation and citizens' lives in Guangzhou. In the middle and late July of 2006, due to the influence of typhoon periphery and subtropical high, Guangzhou continued to have hot weather for several days, and the extreme daily maximum temperature in some places was above 38℃. 65438+1October 18 From the early morning to the morning, several villages in Shiling Town and Huashan Town in Huadu District suddenly experienced heavy rain. Within 8 hours, the rainfall from Xinyang Village to Furong in Shiling Town reached 262.2 mm, and the rainstorm was extremely small in scope, strong in intensity and concentrated in time, resulting in the collapse of more than 70 houses in Shiling Town and Huashan Town, and the disaster was serious in a small area. 165438+1October 2 1 Sunday afternoon, there was a large-scale thunderstorm in Guangzhou. Heavy rains occurred in Zengcheng and Panyu, and hail fell from Conghua. A gust of wind of 17.9 m/s was recorded from Conghua Meteorological Observatory, and Liangkou was hit by thunderstorm, hail and strong wind one after another, causing certain losses. Rainstorms and hail in Guangzhou usually appear in spring and summer every year, but such violent local rainstorms and hail are rare in autumn and winter.

In spring, the East Asian monsoon is in the alternate season between the winter wind direction and the summer monsoon. The north-south airflow frequently meets, and the low pressure and frontal activity intensify. The climate in Zhejiang in spring is characterized by cold and rainy weather, frequent coastal and offshore winds, more rain in the whole province and uncertain weather. As the saying goes, "three faces change in spring." The average temperature in spring in Zhejiang is 13 ~ 18℃, and the temperature distribution is decreasing from inland areas to coastal and island areas. The precipitation in the whole province is 320 ~ 700 mm, and the distribution of precipitation gradually decreases from southwest to northeast coastal areas; The rainy days in the whole province are 4 1 ~ 62 days. The main meteorological disasters in spring are rainstorm, hail, strong wind and low temperature in late spring.

In summer, with the establishment of the summer monsoon circulation system, the southeast wind prevails in Zhejiang, and the subtropical high activity in the northwest Pacific has an important influence on the weather in Zhejiang, while the cold air from the north to the south still has a certain influence on the weather in Zhejiang. In the early summer, all parts of Zhejiang have entered the flood season one after another, commonly known as the "Meiyu" season, and the probability of heavy rain and heavy rain increases, which is easy to cause floods; In midsummer, affected by subtropical high, Zhejiang is prone to sunny, hot and rainy weather, leading to drought; Summer is the period with the greatest probability that tropical storms will affect Zhejiang. The summer climate in Zhejiang is characterized by high temperature, abundant precipitation, strong illumination, humid air and frequent meteorological disasters. The average summer temperature in the whole province is 24 ~ 28℃, and the temperature distribution is decreasing from the central area to the surrounding areas. The precipitation is 290 ~ 750 mm in various places, with more precipitation in eastern mountainous areas, such as Kuocang Mountain, Yandang Mountain and Siming Mountain, and less precipitation in islands and central areas. It rains for 32 to 55 days in all parts of the province. The main meteorological disasters in summer are typhoon, rainstorm, drought, high temperature, thunderstorm, strong wind and tornado.

In autumn, the summer monsoon gradually weakens and transitions to the winter monsoon. Cyclone activity is frequent, frontal precipitation is more, and temperature changes greatly. Characteristics of autumn climate in Zhejiang: in early autumn, Zhejiang is prone to intermittent rainy weather, commonly known as "autumn Lasha"; Mid-autumn, controlled by the high-pressure weather system, Zhejiang is prone to high-sky, light-cloud and sunny autumn weather, which is called "Koharu in October"; In late autumn, the influence of cold air in the north began to increase, and the conversion process between cold and warm weather and sunny and rainy weather was frequent, and the temperature fluctuated greatly. The average autumn temperature in the whole province is 16 ~ 2 1℃, with high temperatures in the southeast coastal and central areas and low temperatures in the northwest mountainous areas. The precipitation is 2 10 ~ 430mm, with more precipitation in the central and southern coastal mountainous areas and less precipitation in the northeast, but its interannual variation is great. It rains all over the province for 28 ~ 42 days. The main meteorological disasters in autumn are typhoon, rainstorm, low temperature, rainy weather and fog.

In winter, the strength of winter monsoon in East Asia mainly depends on the activity of Mongolian cold high pressure, while the weather in Zhejiang is affected by the cold air mass in the north (that is, winter monsoon), and there are relatively few types of weather processes. The winter climate in Zhejiang is characterized by abundant sunshine, cold and little rain, and dry air. The average winter temperature in the whole province is 3 ~ 9℃, and the temperature distribution is decreasing from south to north and from east to west. Precipitation 140 ~ 250 mm, except for the northeast islands, there is little difference in other places; The rainy days in all parts of the province are 28 ~ 4 1 day. The main meteorological disasters in winter are cold wave, freezing injury, strong wind, heavy snow and fog.