Climate resources in Jinhua county

Jinhua has a subtropical monsoon climate. The general characteristics are four distinct seasons, moderate annual temperature, abundant heat and rainfall, and obvious dry and wet seasons. In spring, the temperature rises rapidly, but the temperature changes irregularly. Rain is concentrated in late spring and early summer, with hail and strong winds. Summer is long and hot, rain and heat rise synchronously, often accompanied by drought; Autumn is cool, the air is humid and the time is short; Winter is sunny, cold and dry, and the atmospheric stratification is stable. The overall light and heat conditions are superior throughout the year, but the spatial and temporal distribution is uneven. There are various microclimates in the basin with certain vertical differences. Due to the uneven distribution of light and warm water elements and frequent disastrous weather, freezing injury in winter, heavy snow, low temperature and rain in spring and autumn, flood in plum flood season, high temperature in midsummer and drought in summer and autumn are the main climatic disasters in this city.

Jinhua is rich in heat resources, with an annual average temperature of 17.5℃, the lowest temperature in 2005 of 1984+06.6℃ and the highest temperature of 18.2℃. However, the distribution of heat resources is uneven, with the lowest temperature appearing in 65438+1October, and the historical extreme lowest temperature in Jinhua appearing in1977+1October 6 -9.6℃. The highest temperature is in July and August, and the historical extreme highest temperature appears at1961July 23rd and 4 1.2℃.

Jinhua is rich in annual rainfall, but the seasonal, interannual and regional changes of rainfall are great. The distribution of seasonal rainfall is unimodal, with more spring rain, more plum rain and less rainfall in summer, autumn and winter. The average annual total rainfall in Jinhua is 1424mm, and the rainfall fluctuates within the range of plus or minus 20% in most years. The maximum rainfall occurs in 19 18, and the minimum rainfall occurs in 19 18, which is 963mm. ..

Jinhua is rich in light energy resources and located in the high-value area of the province. The annual average sunshine percentage (sunshine hours as a percentage of allowable hours) is 43%, with an annual maximum of 55% and a minimum of 37%. Sunshine changes obviously during the year and its seasonal distribution is uneven. In summer, the days are long, sunny, partly cloudy, short in winter and cloudy in spring. The sunshine increases faster in spring and summer than in summer and autumn, so the sunshine is the most in summer and the least in winter, and the sunshine in autumn is better than that in spring.