Climatic characteristics of Hainan

The climate characteristics of South Island are: strong sunlight, small variation of day length, abundant solar radiation heat energy, no winter in summer, short spring and autumn, high active accumulated temperature, obvious seasonal variation of wind direction and large monsoon index, which belongs to a typical tropical monsoon climate. Due to the change of monsoon, the weather system is not only mainly controlled by tropical weather systems (typhoon, tropical airflow convergence zone, easterly wave, etc.), but also has obvious seasonal changes. ). In winter monsoon season, it is also influenced by cold air system (cold high-pressure ridge, weak cold front, static front, etc.). South of the temperate zone and the utilization of topography lead to abundant annual rainfall in Hainan Island, but the regional difference of its temporal and spatial distribution is very prominent: the central mountainous area and the windward slope along the eastern coast have the largest annual rainfall and the longest rainy season (May ~ 165438+ 10). The leeward side of the west coast has the least rainfall all year round, with a dry season in one month and a rainy season in four months (June-September). Make rational use of the favorable climatic conditions in Hainan Island, and transform the unfavorable climatic conditions through large-scale water conservancy construction and shelter belt construction. Develop strengths and avoid weaknesses, adjust measures to local conditions, and gradually build Hainan Island into a tropical cash crop, precious trees and breeding base, and become a "treasure island" for utilizing solar energy.