【摘要】 根据海南岛西部1951~2003年气候资料,统计分析了气温、降水、干燥度和风等几个主要气候指标,研究表明:近53年来海南岛西部多年平均气温24.8℃,平均年较差16.1℃,冬季气温变异系数大,稳定性差;降水集中,季节分配不均,多年平均降水量为967.5mm,冬半年平均雨量106.4mm,年降水离差系数较大,冬、春两季降水不稳定,年降水日数偏少且季节分配差异明显,冬、春季无降水日数长;多年平均干燥度为1.97,属于半干旱区,年平均风速为4.6m/s,全年大风日数达30d以上,大风日数以冬半年较多.更多还原

【Abstract】 According to the climate data of the West of Hainan Island from 1951 to 2003,the climatic indexes,for example,temperature,precipitation and wind,was analysed.The results show that the annual average temperature is 24.8℃ and the comparative difference of annual average temperature is 16.1℃.The temperature variance modulus is large and unstable in the winter.The precipitation is centralized and distributed unevenly in a year.The annual average precipitation is 967.5 mm and the annual average precipitation in the winter half-year is 967.5 mm.In addition,the comparative difference of the annual average precipitation is comparatively large and unstable in the spring or winter.The days of precipitation are few and distributed unevenly in a year.At last,the annual average dryness degree is 1.97,and the West of Hainan Island is considered to be a semi-aridity district.The annual average wind speed is 4.6 m/s.The annual gale-times are more than 30 days and the gale days in the wind half-year are comparatively more than in the summer half-year.;更多还原