钦州—南宁(10月20日)
钦州—南宁赛段比赛当天(10月20日),钦州、南宁平均气温23.1~24.3℃,平均昼夜温差7.2~8.5℃,极端最高气温32.7~33.3℃,极端最低气温13.3~14.4℃,日最高气温大于30℃的概率为23.4%~24.2%。日照略多,平均日照时数4.9~6.0小时,最多10.8~11.0小时。
10月20日钦州、南宁空气湿度较大,平均相对湿度70.1%~73.5%,最大相对湿度96%~97%,最小相对湿度42%~45%,出现相对湿度大于80%的潮湿天气的概率为36.5%~38.1%。
钦州、南宁10月20日平均日降水量1.1~1.4毫米,降水概率为26.6%~33.3%,中雨以上降水出现的概率为7.6%~9.4%,没有出现过暴雨,最大日降水量23.4~32.2毫米。雷电出现的概率仅4.5%~4.6%。
10月20日钦州、南宁能见度较好,平均能见度15.7~15.9公里;钦州雾、霾出现的概率为1.5%,南宁雾出现的概率为1.5%,但霾出现的概率为13.6%。平均风速1.2~2.5米/秒,历史极大风速14米/秒。
Qinzhou-Nanning (Oct. 20)
For the race day of Qinzhou-Nanning stage(Oct.20),the mean temperature of Qinzhou and Nanning is 23.1~24.3℃,the average diurnal temperature is 7.2~8.5℃,extreme maximum temperature is 32.7-33.3℃,and extreme maximum temperature is 13.3-14.4℃,the probability of temperature higher than 30℃ is 23.4-24.2%, sunshine is a little above average value and the mean sunshine duration is 4.9-6.0 hours with the most 10.8-11.0 hours.
Humidity of Qinzhou and Nanning is high on October 20, and the mean relative humidity is 70.1-73.5%, the highest is 96-97% and the lowest is 42-45%. Besides, the probability of moist weather that relative humidity is more than 80% is 36.5-38.1%.
Daily mean precipitation of Qinzhou and Nanning is 1.1-1.4mm on October 20, the probability of precipitation is 26.6-33.3%, probability of above moderate rain class is 7.6-9.4% while above heavy rain class have not occurred in history. The most daily precipitation is 23.4-32.2mm. Probability of Thunder and lighting is only 4.5-4.6%.
Visibility of Qinzhou and Nanning is clear on October 20, mean visibility is 15.7-15.9km. Probability of fog or haze in Qinzhou is 1.5%. Probability of fog in Nanning is 1.5%, but haze’s is 13.6%. Mean wind speed is 1.2-2.5m/s with extreme strong wind 14m/s.
Table 2 Statistics of meteorological elements in historical period for the race day of Qinzhou-Nanning Stage (Oct. 20)
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