北部湾海雾气候特征及变化初步解释

发布时间：2018-04-29 14:04

  本文选题：海雾 + 气候特征　； 参考：《科学技术与工程》2016年36期

【摘要】：利用广西北部湾典型地面气象观测站数据,全面分析广西北部湾地区轻雾、大雾的年际、年代际、逐月变化规律;并在此基础上利用气温和相对湿度多个气候因子分析北部湾海雾气候特征变化的可能原因。结果表明:广西北部湾地区多数站点轻雾发生频次呈增加趋势,其发生频次经过不同次数和幅度的波动。总体来说,多数站点轻雾20世纪70年代前为降低趋势,70年代后为增加趋势;各站点轻雾年代际变化规律波动较大。北部湾地区多数站点大雾发生频次呈减少趋势,较之于轻雾而言,其波动更频繁,周期更短。多数站点20世纪80年代前为增加趋势,80年代后为减少趋势;各站点大雾年代际变化规律波动也较大。各站点轻雾、大雾主要集中发生在每年在1~4月和12月,这5个月轻雾出现概率达53.9%~83.3%、大雾出现概率达80.1%~98.4%。北部湾地区温度的升高和大气湿度的降低是其轻雾日数增加和大雾日数减少的可能原因。
[Abstract]:Based on the data of typical surface meteorological observation station in Beibu Gulf of Guangxi, the variation of light fog and heavy fog in Beibu Gulf region of Guangxi is analyzed in terms of interannual, decadal and monthly variation. On this basis, the possible reasons for the variation of climate characteristics of sea fog in Beibu Gulf were analyzed by using several climatic factors of air temperature and relative humidity. The results show that the frequency of light fog in most stations of Beibu Gulf of Guangxi shows an increasing trend and its frequency fluctuates through different times and ranges. On the whole, most stations had a decreasing trend before the 1970s and an increasing trend after the 1970s, and the interdecadal variation of light fog at most stations fluctuated greatly. The occurrence frequency of fog in most stations of Beibu Gulf shows a decreasing trend, which fluctuates more frequently and has a shorter period than that of light fog. Most sites increased the trend before the 1980s and decreased after the 1980s, and the interdecadal variation of fog at various stations fluctuated greatly. The fog occurred mainly in January to April and December of each year. The probability of light fog in these five months was 53.9 and 83.3, and the probability of heavy fog was 80.1 and 898.498.498.498.498. The increase of temperature and the decrease of atmospheric humidity in Beibu Gulf are the possible reasons for the increase of light fog days and the decrease of heavy fog days.
【作者单位】： 广西壮族自治区气象减灾研究所/国家卫星气象中心遥感应用试验基地气象GIS应用联合实验室;
【基金】：广西自然学科学基金(2013GXNSFBA019225,2012GXNSFBA053133,2013GXNSFAA019288) 广西科学研究与技术开发计划(桂科攻1598017-13)资助
【分类号】：P732

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