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2009年广州能见度变化规律及主要影响因素分析
引用本文:刘永红,冯婷,蔡铭.2009年广州能见度变化规律及主要影响因素分析[J].中国环境监测,2012,28(3):32-37.
作者姓名:刘永红  冯婷  蔡铭
作者单位:中山大学智能交通研究中心,广东广州,510275
摘    要:通过对2009年的广州大气能见度和影响因素的数据资料统计,结合定性分析、相关性计算及各时间尺度中物理量的相互作用过程研究,得出能见度的变化规律和各因素的相关性特征。结果表明,2009年整体能见度水平略有提高;24h的降雨量、气温差值较大时,该日的能见度小时均值波动较大;风速、相对湿度与中尺度(24h)能见度的相关性较强;降雨量、气温对小尺度(1h、5min)能见度影响显著;相对湿度水平能制约风速对能见度的改善作用。灰霾现象等与能见度水平密切相关。

关 键 词:能见度  气象因素  相关性  降雨量  相对湿度  风速
收稿时间:2010/10/17 0:00:00
修稿时间:2010/12/22 0:00:00

The Visibility Rules and the Main Influencing Factors Analysis of Guangzhou in 2009
LIU Yong-hong.The Visibility Rules and the Main Influencing Factors Analysis of Guangzhou in 2009[J].Environmental Monitoring in China,2012,28(3):32-37.
Authors:LIU Yong-hong
Institution:Intelligent Transportation Research Centre of Sun Yat-sen University, Guangzhou 510275, China;Intelligent Transportation Research Centre of Sun Yat-sen University, Guangzhou 510275, China;Intelligent Transportation Research Centre of Sun Yat-sen University, Guangzhou 510275, China
Abstract:Through counting the date of visibility and main influencing factors of Guangzhou in 2009,with the qualitative analysis,correlation calculation and the interaction of physical quantities in the different time scales,obtaining variation of visibility and the characteristics of the correlation factors.The results showed that: There was a slight improvement of visibility in 2009;24h rainfall;As the temperature difference is large,visibility hour value fluctuations;Wind speed,relative humidity are in the strong correlation with the mesoscale(24h)visibility;Rainfall,air temperature on the small-scale(1h、5min)significantly affected the visibility;Relative humidity levels can restrict the visibility improvement result of the wind speed.
Keywords:Visibility  Factors  Relevance  Rainfall  Relative humidity  Wind speed
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