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广州南沙气溶胶散射系数变化特征及影响因素分析研究
引用本文:王开燕,邓雪娇,邓涛.广州南沙气溶胶散射系数变化特征及影响因素分析研究[J].环境科学与管理,2013,38(8):70-74.
作者姓名:王开燕  邓雪娇  邓涛
作者单位:1. 广州市南沙区气象局,广东广州,511458
2. 中国气象局广州热带海洋气象研究所,广东广州,510080
基金项目:国家自然科学基金项目,广东省科技计划项目,国家重点基础研究发展规划(973)项目,广东省气象局科技创新团队计划,热带基金项目2012
摘    要:利用广州南沙气象探测基地大气成分站2011年散射系数和常规气象观测资料,分析了散射系数的变化特征及气象因子对散射系数的影响,并重点讨论了气象条件中风对散射系数的影响。结果表明:从全年散射系数平均值来看,雾霾日〉霾日〉雾日〉一般日,从季节来看,春季、夏季和秋季的雾霾日〉霾日,冬季的霾日和雾霾日消光系数接近,一年中散射系数的最大值出现在12月,最小值出现在8月。雾日和霾日的散射系数日变化呈单峰形,雾霾日呈双峰型分布,一般日没有明显日变化。散射系数同日照、湿度、气温和风速都负相关,日照、气温和湿度的相关关系最为明显。散射系数的高值出现在偏北风中,外来源的输送对南沙散射系数存在较为明显的影响。风速在小于7.5m/s时散射系数都是随着风速的增加而减小,当风速大于7.5m/s时,散射系数随风速的变化不规律。

关 键 词:散射系数  气象要素  南沙

Variation Characteristics and Influencing Factors of Aerosol Scattering Coefficient in Guangzhou Nansha
Wang Kaiyan , Deng Xuejiao , Deng Tao.Variation Characteristics and Influencing Factors of Aerosol Scattering Coefficient in Guangzhou Nansha[J].Environmental Science and Management,2013,38(8):70-74.
Authors:Wang Kaiyan  Deng Xuejiao  Deng Tao
Institution:1. Nansha District Bureau of Meteorology, Guangzhou 511458, China; 2. Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration; Guangzhou 510080, China)
Abstract:Base on the aerosol scattering coefficient and meteorological data collected in 2011 at Nansha Meteorological Observation Base, this paper analyzed the variation characteristics and influences of aerosol scattering coefficient on meteorological elements, and discussed the effects of wind on the scattering coefficient. The results show that the average scattering coefficient in haze - fog days 〉 haze days 〉 fog days 〉 general days, haze days and haze - fog days is almost the same in winter, other seasons haze - fog days are greater than haze days. The peak and bottom value of scattering coefficient appear in December and August. Diurnal variation of scattering coefficient in fog and haze days are single - peak type, in haze days is double - peak type, and there is no obvious change in general days. Scattering coefficient is negatively correlated with sunshine, humidity, temperature and wind speed. High scattering coefficient value often appeared in the northerly wind flow. This indicates the transportation of pollutants from mega city has significant influences on the properties of aerosol of the regional background. Scattering coefficient increased as the wind speed increases when wind speed in less than 7.5m/s, while the wind is greater than 7.5m/s, the scatter- ing coefficient has no obvious change.
Keywords:scattering coefficient  meteorological elements  Nansha
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