THE ANALYSIS OF THE RELATIONSHIP BETWEEN THE AIR QUALITY IN SHANGHAI AND SURFACE PRESSURE PATTERNS AND METEOROLOGICAL FACTORS
THE ANALYSIS OF THE RELATIONSHIP BETWEEN THE AIR QUALITY IN SHANGHAI AND SURFACE PRESSURE PATTERNS AND METEOROLOGICAL FACTORS
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发表时间：
2010
影响因子：
1.2
通讯作者：
Yin Jun
中科院分区：
文献类型：
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作者：
Yin Jun
对2003—2005年上海空气质量与大范围气象天气因素的关系进行了分析，得出以下结论：(1)大陆高压系统主要出现在秋、冬季，低压槽主要出现在春季，夏季上海受副热带高压带和台风影响；(2)天气系统有四种，即： L型高压带，来自我国东部地区的冷空气，气压场均匀，气压较高，会导致空气污染，而台风、高压底部和高压后方往往与空气质量良好相关；(3)秋季或冬季，一次天气过程中，上海依次位于高压(含冷空气)前方、L型高压带、高压、高压后方、低压。 (4)不同气象要素与空气污染的关系不同:气压与空气污染物呈正相关,而气温、相对湿度、风速则与空气污染物呈负相关。
The relationship between air quality of Shanghai in 2003—2005 and large-scale meteorological and weather factors is analyzed.The following conclusions have been drawn:(1) Continental high pressure systems mainly occurred in autumn and winter while low pressure troughs mainly occurred in spring,and Shanghai was affected by the subtropical high-pressure belt and typhoons in summer;(2) There are four synoptic systems,namely,a L-shaped high pressure belt,cold air from the eastern area of China,uniform pressure field and high pressure,that can lead to air pollution,while typhoons,the base of high pressures and the back of high pressures are always related to good air quality;(3) In autumn or winter,for one weather process,Shanghai is sequentially located in the front of a high pressure (including cold air),a L-shaped high pressure belt,a high pressure,the back of it and a low pressure trough;at the same time,the concentration of PM10 rises at first and then drops;and (4) Different meteorological elements have different relationships with air pollution:air pressure is positively correlated with air pollutants while air temperature,relative humidity and wind speed are negatively correlated with them.