气象与环境学报
氣象與環境學報
기상여배경학보
JOURNAL OF METEOROLOGY AND ENVIRONMENT
2012年
4期
55-62
,共8页
赵胡笳%马雁军%王绪鑫%苏虹强%朱轶明
趙鬍笳%馬雁軍%王緒鑫%囌虹彊%硃軼明
조호가%마안군%왕서흠%소홍강%주질명
气溶胶光学厚度%波长指数%PM10%PM2.5%PM1.0%能见度
氣溶膠光學厚度%波長指數%PM10%PM2.5%PM1.0%能見度
기용효광학후도%파장지수%PM10%PM2.5%PM1.0%능견도
Aerosol optical depth%Angstrom exponent%PM10%PM2.5%PM1.0%Visibility
利用2010年9—11月鞍山大气成分监测站CE-318太阳光度计观测资料,依据气溶胶光学厚度测量原理,计算得到2010年鞍山秋季大气气溶胶光学厚度、波长指数等大气光学特性数据,通过统计,给出鞍山秋季气溶胶光学特性分布特征。结果表明：随着测量AOD波段的降低,AOD值逐渐增大,9月AOD平均值最大,10月AOD平均值次之,11月AOD平均值最小。从频率分布看,2010年9月AOD日平均值集中分布在0.4—0.6之间,10月和11月AOD日平均值集中分布在0.0—0.4之间,表明10—11月大气较为清洁;波长指数日平均值的频率分布说明秋季大气污染物以细粒子为主。500 nm的AOD值与波长指数为对数关系,两者在9、10月和11月的相关系数分别为0.5145、0.8412和0.2715;9月AOD与PM10、PM2.5和PM1.0质量浓度为较小负相关,10月和11月AOD与PM10、PM2.5和PM1.0质量浓度为正相关,且10月和11月AOD与气溶胶细粒子相关性较为显著。AOD值与能见度在趋势上呈较小的负相关性,可能是由于高层气溶胶粒子对气溶胶光学厚度产生了主要影响。
利用2010年9—11月鞍山大氣成分鑑測站CE-318太暘光度計觀測資料,依據氣溶膠光學厚度測量原理,計算得到2010年鞍山鞦季大氣氣溶膠光學厚度、波長指數等大氣光學特性數據,通過統計,給齣鞍山鞦季氣溶膠光學特性分佈特徵。結果錶明：隨著測量AOD波段的降低,AOD值逐漸增大,9月AOD平均值最大,10月AOD平均值次之,11月AOD平均值最小。從頻率分佈看,2010年9月AOD日平均值集中分佈在0.4—0.6之間,10月和11月AOD日平均值集中分佈在0.0—0.4之間,錶明10—11月大氣較為清潔;波長指數日平均值的頻率分佈說明鞦季大氣汙染物以細粒子為主。500 nm的AOD值與波長指數為對數關繫,兩者在9、10月和11月的相關繫數分彆為0.5145、0.8412和0.2715;9月AOD與PM10、PM2.5和PM1.0質量濃度為較小負相關,10月和11月AOD與PM10、PM2.5和PM1.0質量濃度為正相關,且10月和11月AOD與氣溶膠細粒子相關性較為顯著。AOD值與能見度在趨勢上呈較小的負相關性,可能是由于高層氣溶膠粒子對氣溶膠光學厚度產生瞭主要影響。
이용2010년9—11월안산대기성분감측참CE-318태양광도계관측자료,의거기용효광학후도측량원리,계산득도2010년안산추계대기기용효광학후도、파장지수등대기광학특성수거,통과통계,급출안산추계기용효광학특성분포특정。결과표명：수착측량AOD파단적강저,AOD치축점증대,9월AOD평균치최대,10월AOD평균치차지,11월AOD평균치최소。종빈솔분포간,2010년9월AOD일평균치집중분포재0.4—0.6지간,10월화11월AOD일평균치집중분포재0.0—0.4지간,표명10—11월대기교위청길;파장지수일평균치적빈솔분포설명추계대기오염물이세입자위주。500 nm적AOD치여파장지수위대수관계,량자재9、10월화11월적상관계수분별위0.5145、0.8412화0.2715;9월AOD여PM10、PM2.5화PM1.0질량농도위교소부상관,10월화11월AOD여PM10、PM2.5화PM1.0질량농도위정상관,차10월화11월AOD여기용효세입자상관성교위현저。AOD치여능견도재추세상정교소적부상관성,가능시유우고층기용효입자대기용효광학후도산생료주요영향。
Based on the observational data with CE-318 sun photometer in Anshan atmospheric composition monitoring station from September to November 2010,the atmospheric aerosol optical depth(AOD) and Angstrom exponent and so on were calculated according to the principles of AOD measurements.The optical feature of aerosol was analyzed in Anshan.The results indicate that AOD value increases with the decrease of wavelength.The mean maximum AOD value occurs in September,then in October,and the minimum one is in November.For the frequency distributions,the mean diurnal AOD values concentrate from 0.4 to 0.6 in September 2010 and from 0.0 to 0.4 in October and November 2010,respectively.These results suggest that the air is clean from October to November.According to the frequency distributions of Angstrom exponent,atmospheric pollutant is dominated by fine particles in autumn in Anshan.There is a logarithmic relationship between the AOD(500 nm) values and Angstrom exponent,and both correlation coefficients are 0.5145,0.8412 and 0.2715 in September,October and November,respectively.AOD value is a negative correlation with concentrations of PM10,PM2.5,PM1.0 in September,while it is a positive correlation in October and November.The correlation between AOD value and fine particle of aerosol is significant in October and November.There is a less negative correlation between AOD value and visibility,and it suggests that aerosol particles in upper level have a major impact on aerosol optical depth.
