中国环境科学
中國環境科學
중국배경과학
CHINA ENVIRONMENTAL SCIENCE
2009年
11期
1128-1133
,共6页
广州市%大气气溶胶%散射吸湿增长因子%外场观测%气团分类
廣州市%大氣氣溶膠%散射吸濕增長因子%外場觀測%氣糰分類
엄주시%대기기용효%산사흡습증장인자%외장관측%기단분류
Guangzhou City%atmospheric aerosol%hygroscopic growth factor%field experiment%air mass classification
利用环境湿度的日变化,对广州市大气气溶胶散射吸湿增长因子进行了观测研究.基于反向轨迹模型HYSPLIT,将2006年7月到达广州市区的气溶胶分为海洋型、海洋/城市混合型、城市型3个类型.整个观测期间,海洋型、海洋/城市混合型、城市型气溶胶的散射吸湿增长因子f(RH=80%)的平均值分别为2.68±0.59、2.29±0.28、2.04±0.28.经验公式f(RH)=1+a(RH/100)~b能够较好地拟合3种类型的气溶胶散射吸湿增长因子,海洋型、海洋城市混合型、城市型气溶胶的散射吸湿增长因子的拟合经验参数a分别为4.92、3.26、2.06,经验参数b分别为5.04、3.85、3.60.
利用環境濕度的日變化,對廣州市大氣氣溶膠散射吸濕增長因子進行瞭觀測研究.基于反嚮軌跡模型HYSPLIT,將2006年7月到達廣州市區的氣溶膠分為海洋型、海洋/城市混閤型、城市型3箇類型.整箇觀測期間,海洋型、海洋/城市混閤型、城市型氣溶膠的散射吸濕增長因子f(RH=80%)的平均值分彆為2.68±0.59、2.29±0.28、2.04±0.28.經驗公式f(RH)=1+a(RH/100)~b能夠較好地擬閤3種類型的氣溶膠散射吸濕增長因子,海洋型、海洋城市混閤型、城市型氣溶膠的散射吸濕增長因子的擬閤經驗參數a分彆為4.92、3.26、2.06,經驗參數b分彆為5.04、3.85、3.60.
이용배경습도적일변화,대엄주시대기기용효산사흡습증장인자진행료관측연구.기우반향궤적모형HYSPLIT,장2006년7월도체엄주시구적기용효분위해양형、해양/성시혼합형、성시형3개류형.정개관측기간,해양형、해양/성시혼합형、성시형기용효적산사흡습증장인자f(RH=80%)적평균치분별위2.68±0.59、2.29±0.28、2.04±0.28.경험공식f(RH)=1+a(RH/100)~b능구교호지의합3충류형적기용효산사흡습증장인자,해양형、해양성시혼합형、성시형기용효적산사흡습증장인자적의합경험삼수a분별위4.92、3.26、2.06,경험삼수b분별위5.04、3.85、3.60.
A method to calculate the aerosol hygroscopic growth factor/(RH), defined as the ratio of aerosol scattering coefficient at wet condition to that at dry condition, was proposed. Based on the back trajectory model HYSPLIT, the air masses arriving at Guangzhou in July 2006 were classified into marine, mixed and urban types, respectively. The mean value of aerosol hygroscopic growth factors at 80% RH [f(RH=80%)] in Guangzhou, were 2.04±0.28, 2.29±0.28, and 2.68±0.59 for urban aerosols, mixed aerosols, and marine aerosols, respectively. The relationship between f(RH) and RH was fitted by empirical equations f(RH)=1+α(RH/100)~b and the fitting parameter a was 2.06, 3.26 and 4.92 with b being 3.60, 3.85 and 5.04 for urban aerosols, mixed aerosols, and marine aerosols, respectively.
