干旱区生态环境知识资源中心(Arid): 沙尘天气对兰州市大气污染物置换和叠加作用

Arid

	沙尘天气对兰州市大气污染物置换和叠加作用
其他题名	Influence of dust storms on air pollution for replacement and addition in Lanzhou
	刘筱冉 1; 王金艳 2; 邱继勇 3; 李全喜 1; 董继元 4; 魏林波 1
来源期刊	中国环境科学
ISSN	1000-6923
出版年	2018
卷号	38 期号:5 页码:1646-1652
中文摘要	本文分析了2014~2015年兰州市春季沙尘天气期间颗粒污染物PM_(10)、PM_(2.5)及气态污染物SO_2、NO_2、CO和O_3质量浓度的演变规律.结果表明,沙尘天气造成PM_(10)和PM_(2.5)浓度上升,而SO_2、NO_2和CO浓度表现为降低(置换型)或升高(叠加型),O_3浓度受沙尘天气影响不明显.置换型的PM_(10)和PM_(2.5)平均质量浓度分别为1086.9和286mug/m~3,SO_2、NO_2和CO平均质量浓度分别为16.7、41.0和1.0210~3mug/m~3.叠加型的PM_(10)和PM_(2.5)平均质量浓度分别为383.2和116.2mug/m~3,SO_2、NO_2和CO平均质量浓度分别为24.5、49.1和1.1910~3mug/m~3.置换型的PM_(10)和PM_(2.5)平均质量浓度分别为叠加型的2.8和2.4倍,叠加型的SO_2、NO_2和CO平均质量浓度分别为置换型的1.47、1.2和1.17倍.置换型对应的气象条件为近地面东北方向大风、显著降温和高压,即强冷空气活动时,PM_(10)和PM_(2.5)浓度上升,而SO_2、NO_2和CO浓度显著减小,沙尘源地主要为塔克拉玛干沙漠和青藏高原北部地区,影响气流多为1500~6000m高空西北气流.叠加型则为近地面东北风向弱风,气温和气压无明显波动,即弱冷空气活动时,初期PM_(10)和PM_(2.5)浓度上升,同时SO_2、NO_2和CO浓度略下降,而后PM_(10)和PM_(2.5)维持高值时SO_2、NO_2和CO浓度亦上升,沙尘源地主要为巴丹吉林沙漠,影响气流多为1500m以下低空西北气流.
英文摘要	Characteristics of the concentrations of particulate pollutants PM_(10), PM_(2.5) and gaseous pollutants SO_2, NO_2, CO and O_3 during spring dust storms in 2014 and 2015 were analyzed. The result showed that dust storms could cause the increasement of PM_(10) and PM_(2.5) for both the replacement type and the addition type, while the decreasement of SO_2、NO_2 and CO for the replacement type, while the increasement for the addition type. However, the concentration of O_3 almost kept stable during spring dust storms. For the replacement type, the average concentrations of PM_(10) and PM_(2.5) were 1086.9 and 286mug/m~3 respectively, and those of SO_2, NO_2 and CO were 6.7, 41.0 and 1.0210~3mug/m~3 respectively. For the addition type, the average concentrations of PM_(10) and PM_(2.5) were 383.2 and 116.2mug/m~3 respectively, and those of SO_2, NO_2 and CO were 24.5, 49.1 and 1.1910~3mug/m~3respectively. In short, the average concentrations of PM_(10) and PM_(2.5) of the replacement type were 2.8 and 2.4 times more than those of the addition type, and the average concentrations of SO_2, NO_2 and CO of the replacement type were 1.47, 1.2 and 1.17times more than those of the addition type. The meteorological conditions of the replacement type were strong northeast wind near surface, significant temperature decreasement and high pressure. In other words, strong cold air activity resulted in increase of PM_(10) and PM_(2.5) and decrease of SO_2, NO_2 and CO. The dust sources of this type were in Taklimakan Desert and the northern part of Qinghai Tibet Plateau, and the influence flow were high-altitude northwest wind at the height of 1500 to 6000 meters. However, the meteorological conditions of the addition type were weak northeast wind near surface, no significant change of temperature and pressure. In other words, weak cold air activity resulted in increacement of PM_(10) and PM_(2.5) and decreacement of SO_2, NO_2 and CO at the early stage. And then, the concentrations of PM_(10) and PM_(2.5) kept at high levels, and the concentrations of SO_2, NO_2 and CO start to rise. The dust source of this type were mainly in Badan Jilin desert, and the influence flow was low-altitude northwest wind below 1500meters.
中文关键词	沙尘天气 ; 兰州市 ; 大气污染物 ; 置换 ; 叠加
英文关键词	dust weahter lanzhou air pollutants replacement addition
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6249695
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238675
作者单位	1.兰州大学大气科学学院, 兰州, 甘肃 730000, 中国; 2.兰州大学大气科学学院;;兰州大学, ;;半干旱气候变化教育部重点实验室, 兰州;;兰州, 甘肃;;甘肃 730000;;730000, 中国; 3.兰州大学大气科学学院;;中国人民解放军95871部队, ;;, 兰州;;衡阳, 甘肃;;湖南 730000;;421000, 中国; 4.兰州大学公共卫生学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘筱冉,王金艳,邱继勇,等. 沙尘天气对兰州市大气污染物置换和叠加作用[J]. 兰州大学,2018,38(5):1646-1652.
APA	刘筱冉,王金艳,邱继勇,李全喜,董继元,&魏林波.(2018).沙尘天气对兰州市大气污染物置换和叠加作用.中国环境科学,38(5),1646-1652.
MLA	刘筱冉,et al."沙尘天气对兰州市大气污染物置换和叠加作用".中国环境科学 38.5(2018):1646-1652.