郑州黑碳气溶胶质量浓度及气象要素日变化特征  

Diurnal variation characteristics of black carbon aerosol mass concentration and meteorological elements in Zhengzhou

作　　者：郑丹 周顺武 郭建平[2] 多典洛珠 王传辉[3] ZHENG Dan;ZHOU Shun-wu;GUO Jian-ping;Duodian Luozhu;WANG Chuan-hui(School of Atmospheric Sciences,Nanjing University of Information Science&Technology:Key Laboratory of Meteorological Disaster,Ministry of Education of the People’s Republic of China,Joint International Research Laboratory of Climate and Environment Change,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Joint Center for Data Assimilation Research and Applications,Nanjing 210044,China;State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China;Anhui Provincial Meteorological Bureau,Hefei 230061,China)

机构地区：[1]南京信息工程大学大气科学学院,气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室/资料同化研究与应用中心,江苏南京210044 [2]中国气象科学研究院灾害天气国家重点实验室,北京100081 [3]安徽省气象局,安徽合肥230061

出　　处：《云南大学学报（自然科学版）》2020年第6期1137-1146,共10页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家重点基础研究发展规划(2012CB9552003).

摘　　要：依据郑州大气本底站近6 a(2006—2011年)黑碳气溶胶(Black Carbon aerosol,BC)质量浓度观测数据,结合地面气象观测资料,分析了该站四季BC质量浓度日变化特征,并利用谐波分析的方法,探讨了各季BC质量浓度和地面主要气象要素(气温、相对湿度和风速)的日变化特征.结果表明:①郑州站BC质量浓度年平均值较高,在BC质量浓度高值季节(秋冬季)其日变化呈现“双峰型”,而在BC质量浓度低值季节(春夏季)则为“单峰型”;②该站四季地面气象要素的日变化均表现为“单峰型”:BC质量浓度高值时刻对应地面气温低值、地面相对湿度高值以及地面风速低值时刻;③谐波分析发现,郑州站秋冬季BC质量浓度日变化具有24 h+12 h周期,春夏季BC质量浓度日变化具有明显的24 h循环;④该站四季气象要素日变化24 h循环显著且均超前于BC质量浓度1~2 h,表明气象要素会对BC质量浓度产生影响.Based on the observation data of the Black Carbon aerosol(BC) mass concentration of the Zhengzhou Atmospheric Background Station in the last 6 years(2006—2011),and combined with the surface meteorological observation data,the daily variation characteristics of the BC mass concentration of the station during the four seasons were analyzed,and harmonic analysis was used to explore the daily variation characteristics of BC mass concentration and main meteorological elements(temperature,relative humidity,and wind speed) on the ground in each season.The results show that:① The annual average value of BC mass concentration in Zhengzhou is relatively high.The diurnal variation shows a "double-peak type" in high-BC mass concentration seasons(autumn and winter),and a "single-peak type" in low-BC mass concentration seasons(spring and summer);② The daily variations of meteorological elements in the four seasons show a "single-peak type",in which the moment of high BC mass concentration corresponds to the moment of low surface temperature,high surface relative humidity and low surface wind speed;③ Harmonic analysis found that the daily variation of BC mass concentration had a period of 24 h + 12 h in autumn and winter,and an obvious 24 h cycle in spring and summer;④ The 24 h cycle of the daily variations of meteorological elements at the station were significant and all are ahead of the BC mass concentration by 1—2 h,which suggested that meteorological elements could affect the BC mass concentration.

关 键 词：黑碳气溶胶 质量浓度 地面 气象要素 谐波分析 郑州 

分 类 号：X513[环境科学与工程—环境工程]