GSTDTAP  > 地球科学
DOI10.5194/acp-19-5835-2019
Dynamic and timing properties of new aerosol particle formation and consecutive growth events
Salma, Imre; Nemeth, Zoltan
2019-05-03
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:9页码:5835-5852
文章类型Article
语种英语
国家Hungary
英文摘要

Dynamic properties, i.e. particle formation rate J(6) and particle diameter growth rate GR(10), and timing properties, i.e. starting time (t(1)) and duration time interval (Delta t) of 247 quantifiable atmospheric new aerosol particle formation (NPF) and growth events identified in the city centre and near-city background of Budapest over 6 full measurement years, together with related gas-phase H2SO4 proxy, condensation sink (CS) of vapours, basic meteorological data and concentrations of criteria pollutant gases were derived, evaluated, discussed and interpreted. In the city centre, nucleation ordinarily starts at 09:15 UTC + 1, and it is maintained for approximately 3 h. The NPF and growth events produce 4.6 aerosol particles with a diameter of 6 nm in 1 cm(3) of air in 1 s and cause the particles with a diameter of 10 nm to grow at a typical rate of 7.3 nm h (-1). Nucleation starts approximately 1 h earlier in the near-city background, and it shows substantially smaller J(6) (with a median of 2.0 cm(-3)s (-1)) and GR(10) values (with a median of 5.0 nm h(-1)), while the duration of nucleation is similar to that in the centre. Monthly distributions of the dynamic properties and daily maximum H2SO4 proxy do not follow the mean monthly pattern of the event occurrence frequency. The factors that control the event occurrence and that govern the intensity of particle formation and growth are not directly linked. New particle formation and growth processes advance in a different manner in the city and its close environment. This could likely be related to diversities in atmospheric composition, chemistry and physics. Monthly distributions and relationships among the properties mentioned provided indirect evidence that chemical species other than H2SO4 largely influence the particle growth and possibly atmospheric NPF process as well. The J(6), GR(10) and Delta t can be described by a log-normal distribution function. Most extreme dynamic proper- ties could not be explained by available single or compound variables. Approximately 40% of the NPF and growth events exhibited broad beginning, which can be an urban feature. For doublets, the later onset frequently shows more intensive particle formation and growth than the first onset by a typical factor of approximately 1.5. The first event is attributed to a regional type, while the second event, superimposed on the first, is often associated with subregional, thus urban NPF and growth processes.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000466883900001
WOS关键词CLOUD CONDENSATION NUCLEI ; ULTRAFINE ATMOSPHERIC AEROSOL ; SULFURIC-ACID ; NUCLEATION MODE ; SIZE DISTRIBUTIONS ; ORGANIC-COMPOUNDS ; BOUNDARY-LAYER ; URBAN ; AIR ; RATES
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/183162
专题地球科学
作者单位Eotvos Lorand Univ, Inst Chem, POB 32, H-1518 Budapest, Hungary
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Salma, Imre,Nemeth, Zoltan. Dynamic and timing properties of new aerosol particle formation and consecutive growth events[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(9):5835-5852.
APA Salma, Imre,&Nemeth, Zoltan.(2019).Dynamic and timing properties of new aerosol particle formation and consecutive growth events.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(9),5835-5852.
MLA Salma, Imre,et al."Dynamic and timing properties of new aerosol particle formation and consecutive growth events".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.9(2019):5835-5852.
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