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DOI | 10.5194/acp-18-8249-2018 |
Airborne observations of newly formed boundary layer aerosol particles under cloudy conditions | |
Altstaedter, Barbara1; Platis, Andreas2; Jaehn, Michael3,5; Baars, Holger3; Lueckerath, Janine4; Held, Andreas4,6; Lampert, Astrid1; Bange, Jens2; Hermann, Markus3; Wehner, Birgit3 | |
2018-06-13 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:11页码:8249-8264 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Switzerland |
英文摘要 | This study describes the appearance of ultrafine boundary layer aerosol particles under classical "non-favourable" conditions at the research site of TROPOS (Leibniz Institute for Tropospheric Research). Airborne measurements of meteorological and aerosol properties of the atmospheric boundary layer (ABL) were repeatedly performed with the unmanned aerial system ALADINA (Application of Light-weight Aircraft for Detecting IN-situ Aerosol) during three seasons between October 2013 and July 2015. More than 100 measurement flights were conducted on 23 different days with a total flight duration of 53 h. In 26% of the cases, maxima of ultrafine particles were observed close to the inversion layer at altitudes between 400 and 600m and the particles were rapidly mixed vertically and mainly transported downwards during short time intervals of cloud gaps. This study focuses on two measurement days affected by low-level stratocumulus clouds, but different wind directions (NE, SW) and minimal concentrations (<4.6 mu gm(-3)) of SO2, as a common indicator for precursor gases at ground. Taken from vertical profiles, the onset of clouds led to a non-linearity of humidity that resulted in an increased turbulence at the local-scale and caused fast nucleation (e.g. Bigg, 1997; Wehner et al., 2010), but in relation to rapid dilution of surrounding air, seen in sporadic clusters of ground data, so that ultrafine particles disappeared in the verticality. The typical "banana shape" (Heintzenberg et al., 2007) of new particle formation (NPF) and growth was not seen at ground and thus these days might not have been classified as NPF event days by pure surface studies. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435181500005 |
WOS关键词 | SIZE-SEGREGATED CHARACTERIZATION ; RESEARCH STATION MELPITZ ; LONG-TERM ; FREQUENCY-RESPONSE ; LIDAR POLLY(XT) ; NUCLEATION ; AIRCRAFT ; GERMANY ; MODEL ; TURBULENCE |
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/15119 |
专题 | 地球科学 |
作者单位 | 1.Tech Univ Carolo Wilhelmina Braunschweig, Inst Flight Guidance, Braunschweig, Germany; 2.Eberhard Karls Univ Tubingen, Ctr Appl Geosci, Tubingen, Germany; 3.Leibniz Inst Tropospher Res, Leipzig, Germany; 4.Univ Bayreuth, Atmospher Chem, Bayreuth, Germany; 5.Swiss Fed Labs Mat Sci & Technol, Lab Air Pollut Environm Technol, Empa, Dubendorf, Switzerland; 6.Tech Univ Berlin, Environm Chem & Air Res, Berlin, Germany |
推荐引用方式 GB/T 7714 | Altstaedter, Barbara,Platis, Andreas,Jaehn, Michael,et al. Airborne observations of newly formed boundary layer aerosol particles under cloudy conditions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(11):8249-8264. |
APA | Altstaedter, Barbara.,Platis, Andreas.,Jaehn, Michael.,Baars, Holger.,Lueckerath, Janine.,...&Wehner, Birgit.(2018).Airborne observations of newly formed boundary layer aerosol particles under cloudy conditions.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(11),8249-8264. |
MLA | Altstaedter, Barbara,et al."Airborne observations of newly formed boundary layer aerosol particles under cloudy conditions".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.11(2018):8249-8264. |
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