Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-5515-2017 |
Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer | |
Burkart, Julia1; Willis, Megan D.1; Bozem, Heiko2,3; Thomas, Jennie L.3; Law, Kathy; Hoor, Peter2; Aliabadi, Amir A.4; Koellner, Franziska5; Schneiders, Johannes5; Herber, Andreas6; Abbatt, Jonathan P. D.1; Leaitch, W. Richard7 | |
2017-05-02 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Germany; France |
英文摘要 | Motivated by increasing levels of open ocean in the Arctic summer and the lack of prior altitude-resolved studies, extensive aerosol measurements were made during 11 flights of the NETCARE July 2014 airborne campaign from Resolute Bay, Nunavut. Flights included vertical profiles (60 to 3000 m above ground level) over open ocean, fast ice, and boundary layer clouds and fogs. A general conclusion, from observations of particle numbers between 5 and 20 nm in diameter (N5-20), is that ultrafine particle formation occurs readily in the Canadian high Arctic marine boundary layer, especially just above ocean and clouds, reaching values of a few thousand particles cm(-3). By contrast, ultra fine particle concentrations are much lower in the free troposphere. Elevated levels of larger particles (for example, from 20 to 40 nm in size, N20-40) are sometimes associated with high N5-20, especially over low clouds, suggestive of aerosol growth. The number densities of particles greater than 40 nm in diameter (N-> 40) are relatively depleted at the lowest altitudes, indicative of depositional processes that will lower the condensation sink and promote new particle formation. The number of cloud condensation nuclei (CCN; measured at 0.6 % supersaturation) are positively correlated with the numbers of small particles (down to roughly 30 nm), indicating that some fraction of these newly formed particles are capable of being involved in cloud activation. Given that the summertime marine Arctic is a biologically active region, it is important to better establish the links between emissions from the ocean and the formation and growth of ultrafine particles within this rapidly changing environment. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400506500002 |
WOS关键词 | NUMBER-SIZE DISTRIBUTIONS ; AEROSOL NUMBER ; OCEANIC PHYTOPLANKTON ; AIRBORNE OBSERVATIONS ; ZEPPELIN STATION ; AIR-POLLUTION ; CLOUD-ALBEDO ; NY-ALESUND ; GROWTH ; NUCLEATION |
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/30503 |
专题 | 地球科学 |
作者单位 | 1.Univ Toronto, Dept Chem, Toronto, ON, Canada; 2.Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, Mainz, Germany; 3.Sorbonne Univ, CNRS, UPMC Univ Paris 06, LATMOS IPSL,UVSQ, Paris, France; 4.Univ Guelph, Environm Engn Program, Guelph, ON, Canada; 5.Max Planck Inst Chem, Particle Chem Dept, Mainz, Germany; 6.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Bremerhaven, Germany; 7.Environm & Climate Change Canada, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | Burkart, Julia,Willis, Megan D.,Bozem, Heiko,et al. Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(8). |
APA | Burkart, Julia.,Willis, Megan D..,Bozem, Heiko.,Thomas, Jennie L..,Law, Kathy.,...&Leaitch, W. Richard.(2017).Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(8). |
MLA | Burkart, Julia,et al."Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.8(2017). |
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