气候变化领域集成服务门户(CCPortal): Marine organic matter in the remote environment of the Cape Verde islands-an introduction and overview to the MarParCloud campaign

CCPortal

DOI	10.5194/acp-20-6921-2020
	Marine organic matter in the remote environment of the Cape Verde islands-an introduction and overview to the MarParCloud campaign
	Van Pinxteren M.; Wadinga Fomba K.; Triesch N.; Stolle C.; Wurl O.; Bahlmann E.; Gong X.; Voigtländer J.; Wex H.; Robinson T-B.; Barthel S.; Zeppenfeld S.; Hans Hoffmann E.; Roveretto M.; Li C.; Grosselin B.; Daële V.; Senf F.; Van Pinxteren D.; Manzi M.; Zabalegui N.; Frka S.; Gašparović B.; Pereira R.; Li T.; Wen L.; Li J.; Zhu C.; Chen H.; Chen J.; Fiedler B.; Von Tümpling W.; Alana Read K.; Punjabi S.; Charles Lewis A.; Roland Hopkins J.; Jane Carpenter L.; Peeken I.; Rixen T.; Schulz-Bull D.; Monge M.E.; Mellouki A.; George C.; Stratmann F.; Herrmann H.
发表日期	2020
ISSN	1680-7316
起始页码	6921
结束页码	6951
卷号	20 期号:11
英文摘要	The project MarParCloud (Marine biological production, organic aerosol Particles and marine Clouds: a process chain) aims to improve our understanding of the genesis, modification and impact of marine organic matter (OM) from its biological production, to its export to marine aerosol particles and, finally, to its ability to act as ice-nucleating particles (INPs) and cloud condensation nuclei (CCN). A field campaign at the Cape Verde Atmospheric Observatory (CVAO) in the tropics in September-October 2017 formed the core of this project that was jointly performed with the project MARSU (MARine atmospheric Science Unravelled). A suite of chemical, physical, biological and meteorological techniques was applied, and comprehensive measurements of bulk water, the sea surface microlayer (SML), cloud water and ambient aerosol particles collected at a ground-based and a mountain station took place. Key variables comprised the chemical characterization of the atmospherically relevant OM components in the ocean and the atmosphere as well as measurements of INPs and CCN. Moreover, bacterial cell counts, mercury species and trace gases were analyzed. To interpret the results, the measurements were accompanied by various auxiliary parameters such as air mass back-trajectory analysis, vertical atmospheric profile analysis, cloud observations and pigment measurements in seawater. Additional modeling studies supported the experimental analysis. During the campaign, the CVAO exhibited marine air masses with low and partly moderate dust influences. The marine boundary layer was well mixed as indicated by an almost uniform particle number size distribution within the boundary layer. Lipid biomarkers were present in the aerosol particles in typical concentrations of marine background conditions. Accumulation-and coarse-mode particles served as CCN and were efficiently transferred to the cloud water. The ascent of ocean-derived compounds, such as sea salt and sugar-like compounds, to the cloud level, as derived from chemical analysis and atmospheric transfer modeling results, denotes an influence of marine emissions on cloud formation. Organic nitrogen compounds (free amino acids) were enriched by several orders of magnitude in submicron aerosol particles and in cloud water compared to seawater. However, INP measurements also indicated a significant contribution of other non-marine sources to the local INP concentration, as (biologically active) INPs were mainly present in supermicron aerosol particles that are not suggested to undergo strong enrichment during ocean-atmosphere transfer. In addition, the number of CCN at the supersaturation of 0.30 % was about 2.5 times higher during dust periods compared to marine periods. Lipids, sugar-like compounds, UV-absorbing (UV: ultraviolet) humic-like substances and low-molecularweight neutral components were important organic compounds in the seawater, and highly surface-active lipids were enriched within the SML. The selective enrichment of specific organic compounds in the SML needs to be studied in further detail and implemented in an OM source function for emission modeling to better understand transfer patterns, the mechanisms of marine OM transformation in the atmosphere and the role of additional sources. In summary, when looking at particulate mass, we see oceanic compounds transferred to the atmospheric aerosol and to the cloud level, while from a perspective of particle number concentrations, sea spray aerosol (i.e., primary marine aerosol) contributions to both CCN and INPs are rather limited. © Author(s) 2020.
语种	英语
scopus关键词	aerosol; air mass; biological production; cloud condensation nucleus; dust; marine environment; meteorology; organic matter; sea surface; Cape Verde [Macaronesia]; Bacteria (microorganisms)
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247713
作者单位	Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, 04318, Germany; Leibniz Institute for Baltic Sea Research Warnemuende, Rostock, 18119, Germany; Institute for Chemistry and Biology of the Marine Environment, Carl-von-Ossietzky University Oldenburg, Wilhelmshaven, 26382, Germany; Leibniz Centre for Tropical Marine Research (ZMT), Bremen, 28359, Germany; Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, Villeurbanne, 69626, France; Institut de Combustion, Aérothermique, Réactivité et Environnement, Centre National de la Recherche Scientifique, Orléans, France; Centro de Investigaciones en Bionanociencias (CIBION), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, C1425FQD, Argentina; Division for Marine and Environmental Research, Ruder Bošković Institute, Zagreb, 10000, Croatia; Lyell Centre, Heriot-Watt University, Edinburgh, EH14 4AP, United Kingdom; School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, ...
推荐引用方式 GB/T 7714	Van Pinxteren M.,Wadinga Fomba K.,Triesch N.,et al. Marine organic matter in the remote environment of the Cape Verde islands-an introduction and overview to the MarParCloud campaign[J],2020,20(11).
APA	Van Pinxteren M..,Wadinga Fomba K..,Triesch N..,Stolle C..,Wurl O..,...&Herrmann H..(2020).Marine organic matter in the remote environment of the Cape Verde islands-an introduction and overview to the MarParCloud campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(11).
MLA	Van Pinxteren M.,et al."Marine organic matter in the remote environment of the Cape Verde islands-an introduction and overview to the MarParCloud campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.11(2020).