Marine organic matter in the remote environment of the Cape Verde Islands – An introduction and overview to the MarParCloud campaign

Autor: M. van Pinxteren, K. W. Fomba, N. Triesch, C. Stolle, O. Wurl, E. Bahlmann, X. Gong, J. Voigtländer, H. Wex, T.-B. Robinson, S. Barthel, S. Zeppenfeld, E. H. Hoffmann, M. Roveretto, C. Li, B. Grosselin, V. Daële, F. Senf, D. van Pinxteren, M. Manzi, N. Zabalegui, S. Frka, B. Gašparović, R. Pereira, T. Li, L. Wen, J. Li, C. Zhu, H. Chen, J. Chen, B. Fiedler, W. von Tümpling, K. A. Read, S. Punjabi, A. C. Lewis, J. R. Hopkins, L. J. Carpenter, I. Peeken, T. Rixen, D. Schulz-Bull, M. E. Monge, A. Mellouki, C. George, F. Stratmann, H. Herrmann
Přispěvatelé: Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut des Sciences de l'Ingénierie et des Systèmes (INSIS)
Rok vydání: 2019
Předmět:
Atmospheric Science
food.ingredient
010504 meteorology & atmospheric sciences
INP
010501 environmental sciences
Atmospheric sciences
Sea surface microlayer
complex mixtures
01 natural sciences
Cape verde
lcsh:Chemistry
purl.org/becyt/ford/1 [https]
purl.org/becyt/ford/1.5 [https]
food
OCEAN
AEROSOLS
purl.org/becyt/ford/1.4 [https]
Cloud condensation nuclei
MarParCloud
MARSU
organic matter
seawater
sea surface microlayer
aerosol particles
91 cloud water
Cape Verde Atmospheric Observatory (CVAO)
14. Life underwater
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Sea salt
SEA SURFACE MICROLAYER
Particulates
Sea spray
ATMOSPHERE
lcsh:QC1-999
Aerosol
Interdisciplinary Natural Sciences
lcsh:QD1-999
13. Climate action
CAPE VERDE
Environmental science
Seawater
lcsh:Physics
CNN
Zdroj: Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics, European Geosciences Union, 2020, 20 (11), pp.6921-6951. ⟨10.5194/acp-20-6921-2020⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Atmospheric Chemistry and Physics, Vol 20, Pp 6921-6951 (2020)
EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 20, pp. 6921-6951, ISSN: 1680-7316
ISSN: 1680-7316
1680-7324
DOI: 10.5194/acp-2019-997
Popis: 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-molecular-weight 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. Fil: van Pinxteren, Manuela. Tropos; Alemania Fil: Fomba, Khanneh Wadinga. Tropos; Alemania Fil: Triesch, Nadja. Tropos; Alemania Fil: Stolle, Christian. Carl-von-Ossietzky University Oldenburg; Alemania Fil: Wurl, Oliver. Carl-von-Ossietzky University Oldenburg; Alemania Fil: Bahlmann, Enno. Leibniz Institute For Baltic Sea Research Warnemuende; Alemania. Leibniz Centre for Tropical Marine Research; Alemania Fil: Gong, Xianda. Tropos; Alemania Fil: Voigtländer, Jens. Tropos; Alemania Fil: Wex, Heike. Tropos; Alemania Fil: Robinson, Tiera-Brandy. Carl-von-ossietzky University Oldenburg; Alemania Fil: Barthel, Stefan. Tropos; Alemania Fil: Zeppenfeld, Sebastian. Tropos; Alemania Fil: Hoffmann, Erik Hans. Tropos; Alemania Fil: Roveretto, Marie. Universite Claude Bernard Lyon 1. Institut de Physique Nucléaire de Lyon.; Francia Fil: Li, Chunlin. Universite Claude Bernard Lyon 1. Institut de Physique Nucléaire de Lyon.; Francia Fil: Grosselin, Benoit. Centre National de la Recherche Scientifique; Francia Fil: Daële, Veronique. Centre National de la Recherche Scientifique; Francia Fil: Senf, Fabian. Tropos; Alemania Fil: van Pinxteren, Dominik. Tropos; Alemania Fil: Manzi, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina Fil: Zabalegui, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina Fil: Frka, Sanja. Ruđer Boković Institute; Croacia Fil: Gašparović, Blaženka. Ruđer Boković Institute; Croacia Fil: Pereira, Ryan. Heriot watt University; Reino Unido Fil: Li, Tao. Shandong University; China Fil: Wen, Liang. Shandong University; China Fil: Li, Jiarong. Fudan University; China Fil: Zhu, Chao. Fudan University; China Fil: Chen, Hui. Fudan University; China Fil: Chen, Jianmin. Fudan University; China Fil: Fiedler, Björn. Geomar Helmholtz Centre For Ocean Research; Alemania Fil: von Tümpling, Wolf. Helmholtz Centre for Environmental Research; Alemania Fil: Read, Katie Alana. University of York; Reino Unido Fil: Punjabi, Shalini. University of York; Reino Unido Fil: Lewis, Alastair Charles. University of York; Reino Unido Fil: Hopkins, James Roland. University of York; Reino Unido Fil: Carpenter, Lucy Jane. University of York; Reino Unido Fil: Peeken, Ilka. Alfred Wegener Institute Helmholtz Centre For Polar And; Alemania Fil: Rixen, Tim. Leibniz Centre For Tropical Marine Research; Alemania Fil: Schulz-Bull, Detlef. Leibniz Institute For Baltic Sea Research Warnemuende; Alemania Fil: Monge, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
Databáze: OpenAIRE
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