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Marine microgels as...
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Orellana, Monica V.
(author)
Marine microgels as a source of cloud condensation nuclei in the high Arctic
- Article/chapterEnglish2011
Publisher, publication year, extent ...
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2011-08-08
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Proceedings of the National Academy of Sciences,2011
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:su-68302
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-68302URI
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https://doi.org/10.1073/pnas.1102457108DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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authorCount :6
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Marine microgels play an important role in regulating ocean basin-scale biogeochemical dynamics. In this paper, we demonstrate that, in the high Arctic, marine gels with unique physicochemical characteristics originate in the organic material produced by ice algae and/or phytoplankton in the surface water. The polymers in this dissolved organic pool assembled faster and with higher microgel yields than at other latitudes. The reversible phase transitions shown by these Arctic marine gels, as a function of pH, dimethylsulfide, and dimethylsulfoniopropionate concentrations, stimulate the gels to attain sizes below 1 mu m in diameter. These marine gels were identified with an antibody probe specific toward material from the surface waters, sized, and quantified in airborne aerosol, fog, and cloud water, strongly suggesting that they dominate the available cloud condensation nuclei number population in the high Arctic (north of 80 degrees N) during the summer season. Knowledge about emergent properties of marine gels provides important new insights into the processes controlling cloud formation and radiative forcing, and links the biology at the ocean surface with cloud properties and climate over the central Arctic Ocean and, probably, all oceans.
Subject headings and genre
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air-sea exchange
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immunological probes
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Melosira arctica
Added entries (persons, corporate bodies, meetings, titles ...)
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Matrai, Patricia A.
(author)
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Leck, CarolineStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)leck
(author)
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Rauschenberg, Carlton D.
(author)
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Lee, Allison M.
(author)
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Coz, EstherStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)escoz
(author)
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Stockholms universitetMeteorologiska institutionen (MISU)
(creator_code:org_t)
Related titles
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In:Proceedings of the National Academy of Sciences of the United States of America: Proceedings of the National Academy of Sciences108:33, s. 13612-136170027-84241091-6490
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