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Ocean-Atmosphere Interactions of Gases and Particles (2014)

Liss, Peter S. [VerfasserIn]

Berlin, Heidelberg : Springer Berlin / Heidelberg

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Schlagwort(e): Electronic books

Beschreibung / Inhaltsverzeichnis: This book examines how gases and particles formed in the oceans affect the chemistry and physics of the atmosphere when they move from ocean to atmosphere. It also details how material deposited from the atmosphere affects the biogeochemistry of the oceans.

Materialart: Online-Ressource

Seiten: 1 online resource (366 pages)

ISBN: 9783642256431

Serie: Springer Earth System Sciences Ser.

URL: https://ebookcentral.proquest.com/lib/kxp/detail.action?docID=6422606

DDC: 551.5246

Sprache: Englisch

Anmerkung: Description based on publisher supplied metadata and other sources

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Atmospheric fluxes of organic N and P to the global ocean (2012)

Kanakidou, Maria ; Duce, Robert A. ; Prospero, Joseph M. ; [weitere]

AGU (American Geophysical Union)

In: Global Biogeochemical Cycles, 26 (3). GB3026.

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Publikationsdatum: 2020-11-04

Beschreibung: The global tropospheric budget of gaseous and particulate non-methane organic matter (OM) is re-examined to provide a holistic view of the role that OM plays in transporting the essential nutrients nitrogen and phosphorus to the ocean. A global 3-dimensional chemistry-transport model was used to construct the first global picture of atmospheric transport and deposition of the organic nitrogen (ON) and organic phosphorus (OP) that are associated with OM, focusing on the soluble fractions of these nutrients. Model simulations agree with observations within an order of magnitude. Depending on location, the observed water soluble ON fraction ranges from similar to 3% to 90% (median of similar to 35%) of total soluble N in rainwater; soluble OP ranges from similar to 20-83% (median of similar to 35%) of total soluble phosphorus. The simulations suggest that the global ON cycle has a strong anthropogenic component with similar to 45% of the overall atmospheric source (primary and secondary) associated with anthropogenic activities. In contrast, only 10% of atmospheric OP is emitted from human activities. The model-derived present-day soluble ON and OP deposition to the global ocean is estimated to be similar to 16 Tg-N/yr and similar to 0.35 Tg-P/yr respectively with an order of magnitude uncertainty. Of these amounts similar to 40% and similar to 6%, respectively, are associated with anthropogenic activities, and 33% and 90% are recycled oceanic materials. Therefore, anthropogenic emissions are having a greater impact on the ON cycle than the OP cycle; consequently increasing emissions may increase P-limitation in the oligotrophic regions of the world's ocean that rely on atmospheric deposition as an important nutrient source.

Materialart: Article , PeerReviewed

Format: text

DOI: 10.1029/2011GB004277

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