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| Titel |
Upper Arctic Ocean changes since 1992: freshwater, stratification and implications for biogeochemistry |
| VerfasserIn |
Benjamin Rabe, Karel Bakker, Mar Fernandez Mendez, Michael Karcher, Frank Kauker, Takashi Kikuchi, Richard Krishfield, Sergey Pisarev, John Toole, Ursula Schauer, Jie Su |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250094514
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| Publikation (Nr.) |
 EGU/EGU2014-9928.pdf |
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| Zusammenfassung |
| Recent decades have shown substantial changes in the Arctic Ocean, yet observations are still
relatively sparse compared to most other parts of the world’s oceans. Results from numerical
models still differ in the distribution of key variables, such as the pathways of liquid
freshwater.
From salinity observed by a variety of platforms since 1992 we are able to show a
substantial freshening in the upper Arctic Ocean impacting an increase in stratification
between the mixed-layer and the lower halocline. Based on temperature and salinity profiles,
we will present a first attempt at an objective analysis of mixed-layer depth changes during
the recent two decades.
Although most of the freshwater volume increase occurred on the Amerasian side of the
Arctic Ocean, the changes on the Eurasian side have strong implications not only for
the stratification but also the vertical exchange of nutrients in the upper ocean. |
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