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  On spatial scales and lifetimes of SST anomalies beneath a diffusive atmosphere

Marotzke, J., & Pierce, D. (1997). On spatial scales and lifetimes of SST anomalies beneath a diffusive atmosphere. Journal of Physical Oceanography, 27(1), 133-139. doi:10.1175/1520-0485(1997)027<0133:OSSALO>2.0.CO;2.

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JPO-27-1997-133 (Verlagsversion), 4KB
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JPO-27-1997-133
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 Urheber:
Marotzke, Jochem1, Autor           
Pierce, DW1, Autor
Affiliations:
1external, ou_persistent22              

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Schlagwörter: GENERAL-CIRCULATION MODELS; SEA-SURFACE TEMPERATURE; THERMOHALINE CIRCULATION; NORTH-ATLANTIC; OCEAN; HEAT; TRANSPORTS; FEEDBACKOceanography;
 Zusammenfassung: The authors identify spatial and temporal scales in a one-dimensional linear, diffusive atmospheric energy balance model coupled everywhere to a slab mixed layer of fixed depth. Mathematically, the model is identical to a heat conducting rod, which over its entire length both radiates and is in contact with a large but finite ''reservoir.'' Three characteristic timescales mark, respectively, the atmosphere's adjustment to a sea surface temperature (SST) anomaly, the decay of a pointwise SST anomaly, and the radiative decay of a large-scale SST anomaly. The first and the third of these timescales are associated with diffusive length scales characterizing, respectively: the distance over which heat is diffused in the atmosphere before being lost to the ocean beneath, and the distance over which heat is diffused in the coupled system before being radiated to space. For spatial scales between the two diffusive lengths, the SST anomaly does not decay exponentially but with the square root of time; this regime has not previously been identified. Apparent discrepancies between published discussions of diffusive length scales are reconciled.

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Sprache(n): eng - English
 Datum: 1997-011997
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: ISI: A1997WG32100009
DOI: 10.1175/1520-0485(1997)027<0133:OSSALO>2.0.CO;2
Anderer: A [12]
 Art des Abschluß: -

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Titel: Journal of Physical Oceanography
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Boston, MA : American Meteorological Society
Seiten: - Band / Heft: 27 (1) Artikelnummer: - Start- / Endseite: 133 - 139 Identifikator: ISSN: 0022-3670
CoNE: https://pure.mpg.de/cone/journals/resource/954925417986