Idealised modelling of the Northern Annular Mode: orographic and thermal impacts


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msempf [ at ] awi-potsdam.de

Abstract

In an idealized model of northern hemisphere's wintertime atmospheric circulation, it is shown that the Northern Annular Mode arises from an annularpattern on a rotating aqua-planet and is modified to a zonally asymmetric pattern by land-sea contrasts and orography, connected with the localizationof transient baroclinic activity.



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Article
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Peer-reviewed
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Published
Eprint ID
12983
DOI 10.1002/asl.106

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Sempf, M. , Dethloff, K. , Handorf, D. and Kurgansky, M. (2005): Idealised modelling of the Northern Annular Mode: orographic and thermal impacts , Atmospheric science letters, 6 , pp. 140-144 . doi: 10.1002/asl.106


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