A dynamical link between the Arctic and the global climate system

K. Dethloff; A. Rinke; A. Benkel; M. Køltzow; E. Sokolova; S. Kumar Saha; D. Handorf; W. Dorn; B. Rockel; H. von Storch; J. E. Haugen; L. P. Røed; E. Roeckner; J. H. Christensen; M. Stendel

doi:10.1029/2005GL025245

A dynamical link between the Arctic and the global climate system

K. Dethloff^*, A. Rinke, A. Benkel, M. Køltzow, E. Sokolova, S. Kumar Saha, D. Handorf, W. Dorn, B. Rockel, H. von Storch, J. E. Haugen, L. P. Røed, E. Roeckner, J. H. Christensen, M. Stendel

^*Corresponding author af dette arbejde

LUKKET: Geografi

60 Citationer (Scopus)

Abstract

By means of simulations with a global coupled AOGCM it is shown that changes in the polar energy sink region can exert a strong influence on the mid- and high-latitude climate by modulating the strength of the mid-latitude westerlies and storm tracks. It is found, that a more realistic sea-ice and snow albedo treatment changes the ice-albedo feedback and the radiative exchange between the atmosphere and the ocean-sea-ice system. The planetary wave energy fluxes in the middle troposphere of mid-latitudes between 30 and 50°N are redistributed, which induces perturbations in the zonal and meridional planetary wave trains from the tropics over the mid-latitudes into the Arctic. It is shown, that the improved parameterization of Arctic sea-ice and snow albedo can trigger changes in the Arctic and North Atlantic Oscillation pattern with strong implications for the European climate.

Originalsprog	Engelsk
Artikelnummer	L03703
Tidsskrift	Geophysical Research Letters
Vol/bind	33
Udgave nummer	3
ISSN	0094-8276
DOI	https://doi.org/10.1029/2005GL025245
Status	Udgivet - 16 feb. 2006

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title = "A dynamical link between the Arctic and the global climate system",

abstract = "By means of simulations with a global coupled AOGCM it is shown that changes in the polar energy sink region can exert a strong influence on the mid- and high-latitude climate by modulating the strength of the mid-latitude westerlies and storm tracks. It is found, that a more realistic sea-ice and snow albedo treatment changes the ice-albedo feedback and the radiative exchange between the atmosphere and the ocean-sea-ice system. The planetary wave energy fluxes in the middle troposphere of mid-latitudes between 30 and 50°N are redistributed, which induces perturbations in the zonal and meridional planetary wave trains from the tropics over the mid-latitudes into the Arctic. It is shown, that the improved parameterization of Arctic sea-ice and snow albedo can trigger changes in the Arctic and North Atlantic Oscillation pattern with strong implications for the European climate.",

author = "K. Dethloff and A. Rinke and A. Benkel and M. K{\o}ltzow and E. Sokolova and Saha, {S. Kumar} and D. Handorf and W. Dorn and B. Rockel and {von Storch}, H. and Haugen, {J. E.} and R{\o}ed, {L. P.} and E. Roeckner and Christensen, {J. H.} and M. Stendel",

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AU - Dethloff, K.

AU - Rinke, A.

AU - Benkel, A.

AU - Køltzow, M.

AU - Sokolova, E.

AU - Saha, S. Kumar

AU - Handorf, D.

AU - Dorn, W.

AU - Rockel, B.

AU - von Storch, H.

AU - Haugen, J. E.

AU - Røed, L. P.

AU - Roeckner, E.

AU - Christensen, J. H.

AU - Stendel, M.

PY - 2006/2/16

Y1 - 2006/2/16

N2 - By means of simulations with a global coupled AOGCM it is shown that changes in the polar energy sink region can exert a strong influence on the mid- and high-latitude climate by modulating the strength of the mid-latitude westerlies and storm tracks. It is found, that a more realistic sea-ice and snow albedo treatment changes the ice-albedo feedback and the radiative exchange between the atmosphere and the ocean-sea-ice system. The planetary wave energy fluxes in the middle troposphere of mid-latitudes between 30 and 50°N are redistributed, which induces perturbations in the zonal and meridional planetary wave trains from the tropics over the mid-latitudes into the Arctic. It is shown, that the improved parameterization of Arctic sea-ice and snow albedo can trigger changes in the Arctic and North Atlantic Oscillation pattern with strong implications for the European climate.

AB - By means of simulations with a global coupled AOGCM it is shown that changes in the polar energy sink region can exert a strong influence on the mid- and high-latitude climate by modulating the strength of the mid-latitude westerlies and storm tracks. It is found, that a more realistic sea-ice and snow albedo treatment changes the ice-albedo feedback and the radiative exchange between the atmosphere and the ocean-sea-ice system. The planetary wave energy fluxes in the middle troposphere of mid-latitudes between 30 and 50°N are redistributed, which induces perturbations in the zonal and meridional planetary wave trains from the tropics over the mid-latitudes into the Arctic. It is shown, that the improved parameterization of Arctic sea-ice and snow albedo can trigger changes in the Arctic and North Atlantic Oscillation pattern with strong implications for the European climate.

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DO - 10.1029/2005GL025245

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SN - 1944-8007

VL - 33

JO - Geophysical Research Letters (Online)

JF - Geophysical Research Letters (Online)

IS - 3

M1 - L03703

ER -

A dynamical link between the Arctic and the global climate system

Abstract

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