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 for this work

Research output: Contribution to journal › Journal article › Research › peer-review

74 Citations (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.

Original language	English
Article number	L03703
Journal	Geophysical Research Letters
Volume	33
Issue number	3
ISSN	0094-8276
DOIs	https://doi.org/10.1029/2005GL025245
Publication status	Published - 16 Feb 2006

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10.1029/2005GL025245

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A dynamical link between the Arctic and the global climate system. / Dethloff, K.; Rinke, A.; Benkel, A.; Køltzow, M.; Sokolova, E.; Saha, S. Kumar; Handorf, D.; Dorn, W.; Rockel, B.; von Storch, H.; Haugen, J. E.; Røed, L. P.; Roeckner, E.; Christensen, J. H.; Stendel, M.

In: Geophysical Research Letters, Vol. 33, No. 3, L03703, 16.02.2006.

Research output: Contribution to journal › Journal article › Research › peer-review

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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.",

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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.

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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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A dynamical link between the Arctic and the global climate system

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