Climate dynamics

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The impact of stratospheric resolution on the detectability of climate change signals in the free atmosphere

GEOPHYSICAL RESEARCH LETTERS 40:5 (2013) 937-942

Authors:

DM Mitchell, PA Stott, LJ Gray, MR Allen, FC Lott, N Butchart, SC Hardiman, SM Osprey
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The influence of the quasi-biennial oscillation on the stratospheric polar vortices

(2013)

Variability of the North Atlantic summer storm track: mechanisms and impacts on European climate

ENVIRONMENTAL RESEARCH LETTERS 8:3 (2013) ARTN 034037

Authors:

Buwen Dong, Rowan T Sutton, Tim Woollings, Kevin Hodges
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Wave-Breaking Characteristics of Northern Hemisphere Winter Blocking: A Two-Dimensional Approach

JOURNAL OF CLIMATE 26:13 (2013) 4535-4549

Authors:

Giacomo Masato, Brian J Hoskins, Tim Woollings
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On the role of the ocean in projected atmospheric stability changes in the Atlantic polar low region

Geophysical Research Letters 39:24 (2012)

Authors:

T Woollings, B Harvey, M Zahn, L Shaffrey

Abstract:

The occurrence of destructive mesoscale 'polar low' cyclones in the subpolar North Atlantic is projected to decline under anthropogenic change, due to an increase in atmospheric static stability. This letter reports on the role of changes in ocean circulation in shaping the atmospheric stability. In particular, the Atlantic Meridional Overturning Circulation (AMOC) is projected to weaken in response to anthropogenic forcing, leading to a local minimum in warming in this region. The reduced warming is restricted to the lower troposphere, hence contributing to the increase in static stability. Linear correlation analysis of the CMIP3 climate model ensemble suggests that around half of the model uncertainty in the projected stability response arises from the varied response of the AMOC between models. © 2012. American Geophysical Union. All Rights Reserved.
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