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Sensitivity of northern hemisphere surface climate to simulation of the stratospheric polar vortex
Author(s) -
Norton W. A.
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2003gl016958
Subject(s) - stratosphere , polar vortex , northern hemisphere , climatology , arctic oscillation , sudden stratospheric warming , environmental science , atmospheric sciences , gcm transcription factors , polar , north atlantic oscillation , arctic , climate model , the arctic , quasi biennial oscillation , climate change , geology , general circulation model , physics , oceanography , astronomy
A sensitivity experiment has been performed with a stratosphere‐resolving GCM where the mean state and variability of the stratosphere have been altered. It is shown that this has a significant effect on the mean and variability of wintertime northern hemisphere surface climate. In particular it is shown that the stratosphere strongly contributes to the persistence of the surface Arctic Oscillation at lags of 10–25 days. This confirms the importance of the stratosphere on surface climate that has been inferred by recent studies examining the Arctic Oscillation in reanalysis datasets.