Air flow influences on local climate: observed United Kingdom climate variations

Air flow influences on local climate: observed United Kingdom climate variations Identifying and removing the influence of atmospheric circulation variability on central England temperature increases the statistical significance of warming trends in spring, autumn and the annual mean over the last 50 years. The trends are more detectable because the circulation changes contribute greatly to the ‘noise’ of interannual to interdecadal variability, but induce only small multi‐decadal trends (the ‘signal’). Factoring out the circulation can thus enhance the signal‐to‐noise ratio. For precipitation, the recent enhancement in the difference between summer rainfall in south‐east England and winter precipitation in northern Scotland can partly be explained by atmospheric circulation variability over the past 40 years (particularly the increase in the North Atlantic Oscillation index from the 1960s to the early 1990s). Copyright © 2000 Royal Meteorological Society. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Atmospheric Science Letters Wiley

Air flow influences on local climate: observed United Kingdom climate variations

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Publisher
Wiley
Copyright
Copyright © 2000 Royal Meteorological Society
ISSN
1530-261X
eISSN
1530-261X
D.O.I.
10.1006/asle.2000.0013
Publisher site
See Article on Publisher Site

Abstract

Identifying and removing the influence of atmospheric circulation variability on central England temperature increases the statistical significance of warming trends in spring, autumn and the annual mean over the last 50 years. The trends are more detectable because the circulation changes contribute greatly to the ‘noise’ of interannual to interdecadal variability, but induce only small multi‐decadal trends (the ‘signal’). Factoring out the circulation can thus enhance the signal‐to‐noise ratio. For precipitation, the recent enhancement in the difference between summer rainfall in south‐east England and winter precipitation in northern Scotland can partly be explained by atmospheric circulation variability over the past 40 years (particularly the increase in the North Atlantic Oscillation index from the 1960s to the early 1990s). Copyright © 2000 Royal Meteorological Society.

Journal

Atmospheric Science LettersWiley

Published: Jan 1, 2000

References

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