North Atlantic Oscillation - Effects On North Atlantic Sea Level

Effects On North Atlantic Sea Level

Under a positive NAO index (NAO+), regional reduction in atmospheric pressure results in a regional rise in sea level due to the 'inverse barometer effect'. This effect is important to both the interpretation of historic sea level records and predictions of future sea level trends, as mean pressure fluctuations of the order of milibars can lead to sea level fluctuations of the order of centimeters.

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