Heidi M. Cullen

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The climate of the Atlantic sector exhibits considerable variability on a wide range of time scales. A substantial portion is associated with the North Atlantic Oscillation (NAO), a hemispheric meridional oscillation in atmospheric mass with centers of action near Iceland and over the subtropical Atlantic. NAO-related impacts on winter climate extend from(More)
Multi-proxy composite reconstructions of North Atlantic Oscillation (NAO) indices are presented spanning the last three centuries. These composite time series draw on four nearly independent reconstructions derived from di erent combinations of global and North Atlantic sector climate proxy data (e.g. tree rings, ice cores) as well as long instrumental(More)
Interannual to decadal variations in Middle Eastern temperature, precipitation and streamflow reflect the far-field influence of the North Atlantic Oscillation (NAO), a dominant mode of Atlantic sector climate variability. Using a new sea surface temperature (SST) based index of the NAO and available streamflow data from five Middle Eastern rivers, we show(More)
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