Diurnal variability in sea surface temperature in the Arctic |
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Authors: | Steinar Eastwood Pierre Le Borgne David Poulter |
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Affiliation: | a Norwegian Meteorological Institute, Oslo, Norwayb Centre de Météorologie Spatiale, Météo-France, Lannion, Francec National Oceanography Centre, Southampton, United Kingdom |
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Abstract: | The formation of diurnal warming events in sea surface temperature (SST) observations in the Arctic is investigated using multiple satellite derived SST products and in situ buoy temperature measurements. Significant diurnal warming events (of the order of several K) are shown to occur even in the Arctic during summer months, when the total daily insolation at high latitudes is, in fact, higher than that at low and mid latitudes. The observed Arctic diurnal warming events are shown to usually happen in persistent low wind conditions, and are more frequent in shallow waters than deep waters. During the studied period of June and July 2008, significant diurnal warming events were observed over most of the studied area, although with smaller spatial extent and reoccurring less often when compared to events reported at low and mid latitudes. |
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Keywords: | Sea surface temperature Diurnal warming Arctic |
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