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Temporal Scale of Sea Surface Temperature Fronts Revealed by Microwave Observations

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5 Author(s)
Hosoda, K. ; Center for Atmos. & Oceanic Studies, Tohoku Univ., Sendai, Japan ; Kawamura, H. ; Kuo-Wei Lan ; Shimada, T.
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Sea surface temperature (SST) data for three years from the Advanced Microwave Scanning Radiometer for the Earth Observing System are used to statistically evaluate the temporal scales of the global SST fronts (SSTFs). Using the entropy-based edge detection method which is very resistant to impulsive noises, temporal autocorrelation of the dissimilarities of two SST groups across the SSTF is calculated in 10-km-gridded map. In general, the derived temporal scales, defined as e-folding scales in this study, range from 10 to 40 days. Long temporal scales of up to 100 days are found in areas where the stationary ocean currents maintain the frontal structures.

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Geoscience and Remote Sensing Letters, IEEE  (Volume:9 ,  Issue: 1 )