INGULAR CROSS SPECTRUM APPLIED ON DIAGNOSTIC ANALTSIS OF AIR-SEA INTERACTION |
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Authors: | ZHU Yan-feng DING Yu-guo and HE Jin-hai |
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Affiliation: | Nanjing Institute of Meteorologr, Naming 210044 China;Nanjing Institute of Meteorologr, Naming 210044 China;Nanjing Institute of Meteorologr, Naming 210044 China |
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Abstract: | The Singular Cross Spectrum Analysis(SCSA) method was employed to investigate the coupled-periods of air-sea/mid-low circulation interaction using 1951-1993 500-hpa geopotential heights and the sea surface temperature(SST)in the Northern Hemisphere. Results show that air-sea correlation is noticeable on the 3-7 year scale which is similar to ENSO circle. In this sense, ENSO is a Strong signal. Quasi-ten/quasi-four year periods are prominent in the mid-low interaction, and quasi-if our year oscillation is uniform with the ENSO circle.Studies indicate that the mid-low interaction possess quasi-ten year oscillation beside being affected by ENSO. |
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Keywords: | cross singular spectrum air-sea interaction quasi-ten-year oscillation ENSO |
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