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Interannual Variability of SST,SLA and Wind Waves in the Hawaii Area and Their Responses to ENSO

Journal of Ocean University of China 2008年第4期7卷 379-384页

作者： CHENG Yongcun XU Qing LIU Yuguang LI Chongyin rong zengzui ZONG Haibo XIU Peng YIN Xiaobin Institute of Meteorolog.v PLA University of Science and Technology Nanjing 211101 P. R. China Institute of Space and Earth Information Science The Chinese University of Hong Kong Hong Kong P. R. China Physical Oceanography Laboratonry Ocean University of China Qingdao 266100 P R. China LASG Institute of Atmospheric Physics Chinese Academy of Seiences Beijig 100029 P R. China School of Marine Science UniversiO of Maine Maine 04469 USA National Microwave Remote Sensing Laboratory Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 P R. China

Time series of sea surface temperature （SST）, wind speed and significant wave height （SWH） from meteorological buoys of the National Data Buoy Center （NDBC） are useful for studying the interannual variability and trend of these quantities at the buoy areas. The measurements from 4 buoys （B51001, B51002, B51003 and B51004） in the Hawaii area are used to study the responses of the quantities to El Nino and Southern Oscillation （ENSO）. Long-term averages of these data reflect precise seasonal and climatological characteristics of SST, wind speed and SWH around the Hawaii area. Buoy observations from B51001 suggest a significant warming trend which is, however, not very clear from the other three buoys. Compared with the variability of SST and SWH, the wind speeds from the buoy observations show an increasing trend. The impacts of EI Nifio on SST and wind waves are also shown. Sea level data observed by altimeter during October 1992 to September 2006 are analyzed to investigate the variability of sea level in the Hawaii area. The results also show an increasing trend in sea level anomaly （SLA）. The low-passed SLA in the Hawaii area is consistent with the inverse phase of the low-passed SOI （Southern Oscillation Index）. Compared with the low-passed SOl and PDO （Pacific Decadal Oscillation）, the low-passed PNA （Pacific-North America Index） has a better correlation with the low-passed SEA in the Hawaii area.

关键词： sea surface temperature wind waves ENSO: sea level anomaly

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