Premonitory phenomenon of EI Niño event reflected in the observations ofLOD and sea level |
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Authors: | Dawei Zheng Xiaoli Ding Yonghong Zhou Yongqi Chen Zhilin Li Xinhao Liao |
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Institution: | (1) Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030 Shanghai, China;(2) Center of National Astronomical Observation, Chinese Academy of Sciences, 100012 Beijing, China;(3) Department of Land Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China |
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Abstract: | Data sets of the changes of the length of day, the sea surface temperature in the eastern Pacific and of the sea level in Hong Long from tide gauge observations are used to analyze and reveal the reflections in the observations of the length of day and the sea level changes concerned with the premonitory phenomenon of next EI Niño event. The results from this study indicate that a new EI Niño event has been brewing with the ending of the strong La Niño event that started in early summer of 1998. The estimated formation period of the new EI Niño event will begin before the end of 2000, and the peak period may be reached at around the end of 2001. |
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Keywords: | change of the length of day sea level change El Nino event |
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