| INTERANNUAL VARIATION OF EARTH ROTATION,El Nio EVENTS AND ATMOSPHERIC ANGULAR MOMENTUM |
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| 作者姓名： | 郑大伟 罗时芳 宋国玄 |
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| 作者单位： | Shanghai Observatory，Academia Sinica，Shanghai Observatory，Academia Sinica，Shanghai Observatory，Academia Sinica |
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| 摘 要： | In this paper the multi-stage digit filter is used to analyse the data of Earth rotation represented by the length of day, ΔLOD. The results show that the interannual variations of Earth rotation, which are in the time scale of several years but not quasi-periodic terms, exist in the long periodic fluctuations. They induce the relative variation in the length of day of 0.3×10~(-8).Comparing the series of length of day with the data of temperature departure of the sea surface in the equatorial area of the eastern Pacific, we found that the deceleration and acceleration of the interannual rate of Earth rotation are consistent with the warming up and down of sea temperature in the equatorial area very well. This means that every El Nio event always occurs after the turning of acceleration of the interannual rate of Earth rotation to deceleration.According to the strong interannual variation in the length of day and strong warming of the sea surface temperature in the equatorial area between 1982 and 1983
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INTERANNUAL VARIATION OF EARTH ROTATION,El Nio EVENTS AND ATMOSPHERIC ANGULAR MOMENTUM |
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| ZHENG DA-WEI LUO SHI-FANG AND SONG GUO-XUAN.INTERANNUAL VARIATION OF EARTH ROTATION,El Nio EVENTS AND ATMOSPHERIC ANGULAR MOMENTUM[J].Science in China(Chemistry),1989(6). |
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| Authors: | ZHENG DA-WEI LUO SHI-FANG AND SONG GUO-XUAN |
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| Abstract: | |
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| Keywords: | Earth rotation length of day (LOD) El Nio atmospheric angular momentum (AAM) |
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