| 摘要: |
| 利用TOPEX高度计风速资料,实现了对太平洋海面粗糙度 (z0)的计算。1997～1999年正是厄尔尼诺与拉尼娜事件发生时期,作者研究了1997～1999年z0在ENSO期间的变化后发现:(1)EI Nion发生期间赤道附近z0最大值在A,C,B 3个站点上移动;最小值在B,A 2个站点上移动。(2)Li Nina发生期间赤道附近z0最小值在A站点,最大值主要在B站点上。Li Nina发生期间,1999年15个站点z0均大于正常年份和EI Nion发生期间的15个站点z0。(3)ENSO期间,四季z0与正常年份相比都有显著改变。 |
| 关键词: ENSO 厄尔尼诺 拉尼娜 海面粗糙度(z0) 海面风速 高度计 |
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| Calculation and ahanging of roughness of sea surface in Pacific Ocean in ENSO period |
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| Abstract: |
| We calculated values of roughness in 15 points using wind speed by TOPEX satellite Altimeter. We studied the changes of roughness during 1997～1999 (ENSO period) and compared them with roughness in 1996. We find some characteristics as follows: The largest roughness nearby equator is moving from station A to station C to station B and the smallest roughness is moving from station B to station A during the EI Nion period. The smallest roughness is in station A and the largest roughness is in station B during LI Nina period. The roughness of 15 stations in 1999 is bigger than those in 1996, 1997, 1998. The roughness of 4 seasons has prominent change during ENSO period when compared with 1996. |
| Key words: ENSO EI Nion La Nina the roughness of the sea surface sea surface wind speed satellite altimeter |
