Calculation and ahanging of roughness of sea surface in Pacific Ocean in ENSO period
太平洋海面粗糙度的计算及在ENSO期间的变化

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.