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本文从海面风矢量与不同极化状态下海表面亮温参数的关系入手,利用2014年5月1日西北太平洋区域Windsat卫星L2风场数据和SMOS(Soil Moisture and Ocean Salinity)卫星L1C数据,定量分析了风速和风向对亮温的影响。研究结果表明:海表面亮温的变化,风速大于风向的影响;V极化状态下垂直亮温对风速、风向的敏感性最强,Stokes2亮温参数对风速的敏感性最低,20°风向变化对Stokes1亮温参数敏感性最低;海面亮温在3级风速内和0°~150°风向区间受风场影响变化较小,亮温波动显著区域主要集中在6级风速以上和300°~360°风向区间。
Based on the relationship between the sea surface wind vector and the sea surface brightness temperature under different polarization conditions, this paper makes use of the data of Windsat satellite L2 wind farm in the Northwest Pacific Ocean on May 1, 2014 and L1C data of the Soil Moisture and Ocean Salinity (SMOS) The impact of wind speed and direction on light temperature. The results show that the change of sea surface brightness temperature and the wind speed are greater than the wind direction. The vertical brightness temperature is the most sensitive to wind speed and wind direction under V polarization, the Stokes2 brightness temperature parameter is the least sensitive to wind speed, The sensitivity to the Stokes1 brightness temperature was the lowest. The sea surface brightness temperature was less affected by the wind field in the wind speed range of 3 and 0 ° -150 °. The significant areas of brightness and temperature fluctuation mainly concentrated above the 6th wind speed and 300 ° -360 ° Wind direction interval.