摘要
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。
From the relationship between the surface wind vector and the sea surface brightness temperature parameters at difference polarizations,the influence of the windfield on the brightness temperature was quantitatively analyzed using the Windsat satellite L2 wind field data and the L1 C satellite SMOS data in the Northwest Pacific region of China on May 1,2014.The results indicate that the wind speed has greater influence on the sea surface brightness temperature than the wind direction; the sensitivity of wind field is the most conspicuous in the vertical brightness temperature,and the Stokes2 brightness temperature parameter has the lowest sensitivity to the wind speed,meanwhile the Stokes1 brightness temperature parameter has the lowest sensitivity to the wind direction under 20 degrees; the best correlation between sea surface brightness temperature and wind field is under 3 level wind speed and 0 ~ 150 degree wind direction; the significant brightness temperature fluctuation mainly happen over 6 level wind speed and 300 ~360 degree wind directions.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2016年第6期853-860,共8页
Marine Environmental Science
基金
电磁波信息科学教育部重点实验室开放基金(EMW201501)
