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遥感技术与应用  2018, Vol. 33 Issue (2): 331-336    DOI: 10.11873/j.issn.1004-0323.2018.2.0331
遥感应用     
不同季节海面风矢量对海表面亮温增益的影响研究
张宜振1,韩震1,2,朱情逸3,王艺晴1,胡旭冉1
(1.上海海洋大学 海洋科学学院,上海  201306;
2.上海市海洋局 河口海洋测绘工程技术研究中心,上海  201306;
3.浙江省海宁市气象局,浙江 海宁  314400)
Influence of Sea Surface Wind Vector on Sea SurfaceBrightness Temperature Gain in Different Seasons
Zhang Yizhen1,Han Zhen1,2,Zhu Qingyi1,Wang Yiqing1,Hu Xuran1
(1.College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China; 
2.Engineering Research Center on Estuarine and Oceanographic Mapping,Shanghai Municipal Ocean Bureau,Shanghai 201306,China;
3.Meteorological Bureau of Haining City,Zhejiang,Haining 314400,China)
 全文: PDF(8668 KB)  
摘要:
从不同季节海面风矢量对海表面粗糙度亮温的相关性进行研究,选取2012至2016年西北太平洋区域1、4、7、10月Windsat L2级U10风场数据,利用海面粗糙度半经验半理论算法分析了风速引起的亮温增益与不同季节下风矢量的相关性。研究结果表明:风速对水平亮温增益贡献的影响明显大于垂直亮温;风速引起的水平亮温增益变化在1月份最为显著,7月份影响最小;风速对垂直亮温增益最大和最小均值分别为0.19 k和0.05 k,说明风速对垂直亮温增益量影响较小,通过标准差计算可知风速引起的垂直亮温增益几乎不受季节影响;4月和10月在高纬度区域受太平洋低压和夏威夷高压影响下形成较大范围的气旋现象,并伴随亮温增益变化,表现出较为明显的北太平洋暖流特征。
关键词: Windsat亮温增益风矢量季节    
Abstract: Based on the correlation of the sea surface wind vectors to the sea surface roughness temperature in different seasons,wind field data of the Windsat L2 U10 wind fields in the northwest Pacific in January,April,July and October from 2012 to 2016 were selected,and used sea surface roughness Semi\|empirical and theoretical algorithm,the relationship between the brightness temperature gain caused by wind speed and wind vector under different seasons was analyzed.the results showed that the contribution of wind speed to horizontal brightness temperature gain was greater than that of vertical brightness temperature; the change of horizontal brightness temperature gain was the most significant in January and the least was in July; the maximum and minimum mean values of wind speed to vertical brightness gain were 0.19 K and 0.05 K respectively,indicating that the wind speed had little effect on the vertical brightness gain.It showed that the vertical brightness temperature gain was almost independent of the seasons by the standard deviation calculation; in April and October to form larger cyclone phenomenon in high latitude regions by the Pacific and Hawaii high pressure under the influence,and with brightness gain changes,showing obvious features of the North Pacific gyre.
Key words: Windsat    Brightness temperature gain    Wind vector    Season
收稿日期: 2017-06-04 出版日期: 2018-05-15
:  TP 79  
基金资助: 电磁波信息科学教育部重点实验室开放基金(EMW201501)。
作者简介: 张宜振(1990-),男,江苏徐州人,硕士研究生,主要从事海洋遥感研究。Email:z54886141@qq.com。
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引用本文:

张宜振,韩震,朱情逸,王艺晴,胡旭冉. 不同季节海面风矢量对海表面亮温增益的影响研究[J]. 遥感技术与应用, 2018, 33(2): 331-336.

Zhang Yizhen,Han Zhen,Zhu Qingyi,Wang Yiqing,Hu Xuran. Influence of Sea Surface Wind Vector on Sea SurfaceBrightness Temperature Gain in Different Seasons. Remote Sensing Technology and Application, 2018, 33(2): 331-336.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2018.2.0331        http://www.rsta.ac.cn/CN/Y2018/V33/I2/331

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