海面風(fēng)矢量對不同極化狀態(tài)海表面亮溫的遙感影響研究
發(fā)布時(shí)間：2019-05-11 05:48
【摘要】：本文從海面風(fēng)矢量與不同極化狀態(tài)下海表面亮溫參數(shù)的關(guān)系入手,利用2014年5月1日西北太平洋區(qū)域Windsat衛(wèi)星L2風(fēng)場數(shù)據(jù)和SMOS(Soil Moisture and Ocean Salinity)衛(wèi)星L1C數(shù)據(jù),定量分析了風(fēng)速和風(fēng)向?qū)α翜氐挠绊憽Ｑ芯拷Y(jié)果表明:海表面亮溫的變化,風(fēng)速大于風(fēng)向的影響;V極化狀態(tài)下垂直亮溫對風(fēng)速、風(fēng)向的敏感性最強(qiáng),Stokes2亮溫參數(shù)對風(fēng)速的敏感性最低,20°風(fēng)向變化對Stokes1亮溫參數(shù)敏感性最低;海面亮溫在3級風(fēng)速內(nèi)和0°~150°風(fēng)向區(qū)間受風(fēng)場影響變化較小,亮溫波動顯著區(qū)域主要集中在6級風(fēng)速以上和300°~360°風(fēng)向區(qū)間。
[Abstract]:In this paper, based on the relationship between sea surface wind vector and sea surface brightness temperature parameters under different polarization conditions, the L2 wind field data of Windsat satellite and L1C data of SMOS (Soil Moisture and Ocean Salinity) satellite in Northwest Pacific region on May 1, 2014 are used. The influence of wind speed and direction on brightness temperature is analyzed quantitatively. The results show that the influence of wind speed is greater than that of wind direction with the change of sea surface brightness temperature. Under the condition of V polarization, the sensitivity of vertical brightness temperature to wind speed and wind direction is the strongest, the sensitivity of Stokes2 brightness temperature parameters to wind speed is the lowest, and the sensitivity of 20 擄wind direction change to Stokes1 brightness temperature parameters is the lowest. The brightness temperature of the sea surface is less affected by the wind field in the wind direction range of 0 擄~ 150 擄and within the level 3 wind speed, and the significant fluctuation area of the brightness temperature is mainly concentrated above the wind speed of grade 6 and the wind direction range of 300 擄~ 360 擄.
【作者單位】： 上海海洋大學(xué)海洋科學(xué)學(xué)院;遠(yuǎn)洋漁業(yè)協(xié)同創(chuàng)新中心;國家海洋環(huán)境監(jiān)測中心;
【基金】：電磁波信息科學(xué)教育部重點(diǎn)實(shí)驗(yàn)室開放基金(EMW201501)
【分類號】：P715.7
本文編號：2474288
[Abstract]:In this paper, based on the relationship between sea surface wind vector and sea surface brightness temperature parameters under different polarization conditions, the L2 wind field data of Windsat satellite and L1C data of SMOS (Soil Moisture and Ocean Salinity) satellite in Northwest Pacific region on May 1, 2014 are used. The influence of wind speed and direction on brightness temperature is analyzed quantitatively. The results show that the influence of wind speed is greater than that of wind direction with the change of sea surface brightness temperature. Under the condition of V polarization, the sensitivity of vertical brightness temperature to wind speed and wind direction is the strongest, the sensitivity of Stokes2 brightness temperature parameters to wind speed is the lowest, and the sensitivity of 20 擄wind direction change to Stokes1 brightness temperature parameters is the lowest. The brightness temperature of the sea surface is less affected by the wind field in the wind direction range of 0 擄~ 150 擄and within the level 3 wind speed, and the significant fluctuation area of the brightness temperature is mainly concentrated above the wind speed of grade 6 and the wind direction range of 300 擄~ 360 擄.
【作者單位】： 上海海洋大學(xué)海洋科學(xué)學(xué)院;遠(yuǎn)洋漁業(yè)協(xié)同創(chuàng)新中心;國家海洋環(huán)境監(jiān)測中心;
【基金】：電磁波信息科學(xué)教育部重點(diǎn)實(shí)驗(yàn)室開放基金(EMW201501)
【分類號】：P715.7
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