| 基于模拟红外辐射的海雾监测应用研究 |
| 投稿时间：2018-06-27 修订日期：2018-07-07 点此下载全文 |
| 引用本文：顾成明,陈成.基于模拟红外辐射的海雾监测应用研究[J].红外,2018,39(9):27~33 |
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| 中文摘要:由于长波红外及中波红外辐射受雾滴中水汽的影响明显，结合大气红外探测仪(Atmospheric Infrared Sounder, AIRS)的特征，利用快速辐射传输模式(Community Radiative Transfer Model, CRTM)分别模拟了两个波段的通道辐射信息。对下垫面辐射和模式上行辐射进行分析后发现：(1)为排除下垫面的干扰，将CRTM模式的底层上行辐射减去下垫面辐射，此时分离出的贴地面辐射值大小与海雾的强弱分布一致，因此可用于对海雾水平分布的监测。(2）模式上行辐射及其梯度随高度的变化反映了垂直方向上的海雾强度变化；通过对其进行分析可实现对海雾垂直结构的监测。(3）分别对中波红外和长波红外通道辐射进行模拟分析后发现，两者均可反映海雾的三维空间特性。 |
| 中文关键词:海雾 模拟 监测 水平分布 垂直结构 |
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| Research on Sea Fog Monitoring Based on Simulated Infrared Radiation |
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| Abstract:Because of the obvious affection of moisture from fog drops on long wave and middle wave infrared radiation, the channel radiation information in both bands is simulated respectively by using a Community Radiative Transfer Model (CRTM) according to the characteristics of the Atmospheric Infrared Sounder (AIRS). After analyzing the underlying surface radiation and upwelling radiation from the model, it is found that 1) to exclude the distraction from the underlying surface, the underlying surface radiation can be subtracted from the bottom layer radiation in CRTM. At this time, the ground layer radiation presents the same distribution as the sea fog. Therefore, this method can be used to monitor the horizontal distribution of sea fog; 2) the upwelling radiation and its gradient variation with altitude can reflect the intensity variation of sea fog in the vertical direction, which can be used to monitor the vertical structure of sea fog; 3) After analyzing the simulated radiation in long wave and middle wave infrared bands, it is found that the channel radiation in both infrared bands can mirror the 3D spatial characteristics of sea fog. |
| keywords:sea fog simulate monitor horizontal distribution vertical structure |
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