| 双波段大气向下红外辐射云遥感数值模拟 |
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| 引用本文： | 李浩,孙学金,陈峰,宋多.双波段大气向下红外辐射云遥感数值模拟[J].气象科技,2010,38(2):222-225. |
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| 作者姓名： | 李浩 孙学金 陈峰 宋多 |
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| 作者单位： | 1. 解放军理工大学气象学院,南京,211101
2. 解放军94906部队,苏州,215157 |
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| 摘 要： | 为了将卫星多通道遥感技术应用到地基测云红外遥感中,利用SBDART(平面平行辐射传输模式)模式对双波段(10.3～11.3μm,11.5～12.5μm)大气向下红外辐射进行计算。分析了双波段辐射亮温差的特点,讨论了不同能见度、不同天空状况对两通道亮温差的影响,同时将利用实际测量的亮温差值所判断出来的天空状况与实际天空状况进行了对比。结果表明,在能见度较好时天顶方向辐射率变化比天边方向明显;在高能见度时一定天顶角范围内,可以利用不同天空状况亮温差不同的特点对云进行识别。
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| 关 键 词： | SBDART 双波段 红外辐射 云识别 |
| 收稿时间： | 2009/1/14 0:00:00 |
| 修稿时间： | 5/4/2009 12:00:00 AM |
Numerical Simulation of Double-Band Cloud Remote Sensing Based on Atmospheric Downward Infrared Radiation |
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| Li Hao,Sun Xuejin,Chen Feng and Song Duo.Numerical Simulation of Double-Band Cloud Remote Sensing Based on Atmospheric Downward Infrared Radiation[J].Meteorological Science and Technology,2010,38(2):222-225. |
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| Authors: | Li Hao Sun Xuejin Chen Feng and Song Duo |
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| Institution: | Li Hao1 Sun Xuejin1 Chen Feng1 Song Duo2(1 Institute of Meteorology,PLA University of Science & Technology,Nanjing 211101,2 PLA Unit 94906,Suzhou 215157) |
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| Abstract: | To apply multi-channel remote sensing technology to cloud remote sensing based on ground-based infrared sensors,the SBDART model is used to calculate the atmospheric downward infrared radiation of double bands（10.3 to 11.3 μm,11.5 to 12.5 μm）,from which the characteristics of the brightness temperature difference are analyzed and the influences of the different visibilities and sky statuses on brightness temperature difference are discussed.The simulation results are compared with that in the real sky status.It is shown that in the perfect visibility situation,the change of the radiance at the zenith is more evident than that at the horizon,and the different characteristics of the brightness temperature difference in the different sky statuses can be adopted to identify clouds under higher visibility within a certain range of zenith angle. |
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| Keywords: | SBDART |
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