| 应用FY-1D气象卫星监测雾 |
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| 引用本文： | 梁益同,张家国,刘可群,黄靖.应用FY-1D气象卫星监测雾[J].气象,2007,33(10):68-72. |
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| 作者姓名： | 梁益同 张家国 刘可群 黄靖 |
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| 作者单位： | 武汉区域气候中心,430074;武汉中心气象台 |
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| 摘 要： | 简要介绍了FY-1D气象卫星的特点。利用典型的FY-1D资料,通过直方图分析法,探讨了雾在FY-1D不同通道的光谱特征。分析结果表明,可见光通道1和红外通道4是FY-1D卫星监测雾的代表通道。通道1图像上,雾的反照率在20%～48%之间,且纹理均匀,顶部光滑,边缘清晰,而通道4图像上,雾的亮温在272～289K之间,与地表温差不超过6K。
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| 关 键 词： | 雾 FY-1D气象卫星 光谱特征 |
| 收稿时间： | 2007/2/12 0:00:00 |
| 修稿时间： | 2007-02-12 |
Application of FY-1D Meteorological Satellite to Monitoring of Fog |
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| Liang Yitong,Zhang Jiaguo,Liu Kequn and Huang Jing.Application of FY-1D Meteorological Satellite to Monitoring of Fog[J].Meteorological Monthly,2007,33(10):68-72. |
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| Authors: | Liang Yitong Zhang Jiaguo Liu Kequn and Huang Jing |
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| Institution: | 1. Wuhan Regional Climate Center, Wuhan 430074; 2. Wuhan Central Meteorotogical Observatory |
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| Abstract: | The characteristics of FY-1D meteorological satellite are briefly introduced. Based on the typical case of FY-1D data, the spectral characteristics of fog in the different channels of FY- 1D are analyzed by using the histogram analysis method. The results indicate that the channel 1 and 4 are the representative channels of FY-1D for the identification of fog. In the channel 1, fog is with uniform texture, smooth top, and clear-cut boundary, and its albedo is about 20% 48 %. In the channel 4, the brightness temperature of fog is 272-289K, and the difference value between the fog and the ground surface is no more than 6K. |
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| Keywords: | fog FY-1D meteorological satellite spectrum characteristics |
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