| 利用MODIS云检测产品客观确定AIRS云检测 |
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| 引用本文： | 卢姁,严卫,何锡玉.利用MODIS云检测产品客观确定AIRS云检测[J].气象科技,2007,35(5):740-743. |
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| 作者姓名： | 卢姁 严卫 何锡玉 |
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| 作者单位： | 1. 解放军理工大学气象学院,南京,211101
2. 河北省秦皇岛市91876部队,秦皇岛,066203 |
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| 摘 要： | 云检测是用卫星资料研究云对气候系统作用至关重要的第一步,采用Nagle的基于扫描几何特性的共同空间匹配算法,用MODIS云检测产品客观确定了AIRS云检测,是将高空间分辨率成像仪产品与高光谱分辨率传感器观测资料结合使用的一次实际应用。合成使用高空间分辨率成像仪与高光谱分辨率传感器观测资料的关键步骤在于:①有效而精确的时间和空间上的匹配;②传感器像素内图像仪云检测产品的断定。不仅是云检测,利用AIRS视场内空间匹配的MODIS云产品,还可以判断AIRS的云相态、有效云量及云光学厚度等。
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| 关 键 词： | 空间匹配 云检测 |
| 收稿时间： | 2006/7/10 0:00:00 |
| 修稿时间： | 2006-07-102006-10-24 |
Objective Identification of AIRS Cloud Mask with MODIS Cloud Products |
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| Lu Xu,Yan Wei and He Xiyu.Objective Identification of AIRS Cloud Mask with MODIS Cloud Products[J].Meteorological Science and Technology,2007,35(5):740-743. |
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| Authors: | Lu Xu Yan Wei and He Xiyu |
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| Affiliation: | 1 Meteorology Institute, PLA University of Science and Technology, Nanjing 211101; 2 No. 91876 Troop of PLA, Hebei Province, Qinghuangdao 066203 |
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| Abstract: | Cloud mask is the most important step in studying the effect of clouds on the climate system with satellite data.In order to identify AIRS cloud mask with MODIS cloud mask products objectively,the Nagle's common space matching algorithm is adopted on the basis of scanning geometric characteristics.It is a practical application to combine high-spatial resolution products with high-spectral resolution detecting images.The key steps for synergistic use of imager and sounder radiance measurements are the collocation in space and time and the determination of the cloud mask products within the sensor's pixel.With the combined MODIS-AIRS data,the determination can be made of not only AIRS cloud mask, but also cloud phase,effective cloud amount,cloud optical thickness,etc. |
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| Keywords: | MODIS AIRS |
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