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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Deep Space Observations of Sun Glints from Marine Ice Clouds
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Deep Space Observations of Sun Glints from Marine Ice Clouds

机译：来自海洋冰云的太阳闪耀的深空观察

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The Earth Polychromatic Camera (EPIC) onboard the Deep Space Climate Observatory (DSCOVR) spacecraft takes images of the sunlit face of the earth from a million miles away. Earlier work showed that EPIC detected the specular reflection of sunlight (i.e., sun glint) from ice crystals floating in cold clouds over land; here we show that this phenomenon can also be detected over oceans. Furthermore, the results show that-using its observations at oxygen A-band absorption bands-EPIC can distinguish glints off marine ice clouds from those off the ocean surface. The analysis of more than two years of EPIC data reveals that the two kinds of glints are detected with comparable frequency. Glints off clouds are shown to be generally brighter but smaller in spatial extent. It is also demonstrated that glints off ice clouds have a discernible effect on the regional mean reflectance and that EPIC observations can help constrain the radiative contribution of oriented ice crystals.
机译：地球多色相机（史诗）船上深度空间气候观测所（DSCOVR）宇宙飞船从一百万英里远离地球的阳光照射的图像。早些时候的工作表明，史诗检测到阳光（即，太阳闪烁）的镜面反射从陆地漂浮在寒冷的云层中的冰晶;在这里，我们表明这种现象也可以在海洋上检测到。此外，结果表明，在氧气A带吸收带史诗中使用其观察可以将云雾从海洋表面上的那些区分开海洋冰云。两年多的史诗数据的分析表明，以可比频率检测到两种闪光。云云的闪烁显示在空间范围内通常更明亮但更小。还证明了冰云的闪烁对区域平均反射率具有可辨别的影响，并且史诗观测可以帮助限制定向冰晶的辐射贡献。

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