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DOI | 10.1002/2017GL073248 |
Terrestrial glint seen from deep space: Oriented ice crystals detected from the Lagrangian point | |
Marshak, Alexander1; Varnai, Tamas1,2; Kostinski, Alexander3 | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Deep Space Climate Observatory (DSCOVR) spacecraft resides at the first Lagrangian point about one million miles from Earth. A polychromatic imaging camera onboard delivers nearly hourly observations of the entire sunlit face of the Earth. Many images contain unexpected bright flashes of light over both ocean and land. We construct a yearlong time series of flash latitudes, scattering angles, and oxygen absorption to demonstrate conclusively that the flashes over land are specular reflections off tiny ice platelets floating in the air nearly horizontally. Such deep space detection of tropospheric ice can be used to constrain the likelihood of oriented crystals and their contribution to Earth albedo. These glint observations also support proposals for detecting starlight glints off faint companions in our search for habitable exoplanets. Plain Language Summary The Deep Space Climate Observatory (DSCOVR) spacecraft resides at the first Lagrangian point about one million miles from Earth. An imaging camera onboard delivers nearly hourly observations of the entire sunlit face of the Earth. Many images contain unexpected bright flashes of light over both ocean and land. We construct a yearlong time series of flash latitudes, scattering angles, and oxygen absorption to demonstrate conclusively that the flashes over land are specular reflections off tiny ice platelets floating in the air nearly horizontally. Such deep space detection of tropospheric ice can be used to constrain the likelihood of oriented crystals and their contribution to Earth albedo. These glint observations also support proposals for detecting starlight glints off faint companions in our search for habitable exoplanets. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900096 |
WOS关键词 | CIRRUS CLOUDS ; RADIATIVE PROPERTIES ; PART II ; SCATTERING ; OCEANS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26283 |
专题 | 气候变化 |
作者单位 | 1.NASA, Goddard Space Flight Ctr, Code 661, Greenbelt, MD 20771 USA; 2.Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21228 USA; 3.Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA |
推荐引用方式 GB/T 7714 | Marshak, Alexander,Varnai, Tamas,Kostinski, Alexander. Terrestrial glint seen from deep space: Oriented ice crystals detected from the Lagrangian point[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Marshak, Alexander,Varnai, Tamas,&Kostinski, Alexander.(2017).Terrestrial glint seen from deep space: Oriented ice crystals detected from the Lagrangian point.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Marshak, Alexander,et al."Terrestrial glint seen from deep space: Oriented ice crystals detected from the Lagrangian point".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
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