| DOI: | 10.1002/2014GL062716
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| 论文题名: | First lidar observation of the mesospheric nickel layer |
| 作者: | Collins R.L.; Li J.; Martus C.M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9020
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| EISSN: | 1944-8751
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| 出版年: | 2015
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| 卷: | 42, 期:2 | | 起始页码: | 665
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| 结束页码: | 671
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| 语种: | 英语
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| 英文关键词: | lidar
; mesosphere
; meteors
; nickel
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| Scopus关键词: | Ionosphere
; Meteorites
; Optical radar
; Upper atmosphere
; Chondrite meteorites
; Column abundance
; Lidar observation
; mesosphere
; meteors
; Nickel layers
; Peak concentrations
; Root Mean Square
; Nickel
; absorption
; abundance
; chondrite
; concentration (composition)
; lidar
; mesosphere
; meteorite
; nickel
; Alaska
; United States
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| 英文摘要: | Ground-based resonance lidar has been used to detect the mesospheric nickel (Ni) layer. The Ni layer is detected through absorption in the 3d8(3F)4s2→3d9(2D)4p transition at 337.1nm and reemission in both the 3d9(2D)4p→3d8(3F)4s2 and 3d9(2D)4p→3d9(2D)4s transitions at 337.1 and 339.4nm, respectively. Results from wintertime lidar observations on two nights (27-28 November and 20-21 December 2012) at Chatanika, Alaska (65°N, 147°W), are presented. The wintertime Ni layer has a peak concentration of 1.6×104cm-3 at 87km, with a column abundance of 2.7×1010cm-2, centroid height of 88km, and root-mean-square width of 6.4km. The midwinter abundance of mesospheric iron (Fe) at Chatanika is 3.4×1010cm-2, indicating a ratio of Fe to Ni of 1.2 in the upper atmosphere. This is significantly lower than the value of 18 for the ratio of Fe to Ni in chondrite meteorites. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923377400&doi=10.1002%2f2014GL062716&partnerID=40&md5=b19fe7417a75a02f89a79d6a6b164df2
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8636
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Geophysical Institute and Department of Atmospheric Sciences, University of Alaska Fairbanks, Fairbanks, AL, United States
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| Recommended Citation: | |
Collins R.L.,Li J.,Martus C.M.. First lidar observation of the mesospheric nickel layer[J]. Geophysical Research Letters,2015-01-01,42(2).
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