Gerding, M, Daly, S orcid.org/0000-0001-7957-4514 and Plane, J orcid.org/0000-0003-3648-6893 (2019) Lidar soundings of the mesospheric nickel layer using Ni(³F) and NI(³D) transitions. Geophysical Research Letters, 46 (1). pp. 408-415. ISSN 0094-8276
Abstract
During six nights between January and March 2018 we observed the mesospheric Ni layer by lidar from Kühlungsborn, Germany (54°N, 12°E). For most of the soundings we utilized for the first time a transition from the low‐lying excited NI(³D) state at 341 nm. For additional soundings we used the ground‐state Ni(³F) transition at 337 nm, giving similar results but a worse signal‐to‐noise ratio. We observed nightly mean Ni peak densities between ∼280 and 450 cm‾³ and column abundances between 3.1·108 and 4.9·108 cm‾². Comparing with iron densities we get a Fe/Ni ratio of 38, which is a factor of 2 larger than the ratio in CI chondrites and factor of 32 larger than the Fe/Ni ratio observed by the only previous measurement of mesospheric Ni (Collins et al., 2015, https://doi.org/10.1002/2014GL062716). The underabundance of Ni compared to CI chondrites suggests that Ni is more efficiently sequestered as Ni+ or neutral reservoir species than Fe.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2018. American Geophysical Union. All Rights Reserved. This is an author produced version of a paper published in Geophysical Research Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | nickel; lidar |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Physical Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jan 2019 12:45 |
Last Modified: | 08 Feb 2019 22:38 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1029/2018GL080701 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140655 |