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Search for Extraterrestrial Origin of Atmospheric Trace Molecules — Radio Sub-MM Observations during the Leonids

Despois, Didier and Ricaud, Philippe and Lautié, Nicolas and Schneider, Nicola and Jacq, Thierry and Biver, Nicolas and Lis, Dariusz C. and Chamberlin, Richard A. and Phillips, Thomas G. and Miller, Martin and Jenniskens, Peter (1998) Search for Extraterrestrial Origin of Atmospheric Trace Molecules — Radio Sub-MM Observations during the Leonids. Earth, Moon, and Planets, 82/83 . pp. 129-140. ISSN 0167-9295. doi:10.1023/a:1017075315388.

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To identify the effect of meteor showers on the molecular content of the upper atmosphere of the Earth, we have carried out ground-based observations of atmospheric HCN. HCN radio observations at CSO (Hawaii) on Nov 18/19, 1999, the night after the second Leonid shower maximum, show unusually low HCN abundances above 45 km altitude, which are only recovered after sunrise. We also investigated UARS/HALOE satellite data on H2_O and O_3. No correlation appears of year round H_2O and O_3 around 55 km with annual meteor showers, nor with meteor activity at the time of the 1998 Leonid shower.

Item Type:Article
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Lis, Dariusz C.0000-0002-0500-4700
Miller, Martin0000-0003-3520-4946
Additional Information:© Kluwer Academic Publishers 1998. (Received: 9 August 2000; Accepted 2 September 2000) We thank referees Steve Charnley and Frans Rietmeijer for helpfull comments. This work was supported by grants from CNRS/INSU (G.D.R. Exobiologie and Action Spécifique" Grands Telescopes Etrangers") and CNES, which also provided financial support to Nicolas Lautié. Didier Despois and Philippe Ricaud thank the CSO for providing excellent working conditions, very valuable technical help, and free accomodation at the telescope. CSO is supported by the National Science Foundation grant AST-9980846. Editorial handling: M. Fonda.
Funding AgencyGrant Number
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut national des sciences de l'Univers (INSU)UNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Subject Keywords:Early Earth; H_2O; HCN; Leonids 1999; lower thermosphere; O_3; mesosphere; meteors; micro-wave; radio
Record Number:CaltechAUTHORS:20190829-131533566
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Official Citation:Despois, D., Ricaud, P., Lautié, N. et al. Earth, Moon, and Planets (1998) 82: 129.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98347
Deposited By: George Porter
Deposited On:30 Aug 2019 16:06
Last Modified:16 Nov 2021 17:38

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