Rethinking the mesosphere's magnesium ion chemistry

Simon Petrie

doi:10.1071/EN04070

Rethinking the mesosphere's magnesium ion chemistry

Simon Petrie^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

High-level quantum chemical calculations address the structural and thermochemical properties of several novel magnesium-containing molecular ions which, we argue, are relevant to the Mg⁺ chemistry initiated by meteoric ablation in the mesosphere. A model for Mg⁺ chemistry is evaluated, with results indicating that most ionized magnesium at altitudes of 90 km and below is rapidly hydrated due to the association reactions of the pivotal HOMg⁺ ion. The implications of this new mechanism, apparently leading towards noctilucent cloud nucleation by Mg⁺, are briefly explored.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Environmental Chemistry
Volume	2
Issue number	1
DOIs	https://doi.org/10.1071/EN04070
Publication status	Published - 2005

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abstract = "High-level quantum chemical calculations address the structural and thermochemical properties of several novel magnesium-containing molecular ions which, we argue, are relevant to the Mg+ chemistry initiated by meteoric ablation in the mesosphere. A model for Mg+ chemistry is evaluated, with results indicating that most ionized magnesium at altitudes of 90 km and below is rapidly hydrated due to the association reactions of the pivotal HOMg+ ion. The implications of this new mechanism, apparently leading towards noctilucent cloud nucleation by Mg+, are briefly explored.",

keywords = "Ab initio calculations, Atmospheric chemistry, Magnesium, Mesosphere, Noctilucent clouds",

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AB - High-level quantum chemical calculations address the structural and thermochemical properties of several novel magnesium-containing molecular ions which, we argue, are relevant to the Mg+ chemistry initiated by meteoric ablation in the mesosphere. A model for Mg+ chemistry is evaluated, with results indicating that most ionized magnesium at altitudes of 90 km and below is rapidly hydrated due to the association reactions of the pivotal HOMg+ ion. The implications of this new mechanism, apparently leading towards noctilucent cloud nucleation by Mg+, are briefly explored.

KW - Ab initio calculations

KW - Atmospheric chemistry

KW - Magnesium

KW - Mesosphere

KW - Noctilucent clouds

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U2 - 10.1071/EN04070

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SN - 1448-2517

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SP - 25

EP - 30

JO - Environmental Chemistry

JF - Environmental Chemistry

IS - 1

ER -

Rethinking the mesosphere's magnesium ion chemistry

Abstract

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