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ECHAM5 simulations with the HO2 + NO → HNO3 reaction

Gottschaldt, K. and Voigt, C. and Kärcher, B. (2010) ECHAM5 simulations with the HO2 + NO → HNO3 reaction. DLR.

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Abstract

A HNO3-forming channel of the HO2 + NO reaction recently found in laboratory measurements (Butkovskaya et al., 2005, 2007) may significantly alter the concentration of HNO3, NOx, O3 and other trace gases in the tropopause region. This region is also significantly affected by air traffic NOx emissions. Cariolle et al. (2008) adopted a pressure- and temperature dependent parameterisation of the rate constant to assess the impact of the HO2 + NO -> HNO3 reaction on trace gas concentrations in a 2-D stratosphere-troposphere model, and a 3-D tropospheric chemical transport model. We implemented the parameterisation of Cariolle et al. (2008) into the 3-D stratosphere- troposphere chemistry-climate model ECHAM5 / MESSy. Here we present results of our test runs, in support of planned studies of the effects of aircraft emissions on atmospheric chemistry.

Document Type:Proceedings
Title:ECHAM5 simulations with the HO2 + NO → HNO3 reaction
Authors:
AuthorsInstitution or Email of Authors
Gottschaldt, K.UNSPECIFIED
Voigt, C.DLR
Kärcher, B.DLR
Date:2010
Number of Pages:4
Editors:
EditorsEmail
Sausen, R.DLR
Publisher:DLR
Status:Published
Keywords:climate modelling, atmospheric chemistry, ozone, nitric acid
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:29 Dec 2011 15:14
Last Modified:29 Dec 2011 15:40

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