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HOx measurements in the summertime upper troposphere over Europe: a comparison of observations to a box model and a 3-D model

Regelin, E. and Harder, H. and Martinez, M. and Kubistin, D. and Tatum Ernest, T. and Bozem, H. and Klippel, T. and Hosaynali-Beygi, Z. and Fischer, H. and Sander, R. and Jöckel, Patrick and Königstedt, R. and Lelieveld, J. (2013) HOx measurements in the summertime upper troposphere over Europe: a comparison of observations to a box model and a 3-D model. Atmospheric Chemistry and Physics, 13, pp. 10703-10720. Copernicus Publications. DOI: 10.5194/acp-13-10703-2013 ISSN 1680-7316

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Official URL: http://www.atmos-chem-phys.net/13/10703/2013/

Abstract

In situ airborne measurements of OH and HO2 with the HORUS (HydrOxyl Radical measurement Unit based on fluorescence Spectroscopy) instrument were performed in the summertime upper troposphere across Europe during the HOOVER 2 (HOx OVer EuRope) campaign in July 2007. Complementary measurements of trace gas species and photolysis frequencies were conducted to obtain a broad data set, which has been used to quantify the significant HOx sources and sinks. In this study we compare the in situ measurement of OH and HO2 with simulated mixing ratios from the constrained box model CAABA/MECCA (Chemistry As A Box Model Application/Module Efficiently Calculating the Chemistry of the Atmosphere), and the global circulation model EMAC (ECHAM5/MESSy Atmospheric Chemistry Model). The constrained box model reproduces the observed OH and HO2 mixing ratios with better agreement (obs/mod median 98% OH, 96% HO2) than the global model (median 76% OH, 59% HO2). The observations and the computed HOx sources and sinks are used to identify deviations between the models and their impacts on the calculated HOx budget.

Item URL in elib:https://elib.dlr.de/85070/
Document Type:Article
Title:HOx measurements in the summertime upper troposphere over Europe: a comparison of observations to a box model and a 3-D model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Regelin, E.Max Planck Institute for ChemistryUNSPECIFIED
Harder, H.Max Planck Institute for ChemistryUNSPECIFIED
Martinez, M.Max Planck Institute for ChemistryUNSPECIFIED
Kubistin, D.Max Planck Institute for ChemistryUNSPECIFIED
Tatum Ernest, T.Max Planck Institute for ChemistryUNSPECIFIED
Bozem, H.Max Planck Institute for ChemistryUNSPECIFIED
Klippel, T.Max Planck Institute for ChemistryUNSPECIFIED
Hosaynali-Beygi, Z.Max Planck Institute for ChemistryUNSPECIFIED
Fischer, H.Max Planck Institute for ChemistryUNSPECIFIED
Sander, R.Max Planck Institute for ChemistryUNSPECIFIED
Jöckel, PatrickDLR, IPAUNSPECIFIED
Königstedt, R.Max Planck Institute for ChemistryUNSPECIFIED
Lelieveld, J.Max Planck Institute for ChemistryUNSPECIFIED
Date:2013
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI :10.5194/acp-13-10703-2013
Page Range:pp. 10703-10720
Publisher:Copernicus Publications
ISSN:1680-7316
Status:Published
Keywords:hydroxyl radical, atmospheric chemistry, EMAC model, atmospheric chemistry box model, HOx budget
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt ESMVal (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Jöckel, Dr. Patrick
Deposited On:07 Nov 2013 08:19
Last Modified:02 May 2019 14:04

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