Imperial College London
Alternate

Professor Joanna D. Haigh

Faculty of Natural Sciences, Department of Physics

Distinguished Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 7770j.haigh Website

 
 
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Assistant

 

Mr Luke Kratzmann +44 (0)20 7594 7770

 
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Location

 

Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dhomse:2013:10.5194/acpd-13-12263-2013,
author = {Dhomse, SS and Chipperfield, MP and Feng, W and Ball, WT and Unruh, YC and Haigh, JD and Krivova, NA and Solanki, SK and Smith, AK},
doi = {10.5194/acpd-13-12263-2013},
title = {Stratospheric O<sub>3</sub> changes during 2001–2010: the small role of solar flux variations in a CTM},
url = {http://dx.doi.org/10.5194/acpd-13-12263-2013},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:p>Abstract. Solar spectral fluxes (or irradiance) measured by the SOlar Radiation and Climate Experiment (SORCE) show different variability at ultraviolet (UV) wavelengths compared to other irradiance measurements and models (e.g. NRL-SSI, SATIRE-S). Some modelling studies have suggested that stratospheric/lower mesospheric O3 changes during solar cycle 23 (1996–2008) can only be reproduced if SORCE solar fluxes are used. We have used a 3-D chemical transport model (CTM), forced by meteorology from the European Centre for Medium-Range Weather Forecasts (ECMWF), to simulate middle atmospheric O3 using three different solar flux datasets (SORCE, NRL-SSI and SATIRE-S). Simulated O3 changes are compared with Microwave Limb Sounder (MLS) and Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) satellite data. Modelled O3 anomalies from all solar flux datasets show good agreement with the observations, despite the different flux variations. The off-line CTM reproduces these changes through dynamical information contained in the analyses. A notable feature during this period is a robust positive solar signal in the tropical middle stratosphere due to changes in stratospheric dynamics. Ozone changes in the lower mesosphere cannot be used to discriminate between solar flux datasets due to large uncertainties and the short time span of the observations. Overall this study suggests that, in a CTM, the UV variations detected by SORCE are not necessary to reproduce observed stratospheric O3 changes during 2001–2010.                        </jats:p>
AU  - Dhomse,SS
AU  - Chipperfield,MP
AU  - Feng,W
AU  - Ball,WT
AU  - Unruh,YC
AU  - Haigh,JD
AU  - Krivova,NA
AU  - Solanki,SK
AU  - Smith,AK
DO  - 10.5194/acpd-13-12263-2013
PY  - 2013///
TI  - Stratospheric O&lt;sub&gt;3&lt;/sub&gt; changes during 2001–2010: the small role of solar flux variations in a CTM
UR  - http://dx.doi.org/10.5194/acpd-13-12263-2013
ER  -
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