Direct and indirect effects of solar variations on stratospheric ozone and temperatureReport as inadecuate




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Chinese Science Bulletin

, Volume 58, Issue 31, pp 3840–3846

First Online: 06 May 2013Received: 16 January 2013Accepted: 06 March 2013DOI: 10.1007-s11434-013-5822-2

Cite this article as: Shang, L., Tian, W., Dhomse, S. et al. Chin. Sci. Bull. 2013 58: 3840. doi:10.1007-s11434-013-5822-2

Abstract

We have used a fully coupled chemistry-climate model WACCM to investigate the relative importance of the direct and indirect effects of 11a solar variations on stratospheric temperature and ozone. Although the model does not contain a quasi-biennial oscillation QBO and uses fixed sea surface temperature SST, it is able to produce a second maximum solar response in tropical lower stratospheric TLS temperature and ozone of approximately 0.5 K and 3%, respectively. In the TLS, the solar spectral variations in the chemistry scheme play a more important role than solar spectral variations in the radiation scheme in generating temperature and ozone responses. The chemistry effect of solar variations causes significant changes in the Brewer-Dobson BD circulation resulting in ozone anomalies in the TLS. The model simulations also show a negative feedback in the upper stratosphere between the temperature and ozone responses. A wavelet analysis of the modeled ozone and temperature time series reveals that the maximum solar responses in ozone and temperature caused by both chemical and radiative effects occur at different altitudes in the upper stratosphere. The analysis also confirms that both the direct radiative and indirect ozone feedback effects are important in generating a solar response in the upper stratospheric temperatures, although the solar spectral variations in the chemistry scheme give the largest solar cycle power in the upper stratospheric temperature.

Keywordssolar cycle stratospheric ozone stratospheric temperature chemistry radiation This article is published with open access at Springerlink.com

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Author: Lin Shang - WenShou Tian - Sandip Dhomse - Martyn P. Chipperfield - Yi Liu - WuKe Wang

Source: https://link.springer.com/







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