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scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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STP12 Abstracts<br />

Berlin, 12 - 16 July <strong>2010</strong><br />

SCOSTEP Symposium <strong>2010</strong><br />

Effect of sea surface temperature on the solar signal in the stratosphere <strong>an</strong>d troposphere<br />

as revealed by chemistry-climate model simulations from 1960 to 2006<br />

Shibata Kiyotaka , Deushi Makoto<br />

Meteorological Research <strong>Institut</strong>e<br />

Simulations on the past atmosphere were made with the chemistry-climate model<br />

(CCM) of Meteorological Research <strong>Institut</strong>e (MRI), MRI-CCM. Several runs with slightly<br />

different initial conditions were performed for about 47 years from 1960 to 2007 un<strong>der</strong><br />

different forcings. Major difference in the forcing is in the sea surface temperatures (SSTs).<br />

The first <strong>an</strong>d second SSTs are the observed one with <strong>an</strong>d without filtering of the solar 11year<br />

cycle, <strong>an</strong>d the third SST is the one simulated by the oce<strong>an</strong>-atmosphere coupled general<br />

circulation model of MRI. Solar signals are obtained by a multiple linear regression model<br />

<strong>an</strong>d their differences stemming from the SSTs are <strong>an</strong>alyzed in detail.

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