View source for File:Figure 2.7 - Patterns of May-July NNR MSLP anomalies for high and low DSS sea salt aerosol years.png

The spatial pattern of &lsquo;early winter&rsquo; May - July NNR MSLP anomalies calculated for: a) the 6 highest (1990, 1977, 1992, 1970, 1986 and 1975) Na concentration years at DSS between 1970 to 1995; b) the 6 lowest (1982, 1981, 1995, 1985, 1993 and 1971) Na concentration years; and, c) from the difference between the 6 highest and 6 lowest Na concentration years. The difference plot accentuates the circulation changes between SAM phases in the mid-latitude trough in the southwest Indian and Pacific Ocean sectors, together with the enhanced ridging in the circumpolar trough centred on 110&deg; E during high Na concentration years at DSS.