Anomaly of the Moist Potential Vorticity Substance with Mass Forcing and Its Application in Diagnosing Mei-Yu Front Rainfall  | 
	
|   Figure 1   Vertical-meridional cross sections of MPVS 10 6  K m -1  s -1  and potential temperature K along a 116#cod#x000b0;E on 23 June 1999, b 115#cod#x000b0;E on 24 June 1999, c 112#cod#x000b0;E on 25 June 1999, and d 118#cod#x000b0;E on 26 June 1999. Solid and dashed lines denote positive and negative values of MPVS, respectively, and long-dashed lines represent potential temperature.  | 
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