Key Concepts for Today
¥Station Pressure and Surface Analyses
¥Reduced to Mean Sea Level Pressure (SLP) PGF Corresponds to Pressure Differences
¥Upper-Air Maps
¥On Isobaric (Constant Pressure) Surfaces   PGF Corresponds to Height Sloping Downhill
¥Contour Analysis
¥Surface Maps-Analyze Isobars of SLP                     Upper Air Maps-Analyze Height Contours