500 mb air pressure 3-D map, NWSTC KC 2006 dr melanie renfrewOn this 500 mb 3D air pressure map I made with salt clay,
1) “Is the air pressure over L.A. higher than the Midwest or lower?”
2) “Does the clay represent air ‘density’ of molecules, or ‘elevation’ in the sky?”

upside down North America map3) “What states are in the ‘Midwest,’ ‘Out West,’ ‘Up North,’ ‘Down South,’ and ‘Back East’?”
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Earth with south at top