Meteorology 



Atmosphere (dry air) 



Nitrogen = 78.08% \ 



Oxva- ^ToTt) 99-99% 



Argon = 0.93% i 



Carbon dioxide = 0.03% ' 



Neon = 0.0018% 



Helium = 0.000524% 



Krypton = 0.0001% 



Hydrogen = 0.00005% 



Xenon = 0.0000087% 



Ozone = to 0.000007% (increasing with altitude) 



Radon = .000000000000000006% (decreasing with 



altitude) 



Standard atmospheric pressure at sea level = 1,013,250 dynes per square centimeter* 



= 1,033.227 grams per square centimeter* 



= 1,033.227 centimeters of water 



= 1,013.250 millibars* 



= 760 millimeters of mercury 



= 76 centimeters of mercury 



= 33.8985 feet of water 



= 29.92126 inches of mercury 



= 14.6960 pounds per square inch 



= 1.033227 kilograms per square centimeter 



= 1.013250 bars* 



Absolute zero = (-) 273?15 C 



= (-)459°67 F 



Pressure 



1 dyne per square centimeter = 0.001 millibar* 



= 0.000001 bar* 



1 gram per square centimeter = 1 centimeter of water 



= 0.980665 millibar* 



= 0.07355592 centimeter of mercury 



= 0.0289590 inch of mercury 



= 0.0142233 pound per square inch 



= 0.001 kilogram per square centimeter* 



= 0.000967841 atmosphere 



1 millibar = 1,000 dynes per square centimeter* 



= 1.01971621 grams per square centimeter 



= 0.07500617 millimeter of mercury 



= 0.03345526 foot of water 



= 0.02952998 inch of mercury 



= 0.01450377 pound per square inch 



= 0.001 bar* 



= 0.00098692 atmosphere 



1 millimeter of mercury = 1.35951 grams per square centimeter 



= 1.3332237 millibars 



= 0.1 centimeter of mercury* 



= 0.04460334 foot of water 



= 0.39370079 inch of mercury 



= 0.01933677 pound per square inch 



= 0.001315790 atmosphere 



1 centimeter of mercury =10 millimeters of mercury* 



1 inch of mercury = 34.53155 grams per square centimeter 



= 33.86389 millibars 



= 25.4 millimeters of mercury' 



= 1.132925 feet of water 



= 0.491 1 541 pound per square inch 



= 0.03342106 atmosphere 



1 centimeter of water =1 gram per square centimeter 



= 0.001 kilogram per square centimeter 



719 



