A&O SCI 1 Lecture Notes - Lecture 2: Standard Deviation, Atmospheric Pressure
19 Aug 2016
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Put assignments in mailbox for 7150 for zuan ji, and send an email copy to prof mechoso. Weather: state of earth"s atmosphere at a given instant in time (seconds to weeks) Climate: the mean or average weather during a particular period and the deviations from that average during the selected period (months, years or thousands of years: ex. July is normally 85 f and sunny in los angeles: climate is long-term averages/deviations of weather. A measure of the internal heat energy of a substance random molecular motion in a substance creates internal heat energy: more movement ! higher temp. Atmospheric pressure: weight of the column of air above any point: air is not evenly distributed on earth"s surface, less air = low pressure, more air = high pressure. Standard atmosphere = 1atm: 1atm = 1013. 25 milibars (mb, 1atm = 1013. 25 hectopascals (hpa, 1atm = 29. 92 inches mercury (inhg) High pressure (more air in column): clear skies, warm weather, calm weather.
