Forecasting Tutorial: Air Masses

15 May 2014 2

Forecasting Tutorials is a series of in-depth articles where we teach you the techniques of surf and marine forecasting.

Meteorology Basics: Pressure systems

By Marine Forecaster Katie Jackson

Our main concern in this article has to do with the relationship of a pressure system to its surroundings. Air pressure can be measured (atm, hectopascal, millibar) but the relative difference between pressure systems is what counts for weather and wind behaviour. In forecasting, it is best to focus on the interplay between pressure systems. It is the way pressure systems interact that matters.

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