The following web sites provide content
background for parameters measured by the Weather Tracker.
Air Pressure "The atoms and molecules that make up the various
layers in the atmosphere, despite their tiny size, actually exert
some weight on us. We feel this weight as pressure."
From: Jet Stream
Online Weather School
Relative Humidity "Relative humidity may be defined as the ratio of
the water vapor density (mass per unit volume) to the saturation
water vapor density, usually expressed in percent"
From: Weather
World 2010 Project
Dew Point "Dew point indicate the amount moisture in the
air. The higher the dew points, the higher the moisture content of
the air at a given temperature."
From: Weather
World 2010 Project
Density Altitude The density of air is affected by several factors: altitude,
temperature, and humidity. Learn more about the relationship
between these factors.
From:
Mountain
Flying LLC