How to Find Relative Barometric Pressure

Absolute barometric pressure is the actual atmospheric air pressure at a particular location that profoundly depends upon the location altitude. Relative or sea level pressure is the corrected barometric pressure calculated for the sea or zero level, and usually used to refer atmospheric conditions. The importance of the relative pressure (P0) is that it allows calculating the absolute pressure (P) at any elevation (h) using the barometric formula: P=P0*exp(-Mgh/RT), where M molar mass of air, g standard gravity, T temperature and R universal gas constant. The relative barometric pressure is the pressure reported by weather stations.

    Navigate to the Weather Channel website (see Resources), and enter the location ZIP code in the field; click "Search."

    Read the relative barometric pressure (labeled "Pressure") in inches of mercury.

    Navigate to the National Weather Service pressure unit converter (see Resources) to translate the pressure in inches of mercury to a different unit.

    Enter the pressure from Step 3 in the box, and select the "inches of mercury" radio button; click "Convert."

    Step 5

    Pressure values will be expressed in six different units.

Related Articles

How to Convert mm Hg to in Hg
How to Go From CM to MMHG
How to Convert a Water Column to Pounds of Pressure
How to Understand Barometric Pressure Readings
How to Convert hPa to Altitude
How to Convert Moles to Pressure
How to Calculate Hydraulic Press Force in Tons
Absolute Vs. Relative Barometric Pressure
How to Make a Weather Station Model
What Units Do Barometers Measure In?
What Is a Pascal Unit?
How to Find Partial Pressures
Five Different Types of Weather Maps
How to Convert Density to Pressure
How to Convert PSI to PSIG
How to Convert kPa to kN/m
What Is a Differential Manometer?
How Does Temperature Affect Barometric Pressure?
How to Convert Kilopascals to Joules
How to Convert mmHg to a kPa

Dont Go!

We Have More Great Sciencing Articles!