Barometric Pressure Headache

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What is Barometric Pressure?

In order to understand this, it is important to define some basic concepts:

Pressure The force applied to a unit area of surface.
or rephrased,
The force (per unit area) exerted on a surface by the gas (e.g.air) or liquid (e.g.water) in contact with it.

Therefore, we can paraphrase the above explanation of ‘pressure’ to define both air and water pressure:

Air Pressure The force (per unit area) exerted by the weight of air above an object.
e.g. the higher a person goes above sea level = less air pushes down on them = decreasing air pressure.
Water Pressure The force (per unit area) exerted by the weight of water above an object.
e.g. the deeper a person dives below sea level = more water from above pushing down on them = increasing water pressure.
In addition, the diver will also experience the weight of air from above the water surface.

This leads on to explaining what barometric pressure is:

Barometric pressure is also known as air pressure or atmospheric pressure and derives its name from the instrument used to measure it called a Barometer.

Units of Measurement for Barometric Pressure

The International System (SI) unit of pressure is the Pascal (Symbol: Pa) which is defined as one Newton per square meter.
However, the unit for measuring atmospheric pressure for international meteorological purposes remains the millibar (mbar or mb).
1 mb = 100 Pa = 1 hPa.

Metric units of measurement for atmospheric pressure include:

Pascal (Pa)
Kilopascal (kPa) Note :1kPa=1000Pa
Millibar (mbar or mb) Note: 1mbar=1 hectopascal (hPa)
Bar (bar) Note: 1bar=1000mbar=100KPa which is roughly equal to the atmospheric pressure on Earth at sea level ( 0.987 atm)

Equivalent units of measurement include:

Mercury:

Millimeter of mercury (mmHg)
Centimeter of mercury (cmHg) Note: 1cmHg = 10 mmHg
Inches of mercury (inHg)

Others:

Pounds per square inch (psi or alternatively lbf/in2, lbf/in2, lbf/sq in or lbf/sq in)
Pounds per square foot (psf)
Atmospheres (atm) Note: A standard atmosphere = 101325Pa /101.325kPa /1013.25mbar /760 mmHg /29.92 inHg /14.70 psi

DEFINITION, SYMPTOMS, CAUSES, WEATHER/ALTITUDE

What is a Barometric Pressure Headache?

◦  Issues Concerning Definition

Barometric Pressure Headache Symptoms

Barometric Pressure Headache Causes

Barometric Pressure and Weather

◦  What is Barometric Pressure?

◦  Factors Affecting Barometric Pressure

◦  How Does Weather Work?

◦  Barometric Pressure & Weather Conditions

◦  Weather Conditions & Risk of Headaches

◦  Forecasting the Weather

STATISTICS, TREATMENTS, EQUIPMENT

Headache Statistics

Treating & Dealing With Barometric Pressure Headaches

◦  Headache Diary

◦  Western Treatments

◦  Eastern & Alternative Treatments

◦  Caffeine and Headaches

◦  Magnesium and Headaches

◦  Other Ways to Tackle Headache Symptoms

Barometric Pressure Headache Equipment

◦  Types of Barometer

◦  Barometer Calibration

◦  Barometers and Other Equipment

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