Question

how can we make weather forecasting by seeing the barometric height​

Answer 1

Answer:

Predicting the Weather

Changes in air pressure help meteorologists predict the weather, just like a barometer does for the amateur weatherperson. High-pressure systems in the atmosphere typically indicate clear and warm sunny days. Low-pressure changes on the other hand, signal an oncoming storm. Low-pressure systems go hand in hand with thunderstorms and clouds full of water ready to let the rain begin. In between those two conditions, the barometer dial would read "Change."

The First Barometer

The first barometer, in 1648, consisted of a small pool of mercury in a bowl with a sealed-at-one-end glass tube sitting in the pool of mercury. Air pressure on the outside of the glass tube caused the mercury to climb up inside the column. When air pressure is high, signaling a clear and sunny day, the mercury from the pool rises inside the glass tube. When the air pressure drops, indicating an oncoming storm, the mercury inside the vacuum glass tube drops back into the pool at the bottom of the tube.

Types of Barometers

Barometers have changed significantly since the early days. Most people who have barometers inside their homes typically have an aneroid barometer. With a round body and dial face, this type of barometer contains an aneroid cell – a small cell or box without water – that changes its shape with increases in atmospheric pressure, which in turn changes the position of the dial. An altimeter is another type of barometer used in airplanes that measures altitude and air pressure. The other type of barometer – a "bar" meter – is the mercury barometer that measures the height of the mercury as a bar in a vacuum tube.