Saturday, 2 June 2018

What is Dew Point?

It is a temperature at which water vapor present in the air start condense into water droplet or you can say transform into liquid from gas. Dew temperature is maximum temperature where air can’t hold mixed water vapor and start condensing into the liquid water. Dew point must be lower or equal to the air temperature. Rise in dew point and become equal to air temperature forms Dew, Fog or clouds and at the same time relative humidity can be measure 100%.

Atmosphere’s temperature depend upon the temperature of air and dew point temperature, like colder atmosphere means rise in temperature of air and fall in temperature of dew point and water vapour turn into fog, dew, or cloud. And with this strategy we predict for the rain and winters.

Relative humidity is known as percentage of humidity means as like its name it is a measurement of humidity in the air and with the dew point temperature you can measure absolute water vapour present in the air. At the very hot or warm time the dew point can be 75 to 77 degree F, and sometimes it also cross 80 degree but it always shows constant amount of water vapor in the atmosphere but relative humidity fluctuates.

Usually the best time to measure dew point is summer you can actually feel the humid outside. It can be also measurable that how much water vapour is available in the atmosphere and with a higher availability of water vapour in atmosphere is the sign of more shower or rain.

Why Dew Point:

Reason why dew point is useful:

•           Dew point reflects the humidity.
•           Dew point is the indication of severe season.
•           Helps weather forecast to predict the temperature.
•           Relative humidity measures with the help of Dew point 

How to Calculate Dew Point:

There is a device known as Hygrometer and you can physically measure the dew point temperature with the help of this device.
Humidity measures with the help of dew point and there is an equation which is used to determine the dew point.

Equation: (Relative Humidity = Mixing Ratio / Saturation Mixing Ratio x 100).

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