Category Archives: Meteorology

Is High Pressure Always Warm Air?

Posted on August 7, 2011 by Weather Guys Editor

High pressure systems can be cold or warm, humid or dry. The origin of a high-pressure region determines its weather characteristics.

If a high-pressure system moves into Wisconsin from the south during the summer . . . Continue reading →

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How is the Dew Point Measured?

Posted on August 1, 2011 by Weather Guys Editor

A dew point hygrometer consists of a small mirror, a narrow light beam and a light detector. The light beam is reflected off the mirror into the detector, which measures the brightness of the reflected light . . . Continue reading →

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What is the Heat Index?

Posted on June 19, 2011 by Weather Guys Editor

The heat index, or apparent temperature index, indicates how hot it feels. It is expressed as a function of air temperature and the relative humidity. . . Continue reading →

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What is with the Humidity?

Posted on May 15, 2011 by Weather Guys Editor

As the spring finally comes after a cool second half of April, it is not only the temperature that rises but also the humidity. Humidity is a measure of the amount of invisible water vapor that is in the air. Continue reading →

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How are the Temperatures in the Higher Atmosphere Measured?

Posted on January 16, 2011 by Weather Guys Editor

Meteorologists monitor the atmosphere above the surface by using a radio-equipped meteorological instrument package – called radiosondes – carried aloft by a helium-filled weather balloon.

The radiosondes . . . Continue reading →

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