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What is Heat Index?

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the 'apparent temperature.'

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Glossary

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...