Dark blue cloudy sky

What is Crepuscular Rays?

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric molecules and particles. Contrast is enriched by dry smoke, dust, and fog. If a cumulus-type cloud comes between the observer and the sun in the afternoon, there is a high chance of seeing these rays. The same phenomenon occurs when sunlight is refracted by a cloud layer.

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Glossary

A very cold high pressure that originates over the Arctic Ocean.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

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A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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