Dark blue cloudy sky

What is Acid Rain?

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

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Glossary

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

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...