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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 term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

A type of cloud consisting mostly of small particles such as ice particles.

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

Snow that rises to 8 feet or higher.

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.