Auroras can last between a few minutes to several hours. It occurs 50 to 100 miles above the earth, when energetic particles from a solar storm cause the gases in the upper atmosphere to glow. The Earth’s atmosphere is divided into five layers: exosphere, thermosphere, mesosphere, stratosphere, and troposphere.Īurora Borealis - It’s often called the "northern lights". These bring you sunny skies.Īrctic Air - An air mass that originates over Canada and brings us cold temperatures.Ītmosphere - A layer of gases surrounding a planet. Alto comes from the Latin word meaning "middle".Īnemometer - A weather instrument that measures the wind speed.Īnticyclone - A high-pressure system that moves in a clockwise motion. Almanacs list tide data, give the positions of the stars and forecast weather each day.Īlto - A prefix to cloud-type names for clouds generally found between 30 meters. These storms usually bring a few inches of snow.Īlmanac - A calendar that uses astronomical information and weather data. It’s the same as barometric pressure.Īlberta Clipper - A fast-moving low pressure system that occurs during the winter and sweeps southeast from Alberta, Canada, across the northern Great Plains and Midwest of the United States. Air pressure can change from place to place, and this causes air to move, flowing from areas of high pressure toward areas of low pressure. Advisory - A forecast issued by the National Weather Service to highlight conditions that require caution, but are not thought to be immediately life threatening.Īir - The mixture of gases, which form the atmosphere of the Earth.Īir Pollution – Chemicals or substances in the atmosphere that are directly or indirectly harmful to living things.Īir Pressure - The weight of air pressing down on earth.
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