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mE' tE o rol' o jE, the science dealing with the atmosphere, weather, and climate


World Meteorological OrganizationThe World Meteorological Organization
is a specialized agency of the United Nations which operates networks of weather stations in all parts of the world and uses satellites and other instruments to forecast the weather and provide vital information for the advance warnings that save lives and reduce damage to property and the environment.
The Ocean We Live InThe Ocean We Live In
consists of four great regions of air -- troposphere, stratosphere, ionosphere, and exosphere; all life on earth is squeezed into the lowest 20 miles of that ocean.
The Composition of Earth's AtmosphereThe Composition of Earth's Atmosphere
includes, believe it or not, only 21% oxygen, with the remainder being nitrogen, water vapor, and other gases.
BarometerA Barometer
is an instrument for measuring atmospheric pressure. The atmosphere exerts a pressure because air has weight and is being pulled to the earth by the force of gravity. For this reason atmospheric pressure depends on the height of air above the point at which it is being measured and is lower on top of a mountain than it is at sea level.
Fronts and Frontal ZonesFronts and Frontal Zones
When the boundary zone between two contrasting air masses is sharply defined, it is called a frontal zone, and the edge of the frontal zone that is next to the warmer air is called the front.
is a flash of light in the sky caused by an electrical current that may flow between parts of the same cloud, between different clouds, or between clouds and the earth.
TornadoA Tornado
is defined as a violently rotating column of air extending from a thunderstorm to the ground, and can generate wind speeds of 250 mph or more.
Launched on April 1, 1960, the Television and InfraRed Observation Satellite was NASA's (and the world's) first test of the feasibility of using satellites to monitor and predict weather patterns. Although it ceased to function in June 1960, it proved that satellites could be used to improve the science of weather forecasting.
Weather Balloon, 1957Weather Balloon, 1957
weather forecasting mechanismWeather Forecasting Mechanism

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