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Download Weather - PAMS-Doyle
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Weather SOL 6.3 and 6.6 Earth’s Energy Budget • 30% reflected back into space • 70% absorbed by atmosphere, clouds, land, and oceans • Ultraviolet radiant energy is changed to infrared on earth and then radiated back into space. Earth’s Energy Budget Energy Transfers • Radiation brings all of the energy to the Earth from the sun • Convection currents redistribute the energy throughout the atmosphere and the oceans. Currents in the Atmosphere and Oceans • It is currents that redistribute the energy all over the planet that comes from the sun. The average mean temperature is fairly warm because of these currents. Cloud Formation • Water evaporates into vapor, it then rises into the atmosphere. It is much cooler in the upper troposphere so the water vapor condenses forming clouds Types of Clouds Weather Causes • Weather is caused by the unequal heating of the Earth’s surface. • Warm air rises and cool air sinks • Warm air is high pressure and cold air is low pressure • Low pressure causes some of the worst weather on Earth Atmosphere • The Earth’s atmosphere is 78% nitrogen, 21% oxygen, and the rest trace gases including; argon, carbon dioxide, and water vapor Air Pressure • Air pressure is the amount of air pushing down on us • It is measured by a barometer • Low pressure means lousy weather • High pressure means fair weather • Increase in altitude decrease in air pressure Humidity • Humidity is the amount of water vapor in the air • The more humid the air is the more uncomfortable you feel • 100% humidity is fog • It is measured with a psychrometer or hygrometer • Dew point is the temperature at which the air becomes 100% humid Atmospheric Layers • There are 4 layers of the atmosphere • Each is based on temperature • Troposphere is where we live, all weather takes place, and clouds are found • Stratosphere is where the jet stream and the ozone layer is found • Mesosphere is the coldest and stops most meteorites burn up • Thermosphere is the top layer, it is divided into the ionosphere (northern lights) and the exosphere (satellites) Weather Maps Weather Symbols Isobars-connect areas of equal pressure Are you feeling smarter? • Only a little more to go! • Yeah right!!!!!!
