predicting weather. meteorologist a person who studies the weather. they make weather maps from...
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Predicting Weather
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Meteorologist• A person who studies the weather.
• They make weather maps from information gathered using various weather instruments.
• Doppler Radar
• Weather balloons
• Computers
• Satellites
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Technology Used
Thermometer Measures air temperature
Barometer Measures air pressure
Anemometer Measures wind speed
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• Surface Observations• Normally at Airports• Made by people• Made by machines
• ASOS• Automated• Surface• Observing• System
Analyzing the WeatherAnalyzing the Weather
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Collecting Data
• Doppler Radar
• Weather Balloons
• Satellites
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• Measures direction and speed of moving objects
• Ex. Precipitation• Can see long distances• Great detail• Very sensitive
• Can detect birds, bats, bugs, pollen in the air and leaves rustling on nearby trees.
Doppler RadarDoppler Radar
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• Contains equipment to measure conditions
• Records humidity, temperature, pressure
• Launched twice a day
• At least 120 sites around the country
• 900 Around the world
Weather BalloonsWeather Balloons
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Satellites• Dozens around the world• Keep watch over Earth
– Some are stationary– Some rotate
• Measure– Clouds– Pollution– Storms– Ocean Currents– Snow Cover– Ice Cover
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Weather Maps• With all of this data meteorologists make
weather maps
• There are six basic types of weather maps:– Satellite
– Radar
– Precipitation
– Temperature
– Wind speed
– Front
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What do we use these maps for?
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Satellite Maps
Cloud Cover Height Thickness Movement
Allow us to track storms
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What do we use these maps for?
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Radar Maps
Precipitation Light rain – blue Medium rain –
Green Heavy rain – Red Winter mix – Pink Snow - White
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What do we use these maps for?
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Temperature Maps
Temperature Displays
temperatures on map
Uses color to show temperatures Blue = Cold Green = 40 – 80 Yellow = Over
80
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What do we use these maps for?
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Precipitation Maps
Precipitation More detailed
than radar maps Provides type of
precipitation and amount
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What do we use these maps for?
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Wind Speed Maps
Wind Speed Numbers
represent gusts Colors represent
speeds Isobars (defined
later) explain wind speed in greater detail
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What do we use these maps for?
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Front Maps
High and Low Pressure Areas High Pressure –
Sunny Low Pressure –
Rainy Warm Fronts Cold Fronts Stationary Fronts Occluded Fronts
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Symbols• Isobars
– Lines of equal pressure. The closer together two isobars are the stronger the winds.
• Isotherms– Lines representing equal
temperature.• None on radar or satellite
maps usually • In the attached photo, the
red bars are isobars and the yellow are isotherms
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Isobars
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Fronts on a weather mapWarm occluded
• Cold
Stationary
The symbols point in the directiondirection that the front is moving towards
Pressure symbols:
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Map Symbols
• Weather information can be represented on a weather map using symbols:– Air pressure
– High and low pressure
– Wind direction
– Wind Speed
– Fronts
– Various precipitation
– Temperature