Weather forecasting uses science and technology to predict atmospheric conditions. Computers are critical and used for data logging through sensors and collection methods like weather balloons, satellites, and stations. The data is then fed into complex modeling systems of equations to predict future conditions, with more accurate predictions requiring more data and powerful computers.

1. TJChiggs

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3. Weather forecasting
• Is the application of SCIENCE and
TECHNOLOGY to predict the state of the
atmosphere for a location
• Science and technology mainly meaning
computer systems
• Computers are used for two main applications
in weather forecasting:
1. Data logging
2. Modeling

4. Data logging (mainly data collection)
• (Definition: Data logging is the collection of
data at set intervals using sensors ,ADCs and
computer systems to monitor a process.)
• Sometimes used in monitoring and
controlling systems
• NB: No controlling involved in weather
forecasting

5. Methods to collect data
1. Weather balloons
2. Weather satellites
3. Weather stations

6. ……….chankman
Weather balloons
• A weather balloon carries a radiosonde into the
atmosphere
• A radiosonde is a battery powered telemetry instrument
• Telemetry meaning automated communication process by
which data is collected at inaccessible points and
transmitted to the receiving end
• (ground receiver)
• A radiosonde has: 1 sensors
2transimission path

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• The data is sent to the ground receiver
as radio signals
• The ADC convert the from analogue
format to digital format

8. Radiosonde

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Weather satellites
.primarily used to monitor the weather and
climate on earth
• Transmit pictures to the ground receiver as
coded radio signals
• The images determine the amount of cloud
covered ,wind direction etc

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Weather station
• These are ground recording stations

11. 2. MODELLING
• mEteoRolOgists select a group of equations
that describe the conditions of the
atmosphere
• They pick out the factors they think are
important
• These values are fed into a computer
• After a period of time the computer will
produce results of the atmospheric
conditions changes that might be expected

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• The accuracy of the predictions depend on
the data available to the computer
• The predictions require most POWERFUL
COMPUTERS

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