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Weather Analysis pg. 81. Recording data after weather data is collected it is plotted on a map using station models station models- record of weather.

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Presentation on theme: "Weather Analysis pg. 81. Recording data after weather data is collected it is plotted on a map using station models station models- record of weather."— Presentation transcript:

1 Weather Analysis pg. 81

2 Recording data after weather data is collected it is plotted on a map using station models station models- record of weather data for a particular site at a particular time gives meteorologists a uniform way to communicate data after weather data is collected it is plotted on a map using station models station models- record of weather data for a particular site at a particular time gives meteorologists a uniform way to communicate data

3 Surface Analysis to plot data globally, use isopleths lines that connect points of equal values lines of equal pressure-isobars lines of equal temps- isotherms the spacing of lines can provide info wind- the closer the lines the faster pressure- closers the isobars, larger the pressure difference; strong winds to plot data globally, use isopleths lines that connect points of equal values lines of equal pressure-isobars lines of equal temps- isotherms the spacing of lines can provide info wind- the closer the lines the faster pressure- closers the isobars, larger the pressure difference; strong winds

4 isopleths can show where high and low pressure systems are combined with isotherms it will tell the frontal system there must know current weather conditions before forecasting can occur can show where high and low pressure systems are combined with isotherms it will tell the frontal system there must know current weather conditions before forecasting can occur

5 isopleth

6 Short Term Forecast reliable forecasts must be taken from data at multiple levels in the atmosphere can be digital or analog forecasts Based on the fact that the atmosphere behaves as a fluid reliable forecasts must be taken from data at multiple levels in the atmosphere can be digital or analog forecasts Based on the fact that the atmosphere behaves as a fluid

7 digital forecasts can use mathematical equations to determine how variables change with time (temp, pressure, density) forecasts that rely on mathematical data are digital forecasts the more data, the more accurate the forecast can use mathematical equations to determine how variables change with time (temp, pressure, density) forecasts that rely on mathematical data are digital forecasts the more data, the more accurate the forecast

8 analog forecasts compares current weather patterns to patterns that have happened in the past assumes weather systems behave in a similar fashion must find a past event that is similar in all levels of the atmosphere useful for monthly and seasonal forecasting compares current weather patterns to patterns that have happened in the past assumes weather systems behave in a similar fashion must find a past event that is similar in all levels of the atmosphere useful for monthly and seasonal forecasting

9 long term forecasting factors in the landscape make it hard to accurately predict weather forecasts that are in the 1-3 day range are no longer based on the movement of clouds and precipitation dependent on the upper level features such as low pressure systems can accurately predict if it will be wet or dry and when rain will come factors in the landscape make it hard to accurately predict weather forecasts that are in the 1-3 day range are no longer based on the movement of clouds and precipitation dependent on the upper level features such as low pressure systems can accurately predict if it will be wet or dry and when rain will come

10 Accuracy in long term forecasting 4-7 day forecasts rely on changes in the surface weather based on weather patterns in the troposphere and lower stratosphere can only estimate weather must be able to understand how all facets effect weather patterns for future 4-7 day forecasts rely on changes in the surface weather based on weather patterns in the troposphere and lower stratosphere can only estimate weather must be able to understand how all facets effect weather patterns for future

11 Station model pg.82 Create a station model for our weather today. Include the following (use appendix E pg. 915): Type of low cloud Temperature Wind direction and speed Dew point temp Percentage of sky covered Barometric pressure Turn in: Ch. 12 assessment pg. 326-327 #’s 1-6, 8-19 #’s 1-5 test practice Create a station model for our weather today. Include the following (use appendix E pg. 915): Type of low cloud Temperature Wind direction and speed Dew point temp Percentage of sky covered Barometric pressure Turn in: Ch. 12 assessment pg. 326-327 #’s 1-6, 8-19 #’s 1-5 test practice


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