Question 1

A persistence forecast could be quite accurate when

Accepted Answer

A)  a frontal system approaches your location at constant speed. 
B)  you are positioned in the middle of a large,stationary air mass. 
C)  the weather has been unusually cold for several days. 
D)  upper level winds blow straight from west to east. 
A)  a frontal system approaches your location at constant speed. 
B)  you are positioned in the middle of a large,stationary air mass. 
C)  the weather has been unusually cold for several days. 
D)  upper level winds blow straight from west to east.

Question 2

The forecasting technique that produces several versions of a forecast model,each beginning with slightly different weather information to reflect errors in the measurements,is called

Accepted Answer

A)  climatology forecasting. 
B)  redundancy analysis. 
C)  persistence forecasting. 
D)  ensemble forecasting. 
E)  probability forecasting. 
A)  climatology forecasting. 
B)  redundancy analysis. 
C)  persistence forecasting. 
D)  ensemble forecasting. 
E)  probability forecasting.

Question 3

An analysis is

Accepted Answer

A)  a forecast chart that shows the atmosphere at some future time. 
B)  a forecast chart that compares past weather maps with those of the present. 
C)  a surface or upper-level chart that interprets the present weather patterns. 
D)  a forecast method used in long range weather prediction. 
E)  a method used to determine skill in predicting the weather. 
A)  a forecast chart that shows the atmosphere at some future time. 
B)  a forecast chart that compares past weather maps with those of the present. 
C)  a surface or upper-level chart that interprets the present weather patterns. 
D)  a forecast method used in long range weather prediction. 
E)  a method used to determine skill in predicting the weather.

Question 4

A prog is

Accepted Answer

A)  a chart that interprets the current state of the atmosphere. 
B)  an instrument that draws lines on an upper-level chart. 
C)  a new method of forecasting the weather. 
D)  a forecast chart that shows the atmosphere at some future time. 
E)  another name for a probability forecast. 
A)  a chart that interprets the current state of the atmosphere. 
B)  an instrument that draws lines on an upper-level chart. 
C)  a new method of forecasting the weather. 
D)  a forecast chart that shows the atmosphere at some future time. 
E)  another name for a probability forecast.

Question 5

What local signs would you look for to predict the approach of a low pressure center or a weather front?

Accepted Answer

To predict the approach of a low pressur

Question 6

Exhibit 13-1Use the following illustration of a middle latitude cyclone.The dashed lines show the positions of the fronts 6 hours ago.  
-Refer to Exhibit 13-1.At which of the 4 positions would you expect to hear the following 12-hour forecast: "Cloudy with possible showers today,turning colder by tonight"?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 7

The greatest improvement in forecasting skill during the past 30 years has been made in forecasting

Accepted Answer

A)  snowstorms along the eastern seaboard. 
B)  the development of middle latitude cyclones in the Pacific Ocean. 
C)  severe storm warnings for hurricanes and tornadoes. 
D)  the movement of warm and cold fronts. 
E)  maximum and minimum temperature 6 to 10 days into the future. 
A)  snowstorms along the eastern seaboard. 
B)  the development of middle latitude cyclones in the Pacific Ocean. 
C)  severe storm warnings for hurricanes and tornadoes. 
D)  the movement of warm and cold fronts. 
E)  maximum and minimum temperature 6 to 10 days into the future.

Question 8

An accurate forecast

Accepted Answer

A)  always shows skill. 
B)  may or may not show skill. 
C)  never shows skill. 
D)  requires complex computer equipment. 
A)  always shows skill. 
B)  may or may not show skill. 
C)  never shows skill. 
D)  requires complex computer equipment.

Question 9

A forecast of an extended period of dry weather would be made for a region beneath

Accepted Answer

A)  an upper-level trough. 
B)  the polar jet stream. 
C)  a cold pool of air aloft. 
D)  an upper-level ridge. 
E)  a shortwave trough. 
A)  an upper-level trough. 
B)  the polar jet stream. 
C)  a cold pool of air aloft. 
D)  an upper-level ridge. 
E)  a shortwave trough.

Question 10

Warm advection occurs when

Accepted Answer

A)  the wind veers (changes direction in a clockwise manner)with height. 
B)  the wind backs (changes direction in a counterclockwise manner)with height. 
C)  the isotherms are parallel to the winds. 
D)  the wind veers with height and the isotherms are parallel to the winds. 
A)  the wind veers (changes direction in a clockwise manner)with height. 
B)  the wind backs (changes direction in a counterclockwise manner)with height. 
C)  the isotherms are parallel to the winds. 
D)  the wind veers with height and the isotherms are parallel to the winds.

Question 11

Doppler radar is helpful for measuring precipitation,but not wind.

Accepted Answer

A) True 
 B)False

Question 12

Suppose a large anticyclone covered the eastern United States.What do you think the corresponding 500-mb chart would look like? Why?

Accepted Answer

If a large anticyclone covered the easte

Question 13

Which of the following is not a forecaster's rule of thumb?

Accepted Answer

A)  For short time intervals,mid-latitude cyclonic storms and fronts tend to move in the same direction and at approximately the same speed as they did during the previous six hours. 
B)  Low pressure areas tend to move in a direction that parallels the isobars in the warm air sector. 
C)  Lows tend to move toward the region of greatest pressure drop. 
D)  Highs tend to move toward the region of greatest pressure drop. 
A)  For short time intervals,mid-latitude cyclonic storms and fronts tend to move in the same direction and at approximately the same speed as they did during the previous six hours. 
B)  Low pressure areas tend to move in a direction that parallels the isobars in the warm air sector. 
C)  Lows tend to move toward the region of greatest pressure drop. 
D)  Highs tend to move toward the region of greatest pressure drop.

Question 14

Which of the following can cause errors in forecasts made by numerical weather prediction models?

Accepted Answer

A)  flaws in the computer models 
B)  errors that creep in along model boundaries 
C)  sparseness of meteorological data 
D)  inadequate representation of pertinent meteorological processes 
E)  all of the above 
A)  flaws in the computer models 
B)  errors that creep in along model boundaries 
C)  sparseness of meteorological data 
D)  inadequate representation of pertinent meteorological processes 
E)  all of the above

Question 15

Very short-range forecasts often utilize which of the following forecast methods?

Accepted Answer

A)  steady-state or trend method 
B)  pattern recognition method 
C)  ensemble method 
D)  both steady-state (trend method)and ensemble method 
E)  both steady-state (trend method)and pattern recognition method 
A)  steady-state or trend method 
B)  pattern recognition method 
C)  ensemble method 
D)  both steady-state (trend method)and ensemble method 
E)  both steady-state (trend method)and pattern recognition method

Question 16

Explain how observed teleconnection patterns can help in the preparation of a seasonal weather forecast.

Accepted Answer

The answer of Explain how observed teleconnection patterns can help...

Question 17

Thickness charts help forecasters

Accepted Answer

A)  identify air masses. 
B)  locate fronts. 
C)  predict daily maximum and minimum temperatures. 
D)  predict whether falling precipitation will be rain or snow. 
E)  all of the above 
A)  identify air masses. 
B)  locate fronts. 
C)  predict daily maximum and minimum temperatures. 
D)  predict whether falling precipitation will be rain or snow. 
E)  all of the above

Question 18

Describe the difference between persistence and steady-state forecasts.

Accepted Answer

The answer of Describe the difference between persistence and steady-state...

Question 19

Which of the following is presently a problem with modern-day weather predictions?

Accepted Answer

A)  Computer forecast models make assumptions about the atmosphere that are not always correct. 
B)  There are regions of the world where only space observations are available. 
C)  Computer models do not always adequately interpret the surface's influence on the weather. 
D)  The distance between grid points on some models is too large to pick up smaller-scale weather features such as thunderstorms. 
E)  all of the above 
A)  Computer forecast models make assumptions about the atmosphere that are not always correct. 
B)  There are regions of the world where only space observations are available. 
C)  Computer models do not always adequately interpret the surface's influence on the weather. 
D)  The distance between grid points on some models is too large to pick up smaller-scale weather features such as thunderstorms. 
E)  all of the above

Question 20

Weather forecast that predicts that the future weather will be the same as the present weather is called

Accepted Answer

A)  a steady-state forecast. 
B)  the trend method. 
C)  a persistence forecast. 
D)  the analogue method. 
E)  an extended weather forecast. 
A)  a steady-state forecast. 
B)  the trend method. 
C)  a persistence forecast. 
D)  the analogue method. 
E)  an extended weather forecast.

A persistence forecast could be quite accurate when

The forecasting technique that produces several versions of a forecast model,each beginning with slightly different weather information to reflect errors in the measurements,is called

An analysis is

A prog is

What local signs would you look for to predict the approach of a low pressure center or a weather front?

The greatest improvement in forecasting skill during the past 30 years has been made in forecasting

An accurate forecast

A forecast of an extended period of dry weather would be made for a region beneath

Warm advection occurs when

Doppler radar is helpful for measuring precipitation,but not wind.

Suppose a large anticyclone covered the eastern United States.What do you think the corresponding 500-mb chart would look like? Why?

Which of the following is not a forecaster's rule of thumb?

Which of the following can cause errors in forecasts made by numerical weather prediction models?

Very short-range forecasts often utilize which of the following forecast methods?

Explain how observed teleconnection patterns can help in the preparation of a seasonal weather forecast.

Thickness charts help forecasters

Describe the difference between persistence and steady-state forecasts.

Which of the following is presently a problem with modern-day weather predictions?

Weather forecast that predicts that the future weather will be the same as the present weather is called

Earth and Its Atmosphere

Energy: Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Thunderstorms and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

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Exam 13: Weather Forecasting

A persistence forecast could be quite accurate when

The forecasting technique that produces several versions of a forecast model,each beginning with slightly different weather information to reflect errors in the measurements,is called

An analysis is

A prog is

What local signs would you look for to predict the approach of a low pressure center or a weather front?

The greatest improvement in forecasting skill during the past 30 years has been made in forecasting

An accurate forecast

A forecast of an extended period of dry weather would be made for a region beneath

Warm advection occurs when

Doppler radar is helpful for measuring precipitation,but not wind.

Suppose a large anticyclone covered the eastern United States.What do you think the corresponding 500-mb chart would look like? Why?

Which of the following is not a forecaster's rule of thumb?

Which of the following can cause errors in forecasts made by numerical weather prediction models?

Very short-range forecasts often utilize which of the following forecast methods?

Explain how observed teleconnection patterns can help in the preparation of a seasonal weather forecast.

Thickness charts help forecasters

Describe the difference between persistence and steady-state forecasts.

Which of the following is presently a problem with modern-day weather predictions?

Weather forecast that predicts that the future weather will be the same as the present weather is called

Earth and Its Atmosphere

Energy: Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Thunderstorms and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters