Ch 9: Air Distribution and Movement

About This Chapter

Watch video lessons on air distribution and movement to learn about Rossby waves, global wind patterns, jet streams and more. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these topics.

Air Distribution and Movement - Chapter Summary and Learning Objectives

This chapter will teach you about weather fronts, wind belts and jet streams among other topics related to air distribution and movement. You'll learn about cyclones and monsoons and find out how different types of air masses affect the weather. By the end of this chapter, you should be able to:

  • Explain the difference between the single-cell and three-cell models of general circulation.
  • Discuss the formation of El Nino and La Nina.
  • Differentiate amongst various types of winds and breezes.
  • Identify types of fronts, including cold, warm, stationary and occluded fronts and dry lines.

VideoObjective
Atmospheric Circulation & its Relation to Scale & ObservationDefine atmospheric circulation. Describe the concept of scale and observation as they relate to atmospheric circulation.
The Single-Cell Model of General CirculationDescribe the single-cell model of general circulation.
The Three-Cell Model of General CirculationDescribe the three-cell model of general circulation, including the Hadley cell and the Ferrel and Polar cells.
Semi-Permanent Pressure Cells & Their EffectsDescribe semi-permanent pressure cells and their effects.
Understanding Weather Fronts: Types & Their Effect on WeatherDescribe fronts dividing air masses and their effect on weather.
Identifying the Global Wind Patterns of the Wind BeltsIdentify and describe the wind patterns of the three wind belts.
Understanding Jet StreamsDescribe what jet streams are, why they exist and where the midlatitude jet stream can be found. Also, discuss the polar front.
Rossby Waves & Their Influences on Cyclonic ActivityDescribe what Rossby waves are and how they influence cyclonic activity.
Description of Monsoons & Monsoonal CirculationsDiscuss what monsoons are and list two monsoonal circulations.
Air Conditions of Different Types of WindsDescribe air conditions of various types of winds, including Foehn, Chinook, Santa Ana and katabatic.
Air Conditions of Different Types of BreezesDiscuss air conditions of various breezes, including sea, land, valley and mountain.
The Relationship Between El Nino & La NinaDescribe the relationship between El Nino and La Nina.
The Characteristics of El Nino, La Nina & Walker CirculationDescribe El Nino, La Nina and the Walker circulation.
The Pacific Decadal Oscillation & its Similarity to El NinoDescribe Pacific Decadal Ossillation and its similarity to El Nino.
Arctic Oscillation and North Atlantic OscillationDescribe Arctic Oscillation and North Atlantic Oscillation.
Types of Air Masses & Their Effect on WeatherIdentify and describe the effect of air masses on weather.
Identifying & Describing Types of Weather FrontsIdentify and describe various types of fronts.

15 Lessons in Chapter 9: Air Distribution and Movement
Atmospheric Circulation: Scale & Observation

1. Atmospheric Circulation: Scale & Observation

Atmospheric circulation is responsible for the weather you experience. This lesson will explain how atmospheric circulation works and then it will explore how it impacts the weather in a couple of different locations.

The Single-Cell Model of General Circulation

2. The Single-Cell Model of General Circulation

Have you ever wondered how air circulates in the atmosphere? This lesson will explain an early model of air circulation, the single-cell model. It will also look at some of the problems with this early model of air circulation.

The Effects of Semi-Permanent Pressure Cells

3. The Effects of Semi-Permanent Pressure Cells

Although semi-permanent pressure cells don't sound particularly exciting, they actually are. This lesson will describe how pressure systems develop and examine four semi-permanent pressure cells.

Understanding Weather Fronts: Types & Their Effect on Weather

4. Understanding Weather Fronts: Types & Their Effect on Weather

In this video lesson you will learn about how air masses with different characteristics create weather fronts. You will also identify the different types of fronts, as well as what type of weather occurs along them.

The Global Wind Patterns of the Three Wind Belts

5. The Global Wind Patterns of the Three Wind Belts

You are familiar with wind, but did you know there are different wind belts depending on where you are on the earth? This lesson will examine the three main wind belts: polar easterlies, tropical easterlies and prevailing westerlies.

Jet Streams & the Polar Front

6. Jet Streams & the Polar Front

You've probably heard about jet streams during the news weather segment. But what is a jet stream? This lesson will explain how jet streams form, what they are and then will focus on the polar jet stream.

Rossby Waves & Cyclonic Activity

7. Rossby Waves & Cyclonic Activity

Chances are you've never heard of a Rossby wave, but these waves are important players in the weather patterns you observe on a daily basis. This lesson will explore Rossby waves and then we'll explain how Rossby waves are related to cyclones.

Monsoons & Monsoonal Circulations

8. Monsoons & Monsoonal Circulations

Monsoons bring a seasonal change in weather to many parts of the world. This lesson will explore two monsoonal circulations and will also discuss how monsoons impact the people who experience them.

Air Conditions of Different Types of Wind

9. Air Conditions of Different Types of Wind

Winds are all the same, right? Actually no. This lesson will examine different types of wind including the Chinook, a type of foehn wind, and the Santa Ana winds, a type of katabatic wind.

Air Conditions of Different Types of Breezes

10. Air Conditions of Different Types of Breezes

Breezes are light winds, but did you know there are different types of breezes? This lesson will examine sea, land, valley and mountain breezes, explaining how they form and where you can find them.

The Relationship Between El Nino & La Nina

11. The Relationship Between El Nino & La Nina

In this video lesson, you will learn about El Niño and La Niña. You will understand the differences between them, as well as some of their effects on both ocean waters and weather patterns on land.

El Niño, La Niña & Walker Circulation

12. El Niño, La Niña & Walker Circulation

This lesson will explore how the Walker Circulation works, as well as El Niño and La Niña. It will include how these weather patterns impact weather patterns around the world.

The Pacific Decadal Oscillation & El Nino

13. The Pacific Decadal Oscillation & El Nino

Understanding the Pacific Decadal Oscillation, or the PDO, and El Niño allows scientists to better understand weather phenomenon. This lesson explores the PDO, as well as its similarities with El Niño and La Niña.

Arctic Oscillation & North Atlantic Oscillation

14. Arctic Oscillation & North Atlantic Oscillation

You've probably never thought much about the Arctic Oscillation or the North Atlantic Oscillation, but these weather phenomena impact global climates. This lesson explores each oscillation and describes the weather patterns associated with them.

Types of Air Masses & Their Effect on Weather

15. Types of Air Masses & Their Effect on Weather

Air masses affect weather in a number of different ways. In this lesson, you will learn about the different types of air masses found on Earth and how the movement of air masses creates changes in the weather.

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