Lecture 8 Outline - Chapter 8: Climatic Zones and Types...

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Sheet1 Page 1 Chapter 8: Climatic Zones and Types CHAPTER OUTLINE I. Climatic Classification A. Temperature and precipitation are generally chosen as the most significant and understandable features of climate when narrowing down climatic characteristics to classify. B. The Purpose of Classifying Climates 1. Provides a useful learning tool. C. Early Classification Schemes 1. Greeks suggested five climatic zones: a) Two temperate (one in either hemisphere, in midlatitudes), two frigid (one in either hemisphere, further north and south of midlatitudes), and one torrid (in tropics). 2. Today, we also have five climatic zones: c) Subtropical warm temperate d) Midlatitude cool temperate e) High-latitude cold (1) Two temperate zones differ primarily in whether summer or winter is the dominant season. f) Some further divide this scheme, relying primarily on natural vegetation as the principal climate indicator. II. The K ppen Climate Classification System A. K ppen system a climatic classification of the world devised by Wladimir K ppen. 1. Most widely used climatic classification system. 2. Its database uses only the mean annual and monthly values of temperature and precipitation, used in a variety of ways. a) Four of five zones are defined by temperature characteristics (1) Each of five zones is subdivided according to various temperature and precipitation types. a) Equatorial warmhwet b) Tropical hothdry
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Sheet1 Page 2 3. Some deficiencies, constantly being used as springboard for new systems of classification. B. The Modified K ppen System 1. Modified K ppen System encompasses the basic design of the K ppen system but with a variety of minor modifications. a) One such system is used in this book: (1) Uses K ppen s five major climatic zones, but adds a sixth zone: C. Climographs specific weather station. a) Probably most useful tool for studying world climatic classification: (1) Display precise details of important aspects of the climate of a specific place (2) Can be used to classify the climate of that place. III. World Distribution of Major Climate Types A. Text examines three questions: 1. Where are the various climatic types and subtypes? 1 2. What are the characteristics of each? 3. What are the main controls of these climates? (a) Highland climateshhigh-elevation climates. 1. Climographhsimple graphic representation of monthly temperature and precipitation for a
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Sheet1 Page 3 B. Tropical Humid Climates (Group A) 1. Only truly winterless climates of the world. 2. Latitudinal location molds the fundamental character of Zone A climates. coastal lowlands some mountain or small regions of aridity. 3. Prevalence of moisture: a) Much of zone A among wettest in the world. (1) Abundant sources of moisture and abundant mechanisms for uplift.
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Lecture 8 Outline - Chapter 8: Climatic Zones and Types...

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