MEA chapter 3 notes

MEA chapter 3 notes - Chapter 3: Temperature For the...

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Unformatted text preview: Chapter 3: Temperature For the Record: Air Temperature Data Air temperature is measured at thousands of locations worldwide using a variety of thermometers.- Daily Mean:- Daily Range: - Monthly Mean:- Annual Mean:- Annual Range: In order to examine the distribution of temp. on maps, we use: lines indicating equal ( iso ) temperature ( therms ) (Fig 3.2). Why Temperatures Vary: The Controls of Temperature Latitude (which determines the amount of solar radiation received) is the major controller of temperature (as seen in Figure 2.9). There are however other controls:- ---- Land and Water Land surfaces heat more rapidly and to a higher temperature (daytime) and cool more rapidly and to a lower temp. (nighttime) than do water surfaces (Fig. 3.3), because: 1) 2) 3) The Specific Heat [def: as t he amount of heat needed to raise the temperature of 1 gram of a substance 1 o C ] of water is 3 times greater that the specific heat of land; as a result: Figs 3.4, 3.5;Table 3.1 illustrate that: Oceans act as regulators of temperature : keeping coastal areas:-- when compared to mid-continent locations. Ocean Currents Greatly influence temps. because of their ability to transport warm water towards the poles and cold water towards the equator. (Figs. 3.7, 3.8) Examples: The Gulf Stream , with temp. between 75-85 o keeps: The California Current , with temp. between 45 o 55 o keeps: Altitude Recall from Chapter 1 that temperature generally decreases...
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This note was uploaded on 03/20/2008 for the course MEA 130 taught by Professor Eder during the Spring '08 term at N.C. State.

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MEA chapter 3 notes - Chapter 3: Temperature For the...

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