This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Chapter 5: Global Temperatures I. Temperature Concepts and Measurement I.a. Heat vs. Temperature I.a.i. Heat : a form of energy that flows from one system or object to another because the two are at different temperatures I.a.ii. Temperature : a measure of the average kinetic energy (motion) of individual molecules in matter I.a. Temperature Scales I.b. Measuring Temperature I.a.i. Thermistor : measures temperature by sensing the electrical resistance of a semiconducting material I.a.ii. Daily Mean Temperature : average daily minimum-maximum reading I.a.iii. Monthly Mean Temperature : total of daily mean temperature for the month divided by the number of days in the month I.a.i. Annual Temperature Range : expresses the difference between the lowest and highest monthly mean temperatures for a given year I. Principal Temperature Controls I.a. Latitude I.a.i. Insolation : incoming solar radiation/ the most important influence on temperature variations I.a. Altitude/Elevation I.a.i. As atmosphere thins, it loses ability to absorb/radiate sensible heat (why mountainous areas experience lower temperatures I.a.ii. At higher altitudes, the temperature range between day and night is greater than at lower elevations b/c surfaces both gain and lose energy rapidly to the thinner atmosphere I.a. Cloud Cover I.a.i. Approx. 50% of Earth is covered by clouds at any moment I.a.i. Clouds moderate temperature- cloud moisture reflects and absorbs...
View Full Document
- Fall '11