ATM OCN (Meteorology) 100
ATMOSPHERIC ENERGETICS:
PART I: HEAT, ENERGY AND ENERGY TRANSPORT
Summer 2000
Lecture # 4 scheduled for:
15 JUN 2000 (R)
Recommended Readings from Moran and Morgan (1997):
Pages 73-78; 33-64; 91-93.
Today's Lecture Objectives:
- To distinguish between energy and power.
- To identify the three basic mechanisms of energy transfer, describe how energy is transported by each mode and give an example of each transport mode.
- To distinguish between sensible heating and latent heating.
- To describe how temperature and heat are related through the specific heat of a substance.
- To explain the significance of wind-chill and to calculate wind-chill equivalent temperatures from values of ambient air temperature and wind speed, using the provided table.
Outline:
A. INTRODUCTION
B. ENERGY & POWER
- Definitions
- Importance
- Types of Energy (In the Atmosphere)
- Units
C. ENERGY EXCHANGE PROCESSES
- Conservation of energy
- Energy transport requirements
- Energy exchange or transport modes
- Conduction
- Convection
- Radiation
D. HEAT (or HEAT ENERGY)
- Definition
- Important considerations
- Sensible heat transfer
- Measurement of heat and thermal energy
- Latent heat
E. EXAMPLE -- WIND-CHILL
- Background
- Definitions
- Determination of Wind-Chill Equivalent Temperature
- Cold Stress -- Human comfort and safety
NOTE: This lecture continues as Atmospheric Energetics - Part II: Radiation
Last revision 20 June 2000 (0215 UTC)
Produced by Edward J. Hopkins, Ph.D.
Department of Atmospheric and Oceanic Sciences
University of Wisconsin-Madison Madison, WI 53706
hopkins@meteor.wisc.edu
URL: aos100/lectures/0004aeng.html