ATM OCN (Meteorology) 100

Summer 2001

Lecture # 4 scheduled for:

21 JUN 2001 (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
• Energy units
• Power 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 4 June 2001 (0215 UTC)

URL: aos100/lectures/s0104aeng.html