MTEOR 206 1nd Edition Lecture 6 Outline of Last Lecture I. Energy and The SeasonsOutline of Current Lecture I. Seasons In The Southern HemisphereII. EnergyIII. Energy and TemperatureIV. Energy and Heat TransferV. Latent HeatCurrent LectureI. Seasons In The Southern Hemispherea. Opposite timing of Northern hemisphereb. The Southern hemisphere is closer to the sun in the summerc. There is less land and more water in the Southern hemispherei. 81% water in the Southern hemisphere compared to 61% in the NorthernhemisphereII. Energya. Physics definition of energy: the capacity to do worki. Work = force x displacementb. Potential energy: the ability to do workc. Kinetic energy: any moving substance possesses energy of motiond. Heat energy: atoms and molecules that comprise all matters have kinetic energy due to their motione. Radiant energy: the most important form of energy in terms of weather and climate is the energy we receive from the sunIII. Energy and Temperaturea. The temperature of the air is a measure of the average kinetic energy of its moleculesb. Warm air is less dense than cold airIV. Energy and Heat Transfera. Heat is energy in the process of being transferred from one object to another due to temperature differenceb. After heat is transferred, it is stored as internal energyc. Three methods of heat transfer in the atmosphere:These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.i. Conduction: the transfer of heat from molecule to molecule within a substance1. Always flows from warmer to cooler regions2. Air is a very poor conductor of heatii. Convection: the transfer of heat by the mass movement of a fluid (i.e. water or air)1. Convection circulation: warm air expands and rises then cools and sinksiii. Radiation: i.e. the sun’s rays directly warming the Earth’s surface1. Sun’s rays warm the surface through radiation, the ground warms the air touching it through conduction, then that air heatsthe rest of the atmosphere by convection V. Latent Heat: the heat energy required to change a substance, such as water, from one state to anothera. Evaporation: a cooling process due to absorption of latent heatb. Condensation: a warming process due to a release of latent heati. Evaporation takes heat from the atmosphere, while condensation releases heat into the atmospherec. Sensible heat: heat that you can