GC 170 1st Edition Lecture 9 Outline of Last Lecture I Greenhouse affect a IR Bands b No Greenhouse gases I Energy Budget a Balance between incoming outgoing b Balance budget definition c Albedo i High Low d 30 rule Outline of Current Lecture II Energy Budget and phase changes a Incoming outgoing energy i Reflected Absorbed b Greenhouse gases i Warmer Temp ii Melting Ice caps c Convection in atmosphere III States of matter a Warm cold b Cold warm IV Definition of Latent Heat a Example of dry desert Current Lecture I II Group Activity Energy Budget and phase changes a Planetary energy balance represents i Complex sustem of incoming and outgoing radiation ii Mostly balances at the top of the atmosphere iii Fairly constant temperature b Average amount of incoming solar radiation 342 W m2 c Incoming solar energy i Reflected 1 Clouds 23 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 d e f g h 2 Surface 7 ii Absorbed 1 Surface 47 2 By atmosphere UV 22 Outgoing radiation i Radiated upwards 1 Gas and clouds 58 2 Surface radiation radiated up 116 ii Radiated downwards 98 iii Passes through atmosphere 12 What happens with increased greenhouse gases i Warmer surface temp ii Melting ice iii Increases absorption of solar radiation Convection in the atmosphere i Circulates heat around troposphere 1 Air is warmed 2 Becomes less dense and rises 3 Cooler air sinks and replaces States of matter i Phase change the transition between different states 1 Ice liquid water water vapor 2 Substance warms of cools heat changes and can be felt but phase change energy is absorbed or released from environment during phase change a Latent Heat b Warming energy is absorbed making surroundings cooler 3 Evaporation makes environment cooler water to warm environment 4 Condensation water vapor transitions into water making the molecules slow down and release heat Dry desert has no latent heat i Cold continent no evaporation 1 Latent energy greatest over oceans warmer than the land surface
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