Lecture10_Ideal_Gas (1) - EAS 1600 Introduction to...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
EAS 1600 Introduction to Environmental ciences Sciences Class 10 - Ideal Gas Law, Barometric Law In this class we begin a discussion of g atmospheric dynamics and its role in determining the climate. Atmospheric gp dynamics focuses on the motion of air and the resultant weather and climatic phenomena . In the last section on the energy budget, the First Law of gy g , Thermodynamics underpinned our discussion. In this section we call on: (i) () the kinetic theory of gases ; and (ii) Newton’s Second Law (i. e., F = ma). (, ) oday we will begin by showing why we Today we will begin by showing why we need to worry about atmospheric ynamics’ le in the imate and then dynamics’ role in the climate , and then we will review some basic concepts about the nature of a gas and the properties of atmospheric gases under the influence of a gravitational field. We need to consider dynamics because -- An inspection of the diative energy balance radiative energy balance of the earth as a function of latitude indicates an b l T h i imbalance. There is an energy excess in the tropics and a deficit at high latitudes . Maybe dynamic processes (e.g., inds etc) move energy winds, etc) move energy from tropics to poles and thus create a balance at l l tit d all latitudes. ..
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
An ideal gas is -- a gas that obeys the ideal gas law which is a mathematical relationship that governs the pg gas’ so-called ‘state variables’: Temperature p Pressure Density Temperature A measure of the amount of internal energy (or heat) a substance contains. The energy is indicated by the random movement of the molecules at make up the substance that make up the substance. The more energy contained in a substance, the greater the velocity of the molecules, and in turn the greater the temperature. t i i f t h k i t i Temperature is a macroscopic measure of the average kinetic energy contained in the molecules of a given substance {Avg KE} = ½ m v avg 2 = k B T g Where v avg = average random molecular velocity = Boltzmann’s constant = 1.38 x 10 -23 K/molecule k B Boltzmann s constant 1.38 x 10
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/15/2012 for the course EAS 1601 taught by Professor Lynch during the Spring '08 term at Georgia Institute of Technology.

Page1 / 5

Lecture10_Ideal_Gas (1) - EAS 1600 Introduction to...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online