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# ATMOSPHERIC DYNAMICS ATMO 336

Texas A&M

GPA 3.65

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This 3 page Study Guide was uploaded by Demarcus Schaden V on Wednesday October 21, 2015. The Study Guide belongs to ATMO 336 at Texas A&M University taught by J. North in Fall. Since its upload, it has received 33 views. For similar materials see /class/225939/atmo-336-texas-a-m-university in Atmospheric Sciences (ATM S) at Texas A&M University.

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Date Created: 10/21/15

Atmospheric Sciences 336 Fall 2007 Final Exam Notes The Rules Each student can bring one and a half pages of cheat sheet to the exam And you can use these pages however you like For instance7 you could bring the two half pages from the previous two exams and then add a new half page for the material covered since exam 2 Or you could start over from scratch Your call Some Topics Not Covered The following subjects will not be tested by the exam at least not explicitly o Thermodynamics equations of state7 the 1st law7 speci c heats7 the adiabatic constant and potential temperature 0 Math review topics the Taylor series7 integration in 2D7 the scalar and vector products7 path integrals7 etc 0 Material from the labs But of course in many cases you still need to know this stuff for other thingsifor instance7 to compute the circulation you would typically need to compute a path integral And keep in mind that most of the lab material overlaps with lecture stuff So it certainly wouldn7t hurt to at least brie y go through the labs Words to the Wise Make sure to review 0 Anything missed on the rst two exams Many of the concepts tested on the nal will be the same concepts covered on exams 1 and 2 o Vectors7 vectors7 vectors Much of what we covered in the second half of the course depends on a solid understanding of vectors So go back through the vector review7 break out the calculus book7 call your old math prof7 spend some time with wikipedia whatever it takes New Stuff The exam will be slightly weighted towards the material covered since the last examispeci cally7 the material from geostrophic balance to the Eulerian and Lagrangian time derivatives And yes7 the exam does cover the material from the last several lectures To outline the main topics 0 The approccirnate force balance for large scale flows This is certain to show up on the exam7 and probably more than once Why does the jet stream blow from west to east Why does the circulation above a cold core high become less anti cyclonic with height Look at the examples from lecture and it certainly wouldn7t hurt to look at the last lab7 either The balance conditions in pressure coordinates Why is knowing the pressure as good as knowing the height for large scale ows7 at any rate How is the horizontal pressure gradient related to the slope of a pressure surface How is the geostrophic wind vector related to the contours of constant height on a pressure surface 0 Mass transport across a surface Make sure you understand the basic concepts behind the continuity equation Suppose you have a rectangle of area AxAz oriented perpendicular to the y axis At what rate does uid mass cross this rectangle Older Material Some notes on older material 0 The hydrostatic balance and hydrostatic pressure will surely show up in some form The various guises covered include i the constant density or ocean form 7 the variable density or atmosphere form 7 the hypsometric equation Make sure you know how to nd the pressure given the corresponding temperature or density pro les And be sure to understand the temperature thickness relation 0 Static stability You7ve already had a pick your poison problem on this so it probably wont show up as a long question But it could show up as a short question Make sure you understand the general conceptsithat is how the stability is related to the net restoring force on a disturbed particle 0 Relative motion near a point We spent a lot of time reviewing velocity gradients and the associated kinematic quantities So this will probably show up once or twice Some things to review 7 Given information about the velocity gradients make sure you can sketch a consistent ow eld eg problem 3 from homework 3 7 Make sure you could derive a ow eld given the four kinematic quantities ie vorticity divergence and the two deformations Be sure you know how the kinematic properties relate to changes in size shape and orientation of a particle o Vorticity and circulation This was conspicuously absent from exam 1 so I suspect it7ll raise its ugly head this time around Be sure that given a simple ow eld and a simple path you could compute the circulation For the exam l7ll only give straight line pathsino circles And of course review the relationship between circulation and vorticity o Streamlines streamfunctions and trajectories Be sure you understand the relationship between streamfunctions and streamlines and ii the difference between streamlines and trajectories o Rotating coordinates Between the homeworks problem set 5 and the labs you7ve done a couple of rotating coordinate examples So l7d expect something similar on the nal Make sure you understand the rotating coordinate transformation that gets you from the inertial to the rotating coordinates o The centrifugal force and gravity Make sure that you understand the difference between Newton7s gravitation and what we typically refer to as gravity Which is perpendicular to the Earth7s surface And why 0 Simple circular motion Review the de nitions of scale in terms of the Rossby nurnber7 as well as the geostrophic wind relations for the high and low pressure cases Other Stuff Of course l7ve probably forgotten something So your safest bet is to study everything See you Monday

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