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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 Craig Epifanio in Fall. Since its upload, it has received 55 views. For similar materials see /class/225943/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 2008 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 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 the equation of state is used for all kinds of things 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 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 reviewmaybe even break out the old calculus book if you have to New Stuff The exam will de nitely be weighted towards the material covered since the last examispeci cally7 the material from the Coriolis force to the conservation of mass And yes7 the exam does cover the material from the last several lectures To outline the main topics 0 The Coriols force Review both the general vector form as in problem 3 of homework 7 and the approximate form in local coordinates as in problem 5 of homework 7 And maybe spend a couple of minutes thinking about our friends in the Southern Hemisphere 0 Simple circular motion Review the de nitions of scale in terms of the Rossby number andor the time scale7 as well as the geostrophic wind relations for the high and low pressure cases 0 The PGF arid the geostrophie winds on a pressure surface How is the horizontal pressure gradient related to the slope of a pressure surface How is the geostrophic wind related to the contours of height on a pressure surface When is the geostrophic wind on a pressure surface larger and when is it smaller o The geostrophic and hydrostatic balance Two great balances that go great together Why does the jet stream blow from west to east Why does knowing the temperature distribution allow you to compute the geostrophic winds aloft Review problem 3 from the last homework and it certainly wouldn7t hurt to look at the last lab either 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 long problem on this from exam 1 so it probably wont show up as a long question again 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 1 from homework 4 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 the rst two exams 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 1711 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 The material derivative Keep in mind the difference between an Eulerian derivative and a Lagrangian derivative And know how to get one from the other Basic concepts from the labs The physical content from the labs mostly overlaps with the lecture material so reviewing the lecture notes should be suf cient Although it wouldnt hurt to ip through the labs of course But do keep in mind some of the basic techniques from the labs For instance given a pressure distribution on a grid how would you approximate a derivative Or given a set of temperature observations in the vertical how would you approxirnate an integral Other Stuff Of course l7ve probably forgotten something So your safest bet is to study everything See you Monday

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