08A ATMO 435-500 Epifanio - Atmospheric Sciences 435...

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Unformatted text preview: Atmospheric Sciences 435 Dynamic and Synoptic Meteorology Spring 2008 Time and Place: 9:10410z00 MWF, 203 0&M Instructor: Prof. Craig Epifanio, 1017B 085M Building, 845—9224, [email protected] Oflice Hours: 1:004:00 MW, 3:0lk4z00 R Description: ATMO 435 is the second of a two-course sequence presenting an introduction to fluid motions in the atmosphere. The present course is divided roughly into three main parts. The first part explores wave motions in the atmosphere, with hydrostatic surface waves, internal gravity waves and barotropic Rossby waves used as examples. Part 2 is an introduction to atmospheric turbulence, with particular applicatiOn to the atmospheric boundary layer. The final part explores the large—scale baroclinic motions that modulate our day—to—day weather. Homework: Problem sets will be assigned roughly weekly. You are encouraged to work together in groups to solve the problems. HoWever, please make sure that your presentation of the problem reflects your understanding of the solution. Plagiarism—mindlessly adopting another’s words or ideas as if they were your owniw-ill be penalized. Grading: Roughly weekly problem assignments (20%), two iii-class exams (25% each), and a final exam (30%) Texts: The course loosely follows the required text: An Introduction to Dynamic Meteorology, by James R. Holton. Course Outline: Section numbers from Holton are given in brackets. I. Review and other preliminaries A. The equations of motion in local coordinates B. Scaling the continuity equation: the anelastic and incompressibility approximations C. The Boussinesq approximation [5.1.1] II. Waves in geophysical systems 'A. Review: waves and wave parameters B. Surface gravity waves 1. Shallow—water gravity waves with rotation [7.3.2 + rotation] Basic states and linearization 2. Fourier decomposition [7.2.1] 3. Dispersion and group velocity [7.2.2] B. Internal gravity waves [7.475] C. Barotropic Rossby waves [7.7] III. The atmospheric boundary layer A. Basic turbulence concepts 1. Reynolds averaging [5.1] 2. Energy conversions in turbulent flows [5.2] B. Models of turbulence in the atmospheric boundary layer [5.3] C Effects on the free atmosphere: Ekman pumping [5.4] IV. Quasi—geostrophic analysis for large-scale flows A. The observed structure of baroclinic waves [6.1] B. Equations of motion in isobaric coordinates [3.1] C. The quasi—geostrophic approximation 1. Approximate equations for large-scale flows [6.2.1] 2. Quasi—geostrophic vorticity and wave propagation [6.2.2] 3. Geopotential tendency and quasi—geostrophic potential vorticity [6.3] 4. Diagnosis of vertical motion: the omega equation and Q vectors [6.4] D. Conceptual model of a baroclinic wave [6.5] V. Further topics A. Frontogenesis and the semi—geostrophic approximation [9.2] B. Baroclinic instability: the two—layer model [8.2] 1. Linear instability theory and complex phase speeds ADA Policy Statement ‘ The Americans with Disabilities Act (ADA) is a federal antidiscrimination statute that provides comprehensive civil rights protection for persoris with disabilities. Among other things, this legislation requires that all students with disabilities be guaranteed a learning environment that provides for a reasonable accommodation of their disabilities. If you believe you have a disability requiring accommodation, please contact the Department of Student Life, ' Services for Students with Disabilities, in Room 126 of the Koldus Building, or call 845—1637. Copyright and Plagiarism Policy All materials used in this class are copyrighted. These materials include but are not limited to syllabi, quizzes, exams, lab problems, in—class materials, review sheets, and additional problem sets. Because these materials are copyrighted, you do not have the right to copy them unless permission is expressly granted. As commonly defined, plagiarism consists of passing off as one’s own the ideas, words, writings, etc., which belong to another. In accordance with this definition, you are committing plagiarism if you copy the work of another person and turn it in as your own, even if you should have the permission of that person. Plagiarism is one of the worst academic Sins, for the plagiarist destroys the trust among colleagues without which research cannot be safely communicated. If you have any questions regarding plagiarism, please consult the latest issue of the Texas A&M University Student Rules, —rules.tamu.edu/, under the section titled ‘Scholastic Dishonesty’. ‘ Honor Code Statement Aggies do not lie, cheat, or steal, nor do they tolerate those who do. Instances of scholastic dishonesty will be treated in accordance with Section 20 of the TAMU Student Rules. Please inform yourself on the student rules regarding cheating, plagiarism, fabrication of information, and conspiracy at the website fl ...
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