課程資訊
課程名稱
 地物流力
Geophysical Fluid Dynamics 
開課學期
 110-1 
授課對象
 理學院  海洋物理組  
授課教師
 陳世楠 
課號
 AtmSci7077 
課程識別碼
 229 M8340 
班次
  
學分
 3.0 
全/半年
 半年 
必/選修
 選修 
上課時間
 星期三6,7,8(13:20~16:20) 
上課地點
 大氣系A100 
備註
 總人數上限：30人 
Ceiba 課程網頁
 http://ceiba.ntu.edu.tw/1101AtmSci7077_GFD 
課程簡介影片
 
核心能力關聯
 本課程尚未建立核心能力關連
課程大綱
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課程概述

***** 對這門課有興趣但是初選沒選上的同學：請寄 email 給我，告訴我你是誰，我會先把你加入修課名單（so that you would get the zoom link for the 1st class) *****

This is an upper-level undergraduate and graduate-level course on geophysical waves and instability. We will focus on slowly evolving flow that is nearly in geostrophic balance and thus satisfies the “Quasi-geostrophic (QG) approximation”. The primary subjects are:

1. Quasi-geostrophy
2. Rossby wave
3. Baroclinic instability
4. Introductory wave-mean-flow interaction + Geostrophic turbulence

The course format is a combination of lectures and student project, with student-led presentation/ discussion.

Examples of the student projects can be found at
http://cod-lab.blog.ntu.edu.tw/teaching/
 

課程目標
 The objectives are to provide students with opportunities to develop a deeper understanding for classic GFD problems, through hands-on projects, discussions, and lectures. 
課程要求
 Oral presentation and discussion participation
建議先修大氣動力學一二

評量方式：
Three projects, oral presentation, and course participation 
預期每週課後學習時數
  
Office Hours
  
指定閱讀
 待補 
參考書目
 TEXT1: Essentials of Atmospheric and Oceanic Dynamics (called T1 hereafter)
REF1: Atmospheric and Oceanic Fluid Dynamics by Vallis (2nd Ed.) (called R1)
An electronic version of R1 is available from the library.
 
評量方式
(僅供參考)
    
課程進度
週次
日期
單元主題
第1週
   Course introduction: why studying Rossby waves, instabilities, and wave-mean-flow interactions? 
第2週
   Review of shallow-water systems (momentum and mass conservation, vorticity equation, PV, and circulation theorem) 
第3週
   1. Circulation theorem & PV
2. Review of shallow-water waves (SW gravity, inertio-gravity waves; Kelvin; Rossby wave is left for later) 
第4週
   Review of shallow-water waves (SW gravity, inertio-gravity waves; Kelvin; Rossby wave is left for later) 
第5週
 10/20  1. Geostrophic adjustment
2. Shallow-water quasi-geostrophic equations & invertibility 
第6週
 10/27  Shallow-water QG and Rossby wave
1. Dispersion relation, PV gradient
2. Phase and energy propagation 
第7週
 11/03  1. Continuously stratified QG
2. Baroclinic instability I: Eady model  
第8週
 11/10  Project 1:
Rossby wave from an oscillatory source (Haidvogel & Rhines 83)
Stationary Rossby waves 
第9週
   Baroclinic instability II: Eady model
1. Growth rate, wave modes, and vertical structure
2. Physical interpretations via Rossby wave interactions 
第10週
   Baroclinic instability III
1. Phillips problem and Beta effect
Barotropic instability & Stability criterion (informal look) 
第11週
   Introduction to 2D turbulence
1. Inertial range --- Kolmogorov spectrum
2. Energy & enstrophy conservation
3. 3D vs. 2D and QG analogies  
第12週
   Project 2: Simulations of Eady and Phillips problems
 
第13週
   Wave-mean-flow interaction I (in 2D flow)
1. Motivations: observations of surface westerlies
2. Eddy vorticity flux ---- Taylor identity & link to circulation theorem
3. Psudomomentum & non-acceleration theorem
 
第14週
   Lab experiments or Paper discussion (TBD) 
第15週
   Wave-mean-flow interaction II (in continuously stratified QG flow)
1. Eliassen–Palm flux & Rossby wave propagation
 
第16週
   Wave-mean-flow interaction III
1. Transformed Eulerian mean (TEM): Eulerian vs residual circulation
2. Eddy form stress 
第17週
   Project 3 : Zonal jet formation via stochastic forcing