The DPO JOA Examples

The DPO JOA Examples are indexed by DPO Chapter number. Please select one of the DPO chapters numbers from the list below to begin the DPO JOA Examples for that chapter, or click on one of the exercises or lessons within each chapter.

chapter one
Introduction to descriptive physical oceanography

No Exercises for Chapter 1

chapter two
ocean dimensions, shapes and bottom materials

Example 2A - Dimensions

Exercise 2A-01: First Things First - Start Joa and Set Joa Preferences
Exercise 2A-02: Ocean Maps - Making a Mercator Map

Example 2B - Sea Floor Dimensions

Exercise 2B-01: Ocean Maps - Map Units and Dimensions
Exercise 2B-02: Ocean Maps - Plot Your City's Location
Exercise 2B-03: Ocean Maps - Examining the World Ocean
Exercise 2B-04: Ocean Maps - Analyzing Mercator Projections

Example 2C - DPO Extra Topic: Bathymetry

Exercise 2C-01: Bathymetry - Illustrating Bathymetry
Exercise 2C-02: Bathymetry - Configuration of the Ocean Bottom

Example 2D - DPO Extra Topic: Map Projections

Exercise 2D-01: Map Projections - Analyzing Different Map Projections
Exercise 2D-02: Map Projections - Polar Projections

Example 2E - DPO Extra Topic: Making a .joa file

Exercise 2E-01: Ocean Maps - Plot Your City's Location
chapter three
Physical properties of seawater

Example 3A - Before we get started

Exercise 3A-01: Seawater Properties - The JOA Data Window

Example 3B - Properties of Seawater

Exercise 3B-01: Seawater Properties - Property-Property Plots
Exercise 3B-02: Seawater Properties - Examining Property-Property Plots
Exercise 3B-03: Seawater Properties - Potential Temperature and Sigma-0
Exercise 3B-04: Seawater Properties - Multiple-X-axis JOA Property-Property Plot

Example 3C - Effect of Temperature and Salinity on Compressibility

Exercise 3C-01: Seawater Properties - Compressibility

Example 3D - Static Stability and Brunt Väisälä Frequency

Exercise 3D-01: Seawater Properties - Stability

Example 3E - Sound in the Sea

Exercise 3E-01: Seawater Properties - Sound Speed
chapter four
Typical Distributions of Water Characteristics

Example 4A - Before we get started

Example 4B - Surface properties of world ocean waters

Exercise 4B-01: Data Files - Importing a Spreadsheet
Exercise 4B-02: Surface Properties - Making a Lambert Azimuthal Equal Area Map Plot
Exercise 4B-03: Surface Properties - Examining Lambert Azimuthal Equal Area Map Plots

Example 4C - Vertical distribution of water properties along south-to-north transects

Exercise 4C-01: Vertical Sections - Making a Contour Map Plot
Exercise 4C-02: Vertical Sections - Examining Contour Map Plots

Example 4D - Vertical distribution of water properties along south-to-north transects

Exercise 4D-01: Vertical Sections - Making a CFC Contour Plot
chapter five
Mass, salt, and heat budgets and wind forcing

No Exercises for Chapter 5

chapter six
Data analysis concepts and observational methods

Example 6A - Vertical Axis Other Than Pressure

Exercise 6A-01: Vertical Sections - Contour Plots with Sigma-0 as the Vertical Axis
Exercise 6A-02: Vertical Sections - Making a Property-Property Plot with Nitrate and Phosphate
Exercise 6A-03: Vertical Sections - Making a Phosphate Based Interpolation Surface
Exercise 6A-04: Vertical Sections - Creating a Custom Color Bar

Example 6B - Data Analysis, Reduction, and Presentation

Exercise 6B-01: Exercise 6B-01: Other Plots - Using Time as the X-axis

Example 6C - Exploiting some of JOA's Mapping Features

Exercise 6C-01: 6C-01

Example S6A - Before we get started

Example S6B - A Vertical Profile Visualized from CTD, Bottle, and Multi-year Averaged Data

Exercise S6B-01: Comparing Data - Opening Multiple Files in a JOA Window
Exercise S6B-02: Comparing Data - Plotting Multiple Parameters Against Pressure
Exercise S6B-03: Comparing Data - Potential Temperature Versus Salinity in CTD Data

Example S6C - A Vertical Section Visualized from CTD, Bottle, and Multi-year Averaged Data

Exercise S6C-01: Comparing Data - Multiple Data Types
Exercise S6C-02: Comparing Data - Visualizing Data With a Custom Color Bar
Dynamical processes for descriptive ocean circulation

Example 7A - Before We Get Started

Example 7B - Dynamic Topography Maps

Exercise 7B-01: Making a Dynamic Topography Map
chapter eight
Gravity waves, tides and coastal oceanography

No Exercises for Chapter 8

Example Intro-A - Before we get started

Example Intro-B - Introduction to JOA Maps

Example Intro-C - Extracting Data Subsets from Map Plots & Advanced JOA Tools for Working with Basin-Scale Data Sets

Exercise Introc-01: map plots - how-to: extracting data subsets
Exercise Introc-02: map plots - how-to: editing data subsets

Example Intro-D - Using Data Subsets & Advanced JOA Tools

Exercise Introd-01: map plots - using data subsets
Exercise Introd-02: using far-field interpolation to enhance contour plots made from sparse data
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