Predictions of complex system like weather and economy are widely conducted today. Among them, prediction based on mathematical modeling plays an important role.
By reading some chapters of the textbook written by David Orrell: Apollo’s Arrow: The Science of Prediction and the Future of Everything (2007), this lecture examines the history of science of prediction with mathematical modelling, especially on weather and climate.
By tracing the concrete history of prediction science, the lecture aims at deepening the students' understanding of prediction science, especially about its effectiveness and its limit, from mathematical point of view.
1) To grasp roughly the historical development of prediction science of complex system, especially of weather and climate, by referring to some mathematical concepts like "sensitivity to initial condition," "modeling error," and "computational irreducibility."
2) To learn that a prediction of phenomena described by deterministic equation was considered easy at first, but later it turned out to be more difficult than expected.
3) To understand that it is difficult for a new proposition which challenges the existing paradigm to be accepted.
Complex system, Chaos, Science of prediction, Sensitivity to initial condition, Sensitivity to parameterization, Model error, Computational irreducibility, Paradigm, Research school, Acceptance of a new proposition.
Specialist skills | ✔ Intercultural skills | Communication skills | Critical thinking skills | Practical and/or problem-solving skills |
The lecturer summarizes important discourses of the Chapter 3 and 4 and of some sections of chapter 7 of the textbook, using slides.
After the class, students write comments for the class in "Reaction Paper" and submit it to OCWi.
Course schedule | Required learning | |
---|---|---|
Class 1 | Orientation and Introduction. After explaining the lecture plan and the evaluation of grades, the lecturer makes elementary explanation of chaos and complex system. | To understand roughly the concept of chaos and complex system. As preparation for the next class, students are required to read Appendix I to III, in addition fo Chapter 3. |
Class 2 | Reading of Chapter 3 ("Divide and Conquer: The Gospel of Deterministic Science") (1st half) | We trace the successful and straightforward progress of deterministic science before the recognition of “chaos” and “complex system.” |
Class 3 | Reading Chapter 3 (2nd half). We tarce the anguished history of science of prediction after the recognition of “chaos” and “complex system (with emergent properties).” | Students understand what is “chaos” where prediction is difficult due to sensitivity to initial conditions. They also understand what is “complex system (with emergent properties)” whose exact prediction is “essentially impossible.” |
Class 4 | Reading of Chapter 4 ("Red Sky at Night: Predicting the Weather") (1) (Early sections) | We trace briefly the development of mathematical modeling in the early history of weather forecast. |
Class 5 | Reading of Chapter 4 (2) (Middle Sections). We trace the history of weather forecast in the age of computer. | We look back the beginning of GCM (General Circulation Model or Global Climate Model), Edward Lorenz' emphasis on chaos nature, etc. |
Class 6 | Reading of Chapter 4 (3) (Late sections). We trace the history of efforts to identify the cause of the prediction error. | We learn that the error of the weather forecast is less due to the sensitivity to initial condition than the error of the modeling itself (“model error”). We also understand why meteorologists were prone to attribute the cause of prediction error to the sensitivity to initial condition. |
Class 7 | Reading of some sections of Chapter 7 which are related to Global Warming. | We deepen our understanding of what and to which extent we can tell about the future Climate Change. |
To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.
David Orrell (2007), Apollo’s Arrow: The Science of Prediction and the Future of Everything, Harper Perennial.
Students are not forced to buy it. For those who don't buy it, photocopy of Chapter 3 and 4, and a part of Chapter 7 will be distributed through OCWi. (Redistribution is prohibited.)
We don't request cooperative selling of the textbook to the university's COOP. If you want to buy textbook, purchase it by yourself personally.
Reading relevant literature referred in the textbook is highly recommended. Precise information of the literature is listed in the bibliography of the textbook.
Class participation 40%, Mid-term Report 20%, Term Essay 40%.
Class participation score is evaluated mainly based on "Reaction Paper" submitted after each class.
Rough instruction of the Mid-term Report and the Term Essay will be given in the 1st class. Detailed instructions of them will be given in later classes.
Students need to have experience of learning calculus and linear algebra.
No classes will be given on April 13 (Wed).
Seven total classes will be held for this course: April 20 (Wed), April 27 (Wed), May 11 (Wed), May 18 (Wed), May 25 (Wed), June 1 (Wed), June 8(Wed).