CS499 Senior research project Implementation note Climate simulation using Nonlinear dynamics Shin. Jeongkyu, Dept. of Physics, POSTECH Leading Prof. Kim. Daejin

2 Progress Make a controlled environment that have some fluctuations like weather in nature (~4.13) Do an experiment about some situations.(~4.20) Make new simple equations for explaining.(~4.30) Write a program that can simulate those situations using new theory and equations.(~5.13) → 5.29 Make a tutor program and manual.(~5.30) → 6.9 Weather forecast simulation using Nonlinear dynamics

3 Design Revised Program structure  Calculation part (80% done.)  Printing part (50% done.)  User Interface part (Still in progress) Weather forecast simulation using Nonlinear dynamics Calculation part User Interface part Printing part ParametersResult data (Figure, raw data, ETC…)

4 Implementation Note(1) Calculation Part Calc(Period)  Receive parameters and calculate.  100% implemented.  Subfunctions Solarconst.(days) Daylength(days)  Also contains printing part (plot data directly)  Found that it is TOO SLOW. Need to enlarge the time gap option. Weather forecast simulation using Nonlinear dynamics

5 Implementation Note(2) Printing part  Included in the calc()  Plot data directly to the ‘figure’ marked area.  Implemented but needs to import to the GUI.  Extra implementation available : Bifurcation diagram at the same screen / separately. Weather forecast simulation using Nonlinear dynamics

6 Implementation Note(3) User Interface part  Not implemented yet.  Main part is still in progress Weather forecast simulation using Nonlinear dynamics

7 Demonstration Weather forecast simulation using Nonlinear dynamics Fig. 2 Console mode Simulator (BETA TEST) and Figure control.

8 Reference Steven H. Strogatz. Nonlinear dynamics and chaos, 1 st ed. Westbook press, 2000, Part III.(chaos) Weather forecast simulation using Nonlinear dynamics