1. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 1 Interactive Chesapeake Bay Simulation Jessica R. Crouch Yuzhong Shen Jay A. Austin Michael S.Dinnman Authors: Hector M. Garcia Presented By:

2. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 2 Problem Scientific grade numerical models play a significant role in oceanographic research. Numerical models represent ideal teaching tool but out of reach as such. Create visualization tool that combines ease of use + full numerical model

3. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 3 Motivation To make numerical models a teaching tool accessible in the classroom. Students to engage in active learning by using the models themselves. Computer simulations with manipulable models can foster inquiry based learning.

4. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 4 Relevance Numerical models enable forecasting and the ability to perform virtual experiments impossible to perform in reality. Provide the ability to simulate complex system behaviors

5. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 5 Relevance (cont’d…) Observed from TOPEX/ERS (left) and simulated by ROMS (right) mean sea level anomaly for the period November 1997 to February 1998.

6. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 6 Relevance (cont’d…) Storm surge forcasting can help prepare for disastrous flooding

7. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 7 Methods 3 functional units for simulation  GUI Fast Light Toolkit (open source GUI toolkit)  Numerical ocean circulation model iRoms (open source numerical model)  Visualization routines OpenSceneGraph (open source visualization toolkit)

8. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 8 Methods (cont’d…)

9. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 9 Graphical User Interface

10. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 10 iROMS iROMS is a modified version of ROMS compiled into a linkable library. Main change was to remove the outermost time-stepping loop New top level functions

11. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 11 iROMS (cont’d…) 50 x 20 curvilinear masked grid 10 vertical levels User controls wind field, freshwater flux and update frequency User chooses to display salinity, velocity, height, floats at the multiple levels.

12. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 12 Advantages of num. models Modify model for other geographical domains Add other submodels (biology, chemistry, etc…) Large Scientific comunity

13. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 13 Vizualization Routines OpenSceneGraph Water Height Salinity Velocity Particle Tracing

14. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 14 OpenSceneGraph

15. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 15 Evaluation Model runs at interactive rates on PC hardware Used for workshops with highschool students Is being activeley used by researchers as a teaching tool.

16. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 16 Evaluation (cont’d…) Lets take a test drive !

17. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 17 Conclusion Authors successfully package a fully functional small numerical model that is easy to use through a GUI at interactive speeds on a PC. Better than interactive visualization of stored simulation data

18. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 18 Conclusion (cont’d…) Plans to do formal evaluation of the program’s educational utility Future developments efforts in 2 directions:  Port for other geographical domains  Expansion of ROMS features

19. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 19 Questions Is the CHIMP development only useful for educational purposes, or could it be used in other domains ?

20. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 20 Questions (cont’d…) Can future developments of CHIMP benefit from a 3D visualization implementation?

21. 02-28-2007MSIM 842 VISUALIZATION II INSTRUCTOR: JESSICA R. CROUCH 21 Questions (cont’d…) LOD is usually applied to geometry detail only, but the basic concept can be generalized. How can this concept be used for future developments of CHIMP?