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BBL Talk No. 2

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by

Dagny Taggart

on 31 July 2015

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Transcript of BBL Talk No. 2

Introduction
The Model
- Icosphere has 20 sites
Simulations
- Program is written in C++ and run on the Condor cluster
Theory
- Developing a mathematical framework to explain the trends in the system
Outlook
- We hope to extend this model via a 180-site version complete with albedo, wind, etc
So Far...
- Graphs have a one year period

Modeling the Earth: Climate on an Icosphere
- Began with several iterations on various different types of lattice
- Discovered an iscosahedron is the best approximation of a sphere
- 10 polar, 10 equatorial
- Particles can attach, detach and hop
- Calculations of these rates are done within the program to correctly approximate the dynamics of the climate
- Output files can then be graphed and analyzed
- Motivated by the desire for a deeper understanding of the dynamics governing climate evolution
Data
- Looking at particle density of the polar and equatorial regions with respect to time
- Varied values for the hopping rate, incoming and outgoing solar radiation, and number of updates per day
- Rates change
seasonally, with
each season
consisting of 91
days
- Using the equations of motion of the particles to approximate the overall trends of the system
- We then wrote a program based on these ideal dynamics, and graphed the resultant data on top of our simulation data
- The closer the match in the data, the better the approximation of the theory
dashed = theory
- This model could ultimately help us better understand the dynamics of atmospheric change
- Note that oscillations lag a little behind the seasonal changes
- May have applications as a time-lapse tool for climatologists
- https://www.ipcc.ch/publications_and_data/ar4/wg1/en/fig/faq-1-2-figure-1-l.png
Refrences
- https://keijiro.github.io/images/2013-10-08-1.png

- http://orig12.deviantart.net/c7d3/f/2013/292/7/5/sun_transparent_background_sun_world_by_royalblueiv-d6r3ze7.png

- http://1.bp.blogspot.com/-1uez-iv2YG8/UzdZDvETstI/AAAAAAAAAgk/nsXOmxayiZ8/s1600/earth-on-clear-background-made-of-clay-1024x1017.png

- https://www.youtube.com/watch?v=jAlDM YyWPis

- https://www.ipcc.ch/publications_and_data/ar4/wg1/en/fig/faq-1-2-figure-1-l.png

Special Thanks To:
- The W&L Summer Research
Scholars Program

- Professor Royce Zia

- The W&L IT Department

- Professor Cook
Full transcript