Homework #1
Geog 166: Environmental Modeling
Due before class October 7, 2016
A.) Please do the following exercises from Ford (2nd ed):
Appendix A: A.1, A.4
Appendix B: B.1, B.2, B.3, B.9
B.) The American marine toad (Bufo marinus) was introduced into Que

Geography 166: Environmental Modeling
Fall 2016
W, F 3:30 to 4:45 PM
Public Affairs 2035B
Kyle Cavanaugh
Office: 1156 Bunche Hall
E-mail: kcavanaugh@geog.ucla.edu
Office Hours: Wednesdays 2:15 to 3:15 PM and 4:45 to 5:45 PM
Course Description
This class p

Environmental Modeling
GEOG 166
Prof. Kyle Cavanaugh
kcavanaugh@geog.ucla.edu
What is a model?
A model is a substitute for a real system
Box and Draper (1987):
Essentially, all models are wrong, but
some are useful.
Informal/Mental models
Where does the p

Geog 166
Homework 3
Due before class October 21, 2016
Please do the following exercises from Ford (2nd ed) and turn in your answers.
Chapter 5: 1, 3, 5
Chapter 6: 1, 2, 3, 5, 6, 7
Chapter 7: 1, 2, 3

HW 1 (due at 11:59 pm* on October 7)
*exception for 1st HW
Sign up for an Insight Maker account
BEFORE class on Friday
dt = 0.5
dt = 1
dt = 2
dt = 5
Delta-Time
Smaller values for Delta-Time gives you
better estimates
The tradeoff:
The lower delta-time,

Dierences between Insight Maker (IM) and Stella
No clouds in IM when specifying external ows in open
system
Flows that go in both direc<ons are specied by
unchecking Only posi<ve rates dialog in IM and
biow in Stella
For biows in Insight Maker, t

Guide for Homework #3, Questions 1 and 3: Geography 166, Environmental Modeling (Fall 2016)
Chapter 5 Exercises:
Exercise 5.1. Verify the first model; build the model in figure 5.4 (see pg. 52) and verify the results in
figure 5.5.
Step #1: Start with

HW 3
Modeling Water in Mono Lake
Mono Lake
Mono Lake
The LA Aqueducts
Whoever brings the
water, brings the
people
-William Mulholland
Mono Lake
LA Began Diverting water from Mono
Lake in 1941
Mono Lake
LA Began Diverting water from Mono
Lake in 1941
Mod

dt = 1
dt = 5
dt = 10
More on dt
To assess dt in your models, cut dt in half,
re-run simulation, and look for any
significant change in values or dynamics
If there is no significant change, then the
original dt is fine
The faster your model changes (e.

Geog 166
Week 1
Model structure and formulation:
common forms of dynamic behavior
Objectives for 09/28/2016
1. Describe (mathematically) the following
common dynamic patterns: constant
growth, time dependent growth,
exponential growth/decay, logistic
grow

GEOG 166
10/21/2016
Week 4 Lab and HW
Due before class on 10/28/2016
*Remember to label you axes for all plots you create. Include the variable and the
associated units. Answer all the questions in bold. Please put your answers in a separate
document.
The