CHAPTER FOUR
Climate Change:  Impacts in the Great Lakes Basin
Contents
4.1
INTRODUCTION
93
Report of the Great Lakes Water Quality Board
4.2
CLIMATE CHANGE - ADDRESSING IMPACTS IN THE GREAT LAKES BASIN
94
Report of the Council of Great Lakes Research Managers
4.3
CLIMATE CHANGE - UNDERSTANDING THE IMPACT OF CLIMATE CHANGE ON GROUND WATER
95
4.3.1
Introduction
95
4.3.2
Stresses on Ground Water Supplies in the Great Lakes Basin
95
4.3.3
Climate Change Models
95
General Circulation Models
95
Regional Climate Models
97
Historical Analogues
97
Climate Transposition
98
4.3.4
Urban Heat Islands
98
4.3.5
The Effect on Ground Water
98
4.3.6
Recommendations
100
4.4
REFERENCES (Section 4.3)
101
Tables
1.
Predictions for the Great Lakes Region
96
Figures
1.
Comparison between present precipitation and future projections using
 the Canadian and Hadley models
96
2.
Projected climate in Illinois in 2030 and 2090 using Canadian and Hadley model projections
98
3.
Drought conditions in the U.S. on September 24, 2002, after a summer of low precipitation
 and extremely high temperatures
99
92