EESA07H3 Lecture 6: EESA07H3F Lecture 6 and Textbook notes
3 Nov 2016
School
Department
Course
Professor
Document Summary
Eesa07h3 f: lecture 6 - water in an environment of global change: impacts of climate. Rapid growth of the population increases the global demand for water. Consumption has also increased due to society growing wealthier. Increasing water use can be balanced by increasing efficiency. A rise of global temperatures by 0. 7 c in the last 100 years, and an estimated 1 to 6 c in this century. This is due to astronomical and atmospheric factors. Eccentricity, obliquity and precession change the amount and location of solar radiation reaching the earth. Eccentricity: is the deviation of a curve or orbit from circularity. Obliquity: describes the angle of tilt of the earth"s axis of rotation. Precession: is the change in orientation of the earth"s rotational axis. Fossil fuel combustion and tropical deforestation increase concentrations of greenhouse gasses. Without greenhouse gases the earth"s surface would be at least 33 c cooler and all surfaces would be frozen.
