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Lecture

GG281 Week 9 Lecture 1.docx

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Department
Geography
Course
GG281
Professor
Michael English
Semester
Fall

Description
Hydrosphere and the Atmosphere Week 9, Lecture 1  Reduced ice cover= albedo reduced for longer periods of time (albedo is the surfaces reflectivity, snow has a higher albedo)  More surface with a lower albedo, reducing reflectivity creating long term impacts the ocean absorbs more solar radiation and then heats the atmosphere Reduced Ice Cover Albedo Reduced for ocean absorbsmore Longer periods of solar radiation time Heating of the Atmosphere leads to more water vapour in the atmosphere, autumn cooling occurring longer, and it displays the effect of GHG (green house gases) Effectiveness of solar radiation is a function of albedo, and the angle the sun is hitting the Earth’s surfaces varies. Solar Zenith: angle measured from directly overhead to the geometric centre of the sun's disc  Angle large, the effectiveness of heating ground surface is small Groundwater Below ground surface: unsaturated zone or vadose zone Infiltration Capacity
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