GG281 Lecture Notes - Vadose Zone, Hydrosphere, Surface Tension
Document Summary
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. Longer periods of time ocean absorbs more solar radiation. 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. 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. Below ground surface: unsaturated zone or vadose zone. Size of soil particles: texture: clay/silt/sand/larger material/organic material. Structure of soil/intensity of rainfall/vegetation cover/compaction (livestock/machinery) Ice lens ice parallel to level of ground force of gravity.
