POL469H1 Lecture Notes - Lecture 5: Evaporation, Food Security, Maya Civilization
Document Summary
Climate change and future projections (vulnerable regions) Be able to describe regional climates from atmospheric patterns. We want to relate the above to the hydrological cycles and patterns. Evaporation sumer salt contamination; water movement up through soil profile. Run-off: erosion (water erosion mostly some wind) Aet actual evapotranspiration (limited off water) Pet potential evapotranspiration (about energy- may not happen as water is limited) The balance of these fluxes allows us to predict how much water there is. Equatorial hydrology high precipitation and pet=aet because there is more water than energy. In breaking the sod reading the soil was eleuvial- these are present from the waterways and this is the large discharge from drainage basins. Be able to tell her why soil is so susceptible to erosion! The water table, groundwater, and surface water know these terms and the differences between them. Soil zone phenomenon is salinization; major impact of over irrigation- major issue especially in areas of high evapotranspiration.
