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Lecture

sept,19,2013.docx

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Department
Earth Sciences
Course
EARTHSC 2WW3
Professor
Dr
Semester
Fall

Description
Lecture 3 WHERE DOES THE WATER RESIDE? How long does it reside? - grouendwater -flows across the ground -most would be evaporation or precipiaton Square kilometres of water - important greenhouse gas is : water vapour -water vapour accounts for 33* shift -30 degrees is from water vapour 3 amospheric cells - Hadley cells -polar cells on top - of globe area where it rains the most is where there is an uplift of air -as air rises it gets colder -as it rises and colder it looses its ability to hold onto water -intertropical converence zone is palce where most water is received -all desserts is Annual  Areas like nroht of asutraila and northern aspects of southern aerica hav ealot of annual rainfall January  Intertropic convergence zone July  Summer solitice What does this all mean  Precipitation seasonality  Certain areas have a much larger range of high and low  North west indias before it hits nochin areas  Dessert regions ahve high range of seasonalities  Saskatchewan has problems with seasonalities  Darker have all these criterias Why od you need to understand local geology/culture/geography?  Pollution only 7 square kiolomtres  Has a huge giant cave  Hidden river cave  2 town to have air conditioning  Had tennis courts and weddings down there  Wher they go their water and power  A curstic area  Hamilton has carstic –has limestoens  Sink holes , small holes in ground  Put pipe down sink hole and put things through there  Town got boarded up  Polluted the water Science is simply not always.....  Don’t have to memorize the quote  Point and non-point solutions Water pollution  Philidelphia  Added cholorine ot water , cant drink that water  Working definition:  Purpose doesn’t matter  Agricultural or drinking water  Potable water fits for healthy conception  Polluted water , Introduction  Runoffs ocfs occur  Like clay which is an imparible layer  Gravel it will sink in  Humans – if we are cleaning waterm  The more pople in the world, the more challenges it get Water pollution  Class AA and A o Can use it for essential anything  Class B: you can swim/ recreation , but cant drink it ,  Calss C: boating, fishing, fish propogation  Class D: only fishing What percentage of lakes are polluted according ot hte EPA in United Sates?  45% Water pollution—clean water act  First American north American act was iuntil 1970’s  1972 was a US , first time and law had to install a water treatment  A city could injest raw sewage Water pollution-point/nonpoint  Point source pollution o Dischared through a discrete identifiable location o Easy to evaluate  Nonpoint source pollution o Broad diffuse sources o Difficult to identify and quantify Like a landfill, and a well non landfill, Water Pollution  Don’t ahve to memoixse table  Fertilizer on gorund, amino and nitrtes is added  Acids and salts – mine talining  Heavy metals –like nova scotia – people got sick , pregrancy rates  Pollution , blame it all on pollution Water pollution—nonpoint  In 2006, 2,4.-D is presuasily liekd to cancer  Throwing stuff on lawn goes to lake Ontario,  Tornot was a big city to do it  Toronto caved the way ,  2001, the supreme court of cnanda allowed municplited allowed them to band stuff like pesticides Water-pollution-nonpoint  Animal feed lots are  David Suzuki, 21% of candians contriute ot water - idea is that you cant deny that it takes
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