Upto Midterm – ESSA09 Lecture 1-5 May 12th.docx

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Department
Environmental Science
Course
EESA09H3
Professor
Tanzina Mohsin
Semester
Summer

Description
thWINDESSA09May 12 2011Prof Tanzina Mohsintanzinamohsinutorontoca rdMidterm June 23Lecture 1 WindHuman mythologyDestructivenesstornadoes hurricanes o 165 tornadoes in 24 hours 194 dead in Alabama in April 2011Climatic importancewind chill local cooling and heating Chinooks local climatePower sourcewind powerAtmospheric Primero Wind mythology history of windGreeks eurocentricAeolus greek god designated by Zeus to look after the four winds o Zephrusgentle west wind o Boreaschilly north wind o Notossouthern rain bringer o Eurusilltempered east breezeChinese mythologyFeng Po Powind goddess replaced by Feng PoJapanese mythologyFujin was one of the earliest Gods of Shinto the God of WindNorth American IndianConnect spiritual power with windNavajo DinEwind intimately connected to their spiritual lifePart of creation stories Holy windlinks to breathing o Thought we were created from wind and not earthOthersWind mythology permeates most human societieso Cultural windsCulturally wind has been used as a metaphor often representing changeGone with the wind TwisterThe hurricane o Denzel Washingtons character connected to the character of a hurricaneMonsoon wedding o Shows different action of wind that have characters that match up with each of the charactersChocolateThe wind that shakes the barleyo Wind in religionsIn the Hindu and Buddhist religionsWind is viewed as the nature or state of a GodReferred to as vayu pavan and godaiIn other religions such as Islam Judaism or ChristianityWind is viewed as one of the five great elements of powerThe wind power had been used to teach lessons to the followers in the pastEach book of the religions describe the act of wind power in different ways In Ancient Egypt the 5 elements were used to create science and math o Participation Opportunityslide 29 o Variations in atmospheric constituentsGeologicalControlvolcanic46 billion yearsThe atmosphere has not been stablecomposition is dynamic not static and is always changing o Balance comes not from static but because inputs equal outputsIn the beginning o Early earthAtmospheric composition largely the results of volcanic emissions geologic controlCO2 CH4Lie appeared 38 billion years ago o 23 billion years of methane carbon dioxide atmosphereAnaerobic conditions age of bacteria o Abrupt change23 billion years agoO2 makes an appearance in the atmosphere and stabilizes at 21Aerobic life forms appear and flourish biologic controlLinks to Gaia Hypothesis James LovelockBiological controlaerobic revolutionJames Lovelockbasic premise is that LIFE modifies the environment to best suit itself survival of the fittest21 O2 is optimum for lifeMars and Venus are in a static equilibrium with high levels of carbon dioxide and methanebut no lifeSo why switch from anaerobic to aerobic conditions 23 billion years ago o Gaia HypothesisEarly sun produced 30 less energy AchaeanSolar output has been gradually increasing making earth HOTEarly earth with high levels of methane and carbon dioxide had a strong greenhouse effect which lead to conditions warm enough for lifeAfter 23 billion years solar output increased and earth was becoming too warm the switch to aerobic life reduced the greenhouse gases CO2 and CH4 and cooled the planetWe not have considerably lower levels of CO2 in the atmosphere than the early earthGaia Hypothesis postulated that the atmospheric constituents have been controlled by life to optimize conditions for life Anthropogenic ControlpollutantsDuring the carboniferous period 360290 million years ago during the Paleozoic Age life arrives on land o Suns energy converted to plant material photosynthesis o Decaying plants are not full oxidized o Converted to coal and oil under geologic pressure
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