So you want to slow global warming?

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    So you want to slow global warming?
    Tim Garrett
    Assistant Professor
    Department of Meteorology
    University of Utah
    Combustion makes the world go round
    Fossil fuels + Oxygen
    give us
    water vapor + carbon dioxide
    + ENERGY
    How much energy?
    About 400,000,000,000,000,000,000 J
    Energy makes our world
    Transportation of people and goods
    Manufacturing of goods
    Construction of buildings and roads
    Production and transportation of food
    Even production and maintenance of people
    Without today’s energy production almost everything (and everyone) we know would be gone
    Carbon dioxide is the garbage of the world economy
    Fossil fuels + Oxygen
    give us
    water vapor + carbon dioxide
    + ENERGY
    How big is the carbon dioxide garbage heap we’ve made?
    ~300 billion tons
    Adding about 10 billiion tons per year
    How big a box would contain all that carbon dioxide?
    Carbon dioxide is a global forcing. How much man-made carbon dioxide is in the atmosphere currently? Take the temple for example. How big a box to the height of the temple would need to be built to contain all man-made carbon dioxide generated through history that is currently in the atmosphere? Assume unpressurized at ground level
    It would have to cover all the western states with the exception of New Mexico
    Why do we care?
    Carbon dioxide is non-toxic, odorless and invisible
    Plants love it
    It makes soda fizzy
    Because carbon dioxide is a “Greenhouse gas”
    What can we do?
    What can we do?
    To just stabilize carbon dioxide concentrations at their already high level requires cutting fossil fuel energy production by at least two-thirds.
    Reducing carbon dioxide concentrations will require bigger cuts
    Even then it will take 100s to 1000s of years for human carbon dioxide to go away
    How do we cut energy by two thirds?
    Shutting down the economy would not be popular
    Switching energy source is the alternative
    Options
    Solar, wind, and other renewables
    Specific drawbacks: quantity, transmission, and intermittancy
    “Burn” uranium instead of fossil fuels
    Specific drawback: public fears about safety
    You will shape your future

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