Post on 05-Jan-2016
Greenhouse Effect and Greenhouse Gases
GREENHOUSEFFECT
Main Greenhouse GasesGreenhouse Gas Chemical
formulaAnthropogenic
sources (examples)
Atmospheric Lifetime (years)
GWP (100 year time horizon)
Carbon Dioxide CO2 Fossil fuel
combustion, deforestation,
cement production
50-200 1
Methane CH4
fossil fuels, landfills, animal
husbandry
12 21
Nitrous Oxide N2O fertilizer, fossil
fuel combustion120 310
Fluorinated Gases
various industrial processes
various various
Global Warming Potential (GWP) is measure of how much a given mass of greenhouse gas is estimated to contribute to global warming. It is a relative scale which compares the gas to that of the same mass of carbon dioxide (whose GWP is by convention equal to 1).
Temperature and CO2
Trends
Long-term trends in CO2 concentrations and temperature
Modeled
Observed Temperature
and
Human vs. Natural Influences on Climate
Global and Continental Temperature Change
Projected increase in CO2 concentration
800,000 years of carbon dioxide concentration
Sea Level Rise and Arctic Sea Ice
Change in Mean Global Sea Level
Sea Level Rise
Global mean sea level in past and projected for future
Sea Ice Decline
Greenhouse Gas Emissions
Global Greenhouse Gas Emissions, 1970 to 2004
2006 U.S. GHG Emissions by Source
U.S. Transportation GHGEmissions by Source
Greenhouse Gas Emissions by Country, 1990 and 2008