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American Chemical Society 4
Human Activity and Greenhouse Gases-1997 Data
“The world’s economy runs on carbon: the “fuel” in fossil fuels. Coal, oil, and natural gas contribute energy to nearly every human endeavor in industrialized nations, and carbon dioxide (CO2) is a by-product of burning these fuels. This graph containing data for the U.S. illustrates how thoroughly fossil fuels and CO2 emissions are integrated into American life. CO2 contributes more to the recent increase in greenhouse warming than any other gas. CO2 persists in the atmosphere longer and longer as concentrations continue to rise.”
Atmospheric Properties & Processes
Reference: International Global Atmospheric Chemistry www.igac.noaa.gov/
American Chemical Society 2
Human Impact on thLeabharlann Baidu Carbon Cycle
5
Human Activity and Greenhouse Gases – Estimation Using 2000 Data
American Chemical Society 3
Major Human-Produced Greenhouse Gases
“Many natural and human-made gases contribute to the greenhouse effect that warms the Earth's surface. Water vapor (H2O) is the most important, followed by: Carbon Dioxide (CO2), Methane (CH4), and Chlorofluorocarbons (CFCs). This diagram shows the relative importance of the major human-produced greenhouse gases to current warming. CO2 is the most important followed in descending order by CH4, CFCs, Ozone (O3), and Nitrous Oxide (N2O).”
“The red arrow, representing rapid fossil fuel burning, indicates the main way in which humans affect the natural carbon cycle. Carbon dioxide (CO2) levels are increasing because the natural system cannot keep pace with this new emission source. The natural processes that permanently remove this additional carbon - ocean uptake and sedimentation - work extremely slowly.” Reference: Upsetting the Carbon Balance – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/carbon03.jsp
American Chemical Society
Reducing Your Carbon Footprint Chemists Celebrate Earth Day 2009
American Chemical Society, Office of Community Activities, 1-800227-5558 x6097 or earthday@acs.org Visit www.acs.org/earthday for hands-on activities, contests, local contacts and additional information!
American Chemical Society
Reference: Human Activity and Greenhouse Gases – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/causes03.jsp
Reference: CO2 and Other Greenhouse Gas Variations – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/causes02.jsp
Human Activity and Greenhouse Gases-1997 Data
“The world’s economy runs on carbon: the “fuel” in fossil fuels. Coal, oil, and natural gas contribute energy to nearly every human endeavor in industrialized nations, and carbon dioxide (CO2) is a by-product of burning these fuels. This graph containing data for the U.S. illustrates how thoroughly fossil fuels and CO2 emissions are integrated into American life. CO2 contributes more to the recent increase in greenhouse warming than any other gas. CO2 persists in the atmosphere longer and longer as concentrations continue to rise.”
Atmospheric Properties & Processes
Reference: International Global Atmospheric Chemistry www.igac.noaa.gov/
American Chemical Society 2
Human Impact on thLeabharlann Baidu Carbon Cycle
5
Human Activity and Greenhouse Gases – Estimation Using 2000 Data
American Chemical Society 3
Major Human-Produced Greenhouse Gases
“Many natural and human-made gases contribute to the greenhouse effect that warms the Earth's surface. Water vapor (H2O) is the most important, followed by: Carbon Dioxide (CO2), Methane (CH4), and Chlorofluorocarbons (CFCs). This diagram shows the relative importance of the major human-produced greenhouse gases to current warming. CO2 is the most important followed in descending order by CH4, CFCs, Ozone (O3), and Nitrous Oxide (N2O).”
“The red arrow, representing rapid fossil fuel burning, indicates the main way in which humans affect the natural carbon cycle. Carbon dioxide (CO2) levels are increasing because the natural system cannot keep pace with this new emission source. The natural processes that permanently remove this additional carbon - ocean uptake and sedimentation - work extremely slowly.” Reference: Upsetting the Carbon Balance – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/carbon03.jsp
American Chemical Society
Reducing Your Carbon Footprint Chemists Celebrate Earth Day 2009
American Chemical Society, Office of Community Activities, 1-800227-5558 x6097 or earthday@acs.org Visit www.acs.org/earthday for hands-on activities, contests, local contacts and additional information!
American Chemical Society
Reference: Human Activity and Greenhouse Gases – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/causes03.jsp
Reference: CO2 and Other Greenhouse Gas Variations – Exhibit on Global Warming at Koshland Science Museum www.koshland-science-museum.org/exhibitgcc/causes02.jsp