USGCRP Home Library Our Changing Planet FY2008   Figure 5: Median Ozone Amounts above North America (August 2006).

| Search

Updated 20 August 2008

OUR CHANGING PLANET The U.S. Climate Change Science Program for Fiscal Year 2008 A Report by the Climate Change Science Program and The Subcommittee on Global Change Research A Supplement to the President's Fiscal Year 2008 Budget

Median ozone amounts above North America, in parts per billion, at 10 to 11 km during August 2006, after stratospheric ozone contribution was removed. The ozone enhancement is mainly due to nitrogen oxides emitted by lightning into the upper troposphere, followed by reactions with carbon monoxide, methane, and volatile organic compounds of both anthropogenic and natural origins. The white dots show the locations of observing stations. Credit: O.R. Cooper, CIRES and NOAA / Earth System Research Laboratory (reproduced from Journal of Geophysical Research with permission from the American Geophysical Union). Back to Atmospheric Composition >>

US Climate Change Science Program / US Global Change Research Program, Suite 250, 1717 Pennsylvania Ave, NW, Washington, DC 20006. Tel: +1 202 223 6262. Fax: +1 202 223 3065. Email: information@usgcrp.gov. Web: www.usgcrp.gov. Webmaster: WebMaster@usgcrp.gov