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slides, sample and study guide - Global Air Quality and...

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DOI: 10.1126/science.1092666 , 1716 (2003); 302 Science et al. Hajime Akimoto, Global Air Quality and Pollution www.sciencemag.org (this information is current as of February 24, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/302/5651/1716 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/302/5651/1716/DC1 can be found at: Supporting Online Material http://www.sciencemag.org/cgi/content/full/302/5651/1716#otherarticles , 2 of which can be accessed for free: cites 33 articles This article 88 article(s) on the ISI Web of Science. cited by This article has been http://www.sciencemag.org/cgi/content/full/302/5651/1716#otherarticles 3 articles hosted by HighWire Press; see: cited by This article has been http://www.sciencemag.org/cgi/collection/atmos Atmospheric Science : subject collections This article appears in the following http://www.sciencemag.org/about/permissions.dtl in whole or in part can be found at: this article permission to reproduce of this article or about obtaining reprints Information about obtaining registered trademark of AAAS. is a Science 2003 by the American Association for the Advancement of Science; all rights reserved. The title Copyright American Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by the Science on February 24, 2009 www.sciencemag.org Downloaded from
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Global Air Quality and Pollution Hajime Akimoto The impact of global air pollution on climate and the environment is a new focus in atmospheric science. Intercontinental transport and hemispheric air pollution by ozone jeopardize agricultural and natural ecosystems worldwide and have a strong effect on climate. Aerosols, which are spread globally but have a strong regional imbalance, change global climate through their direct and indirect effects on radiative forcing. In the 1990s, nitrogen oxide emissions from Asia surpassed those from North America and Europe and should continue to exceed them for decades. International initiatives to mitigate global air pollution require participation from both developed and developing countries. When the first measurements of high concen- trations of CO over tropical Asia, Africa, and South America were made available by the MAPS (Measurement of Air Pollution from Satellite) instrument launched in 1981 on the space shuttle Columbia ( 1 ), it became clear that air pollution was an international issue. Those images showed not only that industrial air pollution from fossil fuel combustion could affect regional and global air quality, but that emissions from biomass burning (for- est fires, agricultural waste burning, and veg- etable fuel combustion) were important as well, confirming the hypothesis of Crutzen et al. ( 2 ). This meant that people in less devel- oped countries, as well as residents of indus- trialized and rapidly growing developing
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