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File:Projected changes over the 21st century in the atmospheric concentrations of carbon dioxide, methane, and nitrous oxide using the IPCC "SRES" emissions scenarios.gif

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English: This image shows three graphs of projected changes over the 21st century in the atmospheric concentrations of three greenhouse gases: carbon dioxide (chemical formula CO2), methane (CH4), and nitrous oxide (N2O). These projections are based greenhouse gas emissions scenarios contained in the Intergovernmental Panel on Climate Change's (IPCC) 2000 "Special Report on Emissions Scenarios" (SRES) (see the cited source). These projections do not include possible emission feedbacks from sources such as permafrost or the Amazon rainforest (sentence not supported by cited source - ed).
日期
來源 "Figure 2: Long Term Scenarios for Greenhouse Gas Concentrations, based on data provided by IPCC WG1," on website "Future Atmosphere Changes in Greenhouse Gas and Aerosol Concentrations," U.S. Environmental Protection Agency
作者 Environmental Protection Agency. Headquarters: Washington, D.C., U.S.A.
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"Information and graphics produced by U.S. federal agencies such as EPA are typically considered to be in the public domain. This material can therefore be used and reproduced without having to obtain permission." http://www.epa.gov/climatechange/kids/resources/tips.html

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此圖片(或其他媒體)是美國國家環境保護局(EPA)僱員的職務作品,作為美國聯邦政府的作品,所有EPA的圖片都屬於公有領域

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目前2011年12月25日 (日) 14:22於 2011年12月25日 (日) 14:22 版本的縮圖300 × 555(16 KB)Enescot{{Information |Description ={{en|1=This image shows three graphs of projected changes over the 21st century in the atmospheric concentrations of three greenhouse gases: carbon dioxide (chemical formula CO<sub>2</sub>), methane (CH<sub>4</sub>), and nit

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