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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Projected_changes_over_the_21st_century_in_the_atmospheric_concentrations_of_carbon_dioxide,_methane,_and_nitrous_oxide_using_the_IPCC_"SRES"_emissions_scenarios.gif ‎（300 × 555像素，文件大小：16 KB，MIME类型：image/gif）

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描述
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).
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日期
来源 "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.
授权
(二次使用本文件)		 "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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Public domain
Public domain
本图像（或其他媒体）是美国国家环境保护局（EPA）雇员的职务作品，作为美国联邦政府的作品，所有EPA的图像都属于公有领域。
EPA logo
EPA logo
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当前2011年12月25日 (日) 14:222011年12月25日 (日) 14:22版本的缩略图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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