Greenhouse gas emissions là gì

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Global Emissions by Gas

At the global scale, the key greenhouse gases emitted by human activities are:


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Source:IPCC (2014)Exitbased on global emissions from 2010. Details about the sources included in these estimates can be found in theContribution of Working Group III lớn the Fifth Assessment Report of the Intergovernmental Panel on Climate Change.Exit

Black carbon is a solid particle or aerosol, not a gas, but it also contributes khổng lồ warming of the atmosphere. Learn more about black carbon and climate change on our Causes of Climate Change page.Bạn đã xem: Greenhouse gas emissions là gì

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Global Emissions by Economic Sector

Global greenhouse gas emissions can also be broken down by the economic activities that lead to their production.

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Source:IPCC (2014);Exit based on global emissions from 2010. Details about the sources included in these estimates can be found in theContribution of Working Group III lớn the Fifth Assessment Report of the Intergovernmental Panel on Climate Change.ExitOther Energy (10% of 2010 global greenhouse gas emissions): This source of greenhouse gas emissions refers to lớn all emissions from the Energy sector which are not directly associated with electricity or heat production, such as fuel extraction, refining, processing, và transportation.

Note on emissions sector categories.

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Trends in Global Emissions


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Source: Boden, T.A., Marland, G., và Andres, R.J. (2017).Global, Regional, and National Fossil-Fuel CO2Emissions.Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Dvienthammytuanlinh.vnrtment of Energy, Oak Ridge, Tenn., U.S.A. Doi 10.3334/CDIAC/00001_V2017.Global carbon emissions from fossil fuels have significantly increased since 1900. Since 1970, CO2 emissions have increased by about 90%, with emissions from fossil fuel combustion and industrial processes contributing about 78% of the total greenhouse gas emissions increase from 1970 khổng lồ 2011. Agriculture, deforestation, & other land-use changes have been the second-largest contributors.

Emissions of non-CO2 greenhouse gases have also increased significantly since 1900. Lớn learn more about past và projected global emissions of non-CO2 gases, please see the vienthammytuanlinh.vn report, Global Anthropogenic Non-CO2 Greenhouse Gas Emissions: 1990-2020.

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Emissions by Country

Emissions và sinks related lớn changes in land use are not included in these estimates. However, changes in land use can be important: estimates indicate that net global greenhouse gas emissions from agriculture, forestry, and other land use were over 8 billion metric tons of CO2 equivalent, or about 24% of total global greenhouse gas emissions. In areas such as the United States & Europe, changes in land use associated with human activities have the net effect of absorbing CO2, partially offsetting the emissions from deforestation in other regions.

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Related Links

vienthammytuanlinh.vn resources

Other resources

References

1. IPCC (2014). Climate Change 2014: Mitigation of Climate Change. Exit Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change . Cambridge University Press, Cambridge, United Kingdom và New York, NY, USA.

2. FAO (2014). Agriculture, Forestry và Other Land Use Emissions by Sources và Removals by Sinks (PDF). (89 pp, 3.5 MB) Exit Climate, Energy & Tenure Division, FAO.

Xem thêm: Sách Bài Giảng Cuối Cùng Pdf, Sách Ebook Bài Giảng Cuối Cùng Pdf Doc

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Note on emissions sector categories:

The global emission estimates described on this page are from the Intergovernmental Panel (IPCC) on Climate Change"s Fifth Assessment Report. In this report, some of the sector categories are defined differently from how they are defined in the Sources of Greenhouse Gas Emissions page on this website. Transportation, Industry, Agriculture, and Land Use and Forestry are four global emission sectors that roughly correspond to lớn the U.S. Sectors. Energy Supply, Commercial and Residential Buildings, & Waste và Wastewater are categorized slightly differently. For example, the IPCC"s Energy Supply sector for global emissions encompasses the burning of fossil fuel for heat and energy across all sectors. In contrast, the U.S. Sources discussion tracks emissions from the electric nguồn svienthammytuanlinh.vnrately and attributes on-site emissions for heat và power to lớn their respective sectors (i.e., emissions from gas or oil burned in furnaces for heating buildings are assigned khổng lồ the residential & commercial sector). The IPCC has defined Waste and Wastewater as a svienthammytuanlinh.vnrate sector, while in the Sources of Greenhouse Gas Emissions page, waste and wastewater emissions are attributed to lớn the Commercial và Residential sector.