Atmospheric composition and climate/Policy issues: Difference between revisions
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{{ComponentPolicyIssueTemplate | {{ComponentPolicyIssueTemplate | ||
|Reference=Overmars et al., accepted; Van Vuuren and Stehfest, 2013; Shindell et al., 2012; | |Reference=Overmars et al., accepted; Van Vuuren and Stehfest, 2013; Shindell et al., 2012; | ||
|Description=In baseline scenarios, emissions and greenhouse gas concentrations increase substantially. The increase in emissions depends on socio-economic factors, such as population growth, economic growth, technology development and lifestyle. Most medium baseline scenarios in IMAGE result in a rise in global mean temperature of about 3 to 5 °C above pre-industrial levels by 2100 ( | |Description=In baseline scenarios, emissions and greenhouse gas concentrations increase substantially. The increase in emissions depends on socio-economic factors, such as population growth, economic growth, technology development and lifestyle. Most medium baseline scenarios in IMAGE result in a rise in global mean temperature of about 3 to 5 °C above pre-industrial levels by 2100 (the figure below). | ||
|Example=Policy interventions that affect future climate range from policy on energy and agricultural systems, air pollution measures, and land-use policies to direct management of radiative forcing. For instance, the IMAGE system can be used to analyse energy efficiency, use of low-carbon fuels, reduction in non-CO2 greenhouse gas emissions and reduction of deforestation ([[Overmars et al., accepted]]). Interventions related to policies on climate, air pollution and land use are described in Componens [[Climate policy]], [[Air pollution and energy policies]] and [[Land and biodiversity policies]], respectively. These measures lead to a change in emissions, and then to the expected reduction in radiative forcing and climate change. | |Example=Policy interventions that affect future climate range from policy on energy and agricultural systems, air pollution measures, and land-use policies to direct management of radiative forcing. For instance, the IMAGE system can be used to analyse energy efficiency, use of low-carbon fuels, reduction in non-CO2 greenhouse gas emissions and reduction of deforestation ([[Overmars et al., accepted]]). Interventions related to policies on climate, air pollution and land use are described in Componens [[Climate policy]], [[Air pollution and energy policies]] and [[Land and biodiversity policies]], respectively. These measures lead to a change in emissions, and then to the expected reduction in radiative forcing and climate change. | ||
The slow temporal dynamics of the climate system play an important role in climate policy assessments. IMAGE calculations show considerable time lag between policy introduction and impacts on climate change. Even if emissions were substantially reduced from 2020 and onwards, several decades would elapse before stabilization in temperature in the global climate system is observed ( | The slow temporal dynamics of the climate system play an important role in climate policy assessments. IMAGE calculations show considerable time lag between policy introduction and impacts on climate change. Even if emissions were substantially reduced from 2020 and onwards, several decades would elapse before stabilization in temperature in the global climate system is observed (the figure above). In addition to these standard climate measures, a range of policy interventions may play a role in the temporal dynamics of the climate system, and may be analysed using the IMAGE system: | ||
* Mitigation in short-lived versus long-lived greenhouse gas emissions, and co-benefits with air pollution measures ([[Shindell et al., 2012]]). Short-term benefits in air quality and climate mitigation may be achieved by reducing black carbon emissions and ozone precursors. | * Mitigation in short-lived versus long-lived greenhouse gas emissions, and co-benefits with air pollution measures ([[Shindell et al., 2012]]). Short-term benefits in air quality and climate mitigation may be achieved by reducing black carbon emissions and ozone precursors. | ||
* Non-mitigation management of global radiative forcing, such as by means of geo-engineering as shown in the figure below ([[Van Vuuren and Stehfest, 2013]]). | * Non-mitigation management of global radiative forcing, such as by means of geo-engineering as shown in the figure below ([[Van Vuuren and Stehfest, 2013]]). | ||
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Revision as of 11:51, 24 June 2014
Parts of Atmospheric composition and climate/Policy issues
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