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In 2060, how much negative emissions technology might we need to deploy in order to hit our target emissions to limit warming to

In 2060, how much negative emissions technology might we need to deploy in order to hit our target emissions to limit warming to

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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In 2060, how much negative emissions technology might we need to deploy in order to hit our target emissions to limit warming to
In 2060, how much negative emissions technology might we need to deploy in order to hit our target emissions to limit warming to <2°C by 2100? O-10 Gt CO2/yr 15 Gt CO2/yr 25 Gt CO2/yr O 70 Gt CO2/yr
Transcribed Image Text:In 2060, how much negative emissions technology might we need to deploy in order to hit our target emissions to limit warming to <2°C by 2100? O-10 Gt CO2/yr 15 Gt CO2/yr 25 Gt CO2/yr O 70 Gt CO2/yr
GHG emissions (GtCO₂e/year) 80 70 60 50 40 30 20 10 0 Gross positive GHG emissions CO₂ from fossil fuels, industry and land use changes CH4, N₂O and F-Gases Mitigated GHG emissions Yellow line: Net GHG emissions in a Business as usual scenario (~RCP6.0) Examples of associated technologies Business as usual First priority: Conventional abatement technologies Red line: Net GHG emissions required to limit warming to <2°C by 2100 other GHG Decarbonizing our energy supply Green shaded area: GHG emissions that can be CO₂ reduced by decarbonizing our energy supply Net zero GHG emissions Emitting technologies -- Supplement decarbonization with Negative Emissionet negative Gross negative GHG emissions CO₂ emissions I CO₂ Carbon removal technologies Beige shaded area: GHG emissions that will be difficult to cut out completely (e.g., existing houses that have gas furnaces, emissions from live stocks) 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100 In order to hit our net zero GHG emissions target by ~2090 (red line), we need to actively remove CO2 from the atmosphere (blue shaded area) using "Carbon removal technologies" or "negative emission technologies" Adding the beige shaded area and the blue shaded area results in the red line https://nas-sites.org/dels/studies/cdr/ Figure 1. This figure illustrates the potential role of negative emissions technologies in reaching net zero emissions. The chart shows a climate mitigation scenario in which net anthropogenic emissions of all greenhouse gases fall from more than 50 gigatons of CO2 per year (GtCO2/yr) today to less than 20 GtCO2/yr at mid century, and to approximately zero by 2100. Approximately 10-20 GtCO2/yr of gross anthropogenic emissions are from sources that will be very difficult or expensive to eliminate by emissions reductions alone. Most scenarios that limit global warming to two degrees Celsius thus rely on CO2 removal and storage that ramps up rapidly before midcentury to reach approximately 20 GtCO2/yr by century's end. Source: UNEP 2017 -10 -20 Below 2°C CO₂
Transcribed Image Text:GHG emissions (GtCO₂e/year) 80 70 60 50 40 30 20 10 0 Gross positive GHG emissions CO₂ from fossil fuels, industry and land use changes CH4, N₂O and F-Gases Mitigated GHG emissions Yellow line: Net GHG emissions in a Business as usual scenario (~RCP6.0) Examples of associated technologies Business as usual First priority: Conventional abatement technologies Red line: Net GHG emissions required to limit warming to <2°C by 2100 other GHG Decarbonizing our energy supply Green shaded area: GHG emissions that can be CO₂ reduced by decarbonizing our energy supply Net zero GHG emissions Emitting technologies -- Supplement decarbonization with Negative Emissionet negative Gross negative GHG emissions CO₂ emissions I CO₂ Carbon removal technologies Beige shaded area: GHG emissions that will be difficult to cut out completely (e.g., existing houses that have gas furnaces, emissions from live stocks) 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100 In order to hit our net zero GHG emissions target by ~2090 (red line), we need to actively remove CO2 from the atmosphere (blue shaded area) using "Carbon removal technologies" or "negative emission technologies" Adding the beige shaded area and the blue shaded area results in the red line https://nas-sites.org/dels/studies/cdr/ Figure 1. This figure illustrates the potential role of negative emissions technologies in reaching net zero emissions. The chart shows a climate mitigation scenario in which net anthropogenic emissions of all greenhouse gases fall from more than 50 gigatons of CO2 per year (GtCO2/yr) today to less than 20 GtCO2/yr at mid century, and to approximately zero by 2100. Approximately 10-20 GtCO2/yr of gross anthropogenic emissions are from sources that will be very difficult or expensive to eliminate by emissions reductions alone. Most scenarios that limit global warming to two degrees Celsius thus rely on CO2 removal and storage that ramps up rapidly before midcentury to reach approximately 20 GtCO2/yr by century's end. Source: UNEP 2017 -10 -20 Below 2°C CO₂
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