Key Message - Mitigation of Climate Change

Working Group III contribution to the IPCC Fifth Assessment Report

Priyadarshi R. Shukla and Jim SkeaIPCC WGIII Co-Chairs

Understanding Climate Change & Enabling Climate Actions with a Special Focus on Mountain Systems of the Hindu Kush Himalayas

Outreach event on IPCC Role and Findings, 11 Apr 2017 to 13 Apr 2017, Kathmandu (Nepal)

Key Messages from IPCC WGIII AR5

GHG emissions growth has accelerated despite reduction efforts.

But emissions growth has accelerated in the last decade – driven by CO2 from fossil fuel combustion

There is far more carbon in the ground than emitted in any baseline scenario.

Based on SRREN Figure 1.7

Climate change mitigation is possible –

and early action will make it easier

Stabilising the atmosphere means moving away from business-as-usual – regardless of how ambitious we are.

40-70% reduction

Delaying mitigation until 2030 increases the difficulty and narrows the options for limiting warming to 2°C.

Ambitious mitigation involves transformation of the energy system.

Emission patterns would need to change throughout the economy.

Reducing energy demand is key - efficiency and behavioural change.

Reducing energy demand is key

Decarbonization of energy supply would be needed

Decarbonization of energy supply would be needed.

Mitigation comes at a cost, but strong economic growth can continue.

Global costs rise with the ambition of the mitigation goal.

Substantial reductions in emissions would require large changes in investment patterns.

Climate change mitigation can bring co-benefits – health, energy security and other societal goals.

Based on Figures SPM.6 and 12.23

Plans and strategies have expanded since 2007.

bis Thank you

Key Message - Mitigation of Climate Change

Environment

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