KIM NICHOLAS
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Top scientists weigh in on the current draft of Paris climate agreement

12/11/2015

 
Note: This blog post now appears on the Road to Paris platform. 
A panel of leading scientists told an overflowing room that aiming for global zero carbon emissions by 2050, including an emissions peak by 2020, would be necessary to meet the 1.5° temperature target mentioned in the latest text of the global climate agreement being hammered out by negotiators behind closed doors since its release at 21:00 last night.
 
The level of ambition has been at the heart of the current agreement, with a monumental shift this week when over 100 countries including the US, all EU member countries, and 79 African, Caribbean, and Pacific countries have supported the aim to limit warming to 1.5 degrees above preindustrial temperatures as part of the “high ambition coalition.”
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Johan Rockström of the Stockhölm Resilience Centre noted that the current text “still has the possibility of transformational change,” with the number one goal to limit warming as far below 2° as possible.
 
Taking as a given the increasing risks posed by increasing temperatures caused by continued emissions, the panel focused on how to achieve the targets currently under discussion, linking it to language in the text that would make the goal consistent with science.
 
Prof. Hans Schellnhuber of the Potsdam Institute for Climate Impact Research confirmed the benchmark that, for a decent chance of meeting a temperature target, the world has to get CO2 out of the system by 2050 for the 1.5 degree target, and by 2070 for 2 degrees. He stated this would require 2% reductions every year to decrease linearly to zero, further noting this was technically possible, and that Germany has been pursuing this goal faster than expected.
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The current text calls for "GHG neutrality in second half of the century," which leaves the door open to the necessary zero carbon emissions, but does not ensure it.
 
Several panelists raised concerns about the current “greenhouse gas neutrality” language. Prof. Kevin Anderson of the University of Manchester said the language of neutrality masks the need for “negative emissions,” removal of carbon from the atmosphere using largely unproven means.
 
Schellnhuber echoed the concern that negative emissions were a “gamble,” further stating that every country has to go for complete decarbonization by 2050 to meet the 1.5 degree target.
 
Rockström agreed, stating that "decarbonization" was a better long-term qualitative goal than greenhouse gas neutrality. He further warned the audience that staying under 2 degrees is also about keeping carbon in rainforests and other ecosystems, a service that becomes riskier at higher temperatures due to feedbacks between the land and atmosphere.
 
For any chance of 1.5°, Rockstrom continued that the richest nations (such as the EU, US, Australia, and other OECD countries) need to lead the charge to zero fossil fuel use at 2030, in order to leave some space in the carbon budget for developing countries to transition slightly more slowly to decarbonization. He noted that this is a very ambitious target, which the current climate pledges, or intended nationally determined contributions, do not yet meet.
 
Kevin Anderson stressed the critical nature of aligning national pledges with the agreed target over time through a robust, regular review process going forward, which Rockstrom suggested could occur every 2-3 years, as part of regular Conference of the Party meetings.
 
Joeri Rogelj of IIASA noted that scenarios consistent with the 1.5 target are expected to achieve global peak emissions by 2020. Noting this date leaves no time to waste, Rogelj said, “We must start rapid emission reductions, and not count on carbon capture and storage later.”
 
As everyone at Le Bourget anxiously awaits the next round of text, Prof. Schellnhuber cited his long experience with the climate negotiations process, saying that the second to last text that we now have available was “always stronger” than the final text, as parties had to compromise to reach agreement. He called the current text “extremely progressive, believe it or not,” though he warned that even the current softer goal of “greenhouse gas neutrality after mid-century” could disappear in the final wranglings over the next few hours.
 
Looking ahead, journalist Mark Hertsgaard asked “What has to happen in the next 18 months, not just the next 18 hours, from all governments to be realistic about 1.5?”
 
Kevin Anderson cited a role for individuals, noting a new report showing that 50% of global CO2 emissions come from just 10% of the population. He said this means that energy demand (reducing high-CO2 activities like flying) needs to be reduced by high emitters, including “most of us in this room.”
 
Schellnhuber said that the Paris Agreement will send a message to civil society- and it will be the work of business, cities, investors, and all of us to finish the job. He concluded that COP21 has to make the 1.5 to 2 degree target consistent with long-term actions, and “if they do their job, we'll be fine." 

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  • Welcome
  • About
    • Bio
    • CV >
      • Kim's Full CV
      • Kim's 2 page CV
      • Kim's Visual CV
    • Lab Members
  • Book
    • UNDER THE SKY WE MAKE
    • Press Kit & Images
    • Discussion Questions
    • Book Clubs
    • Teach UNDER THE SKY WE MAKE
    • Support the Book
    • Request from Local Bookstore/Library
    • How to order outside US/Canada
    • Behind the Scenes
    • If My Book Were Music
  • Research
    • Peer-Reviewed Publications
    • Flying Less >
      • The Takeoff of Staying on the Ground
      • Policy Briefs
      • Ingen ny tid för avgång
      • Academics Flying Less
    • Radically Reducing Lund's Emissions
    • Climate Solutions >
      • What Can I Do? 2 >
        • What Can I Do?
        • High School Teaching Materials
        • Fyra klimatsmarta livsstilsval
        • Press Release: 4 Lifestyle Choices That Most Reduce Your Carbon Footprint
        • The Climate Mitigation Gap: Study & Video Abstract
        • Study FAQs
      • Climate Science 101
      • Climate Policy >
        • IPCC Report on 1.5°
        • Kims Klimatval
        • COP21 (Paris Agreement)
      • Farmer adaptation
      • Harnessing biodiversity
    • Climate Education
    • Sustainable Land >
      • Global land use
      • European farming systems
      • Swedish land use
      • Ecosystem Services & OPERAs
      • REDD+
      • Land Acquisitions
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      • Urban Food Forestry
      • Local food in Iceland
      • One Great Meal
      • Dietary choices & climate change
      • Crop yields & climate
    • Wine, Climate, & Sustainability >
      • Wine & Climate: Impacts & Solutions
      • Wine Diversity for Climate Adaptation
      • Wine yields & quality under climate change
      • Farmer climate adaptation
      • Vineyard ecosystems & landscapes
      • European Wine Case Studies (OPERAs)
    • For Kids (K-12)
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