overview of the ipcc wg2 ar4 assessment: where it is and where it needs to go chris field carnegie...
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![Page 1: Overview of the IPCC WG2 AR4 assessment: Where it is and where it needs to go Chris Field Carnegie Institution: Department of Global Ecology cfield@globalecology.stanford.edu,](https://reader036.vdocuments.net/reader036/viewer/2022070404/56649f395503460f94c56acb/html5/thumbnails/1.jpg)
Overview of the IPCC WG2 AR4 assessment:Where it is and where it needs to go
Chris Field
Carnegie Institution: Department of Global [email protected], www.global-ecology.org
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Success of the IPCC
• Stakeholder buy-in• Reputation for credibility• Stakeholder buy-in
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WG2: Impacts, Adaptation, & Vulnerability
• AR4 – Martin Parry & Osvaldo Canziani• TAR – Jim McCarthy & Osvaldo Canziani• SAR – Bob Watson & Marufu Zinyowera• FAR – W.J. McGTegart & Gordon
Sheldon
• AR5 - ?
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WG2: AR4
• 6 sectors
• 8 Regions
• Water• Ecosystems• Food, Fiber & Forest Products• Coastal Systems• Industry Settlement, & Society• Human Health
• Africa• Asia• Australia & New Zealand• Europe• Latin America• North America• Polar Regions• Small Islands
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IPCC process
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Key elements
• Comprehensive assessment• Multiple layers of monitored review• Consensus approval by governments
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WG2: Where it is
Lists ---
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& family quarrels
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IPCC: Where it needs to go
• Integration among working groups• Scenarios• Adaptation• Mechanisms in WG2• Specific, coordinated impact studies
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AR 5 scenarios
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Adaptation
• Move beyond anecdote– Analysis of many specific cases– Longitudinal analysis
• Explore in a unified framework with mitigation
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Mechanisms in WG2
• NPP & carbon cycle• Wildfire• Crop & forest insect pests• Biodiversity• Agriculture & Land Use• Sea level rise• Storms & Other extreme events
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Specific, coordinated impact studies
• Parallel to WG1• Major investment in impact models
– MIPs
• Coordinated agenda• Utilize model runs from the archive• Multi-model analyses