Overview of the IPCC WG2 AR4 assessment: Where it is and where it needs to go Chris Field Carnegie Institution: Department of Global Ecology
Success of the IPCC Stakeholder buy-in Reputation for credibility Stakeholder buy-in
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 - ?
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
IPCC process
Key elements Comprehensive assessment Multiple layers of monitored review Consensus approval by governments
WG2: Where it is Lists ---
& family quarrels
IPCC: Where it needs to go Integration among working groups Scenarios Adaptation Mechanisms in WG2 Specific, coordinated impact studies
AR 5 scenarios
Adaptation Move beyond anecdote –Analysis of many specific cases –Longitudinal analysis Explore in a unified framework with mitigation
Mechanisms in WG2 NPP & carbon cycle Wildfire Crop & forest insect pests Biodiversity Agriculture & Land Use Sea level rise Storms & Other extreme events
Specific, coordinated impact studies Parallel to WG1 Major investment in impact models –MIPs Coordinated agenda Utilize model runs from the archive Multi-model analyses