Climate Change, People, and the Carbon Cycle
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1 Climate Change, People, and the Carbon Cycle An emerging challenge: Supporting Greenhouse Gas Management Strategies with Observations, Modeling, and Analysis
2 Why this is an urgent issue The primary cause of climate change and ocean acidification is the increase of greenhouse gases (GHGs) in the atmosphere, predominantly carbon dioxide Three reasons for having more and better information Climate feedbacks Success of GHG management Ocean Acidification
3 Why Regional Scale Information? Societies are advancing efforts to reduce CO 2 emissions Mitigation efforts are diverse and vary by nation, region, & emission sector The complexity & variability of the carbon cycle, the scale of the problem, and the number of GHGs make tracking these efforts challenging, but surmountable Large-scale emission reduction approaches require independent, scientific monitoring to support verification and policy decisions Ozone Depletion Air Quality Acid Rain 3
4 Tools for Global Monitoring Greenhouse Gases Bottom-up measurements (Accounting = checkbook ) Emissions reporting Reported and verified offsets Site-specific measurements Top-down measurements (Validation = bank statement ) Comprehensive atmospheric observation system Ecosystem and ocean observations Reanalysis (compares checkbook with bank statement) Transport model Assimilation Regional fluxes (emission and uptake)
5 Satellites Carbon Weather CarbonTracker TCCON Current Network Earth Networks
6 Current Governance?... it doesn t really matter who does it, but the ECVs [Essential Climate Variables] must be tackled, one by one, and with vigor. At the moment there is more cackle than tackle. Need for stronger political and financial support to succeed
7 Specific Needs for the Future Sampling & Measurement Improve techniques and approaches Develop robust sampling instruments Sustain long-term observations Expand observing systems (3 ways) Data Records Quantify uncertainty Strengthen data centers o Accessibility o Evaluation o Coordination Modeling and Analysis Increase computing capacity Achieve finer transport resolution Improve ensemble assimilation Products Determine societal need for products Design and develop products Success Centrally managed funds work
8 Backup Slides
9 Surface-based GHG Networks CarboEurope (*) NOAA TCCON AGAGE WMO Global Atmospheric Watch FluxNet Page 9
10 Percent of 2010 Emissions 100 How will Society Reduce Greenhouse Gas Emmissions? Develop System Enhance System Maintain System Establish Baselines Critical Verif ication Period 50 Fine Grid, Robust Verification 20 Year
11 One Systems Approach January (net CO 2 emission) Carbon Weather CarbonTracker July (net CO 2 uptake) Long-term Observations
12
13
14 Climate Feedbacks Half of the CO 2 emitted by fossil fuel burning is absorbed by the ocean and biosphere. Will this continue? Thawing permafrost has the potential to release huge amounts of CO 2 and methane.
15 Greenhouse Gas Management What works? How well does it work?
16 Ocean Acidification Regardless of climate change, the ocean becomes increasingly acidic with rising CO 2 in the atmosphere.
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