John Lynch

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John Lynch

Postdoctoral Researcher

I am an environmental scientist interested in the impacts of agricultural production, including how these are estimated and the policy tools to report and reduce them.

My current research focuses on the climate impacts of agriculture, particularly livestock production. I employ a variety of approaches to investigate agriculture's contribution to global warming, and what it will take for agriculture and land-use to be compatible with our climate targets. Most agricultural climate assessments to date (in both the general media and scientific literature) are based on the 100-year Global Warming Potential (GWP100), an emission metric that describes individual emissions of different greenhouse gases as 'equivalent' quantities of carbon dioxide (CO2). This metric does not clearly capture the dynamics of different gases, particularly those with short atmospheric lifespans (i.e. methane), and cannot be used to set targets based on specific temperatures or cumulative emissions budgets. As a large share of agriculture livestock emissions are not CO2, we must use alternative approaches to assess their climate impacts. My work addresses this topic using simple climate models and alternative metric frameworks.