Geoff Heal, Columbia University, discusses how scientists and the IPCC specificlaly focus on general tendencies related to climate change, whereas what economists need are more information about the outlying events, the disaster scenarios that motivate policy choices.
Martin Weitzman of Harvard University begins his discussion by reviewing the most recent IPCC Summary Report and the language they use for describing the likelihood of various climate sensitivity scenarios. He relates that language and those likelihoods to the various probability distributions calculated by climate and economic modelers.
Gary Yohe of Wesleyan University explains how the value of information regarding projections of climate sensitivity depends on:
1. what the decisions are to be made about and for whom, 2. the character of the decision space (states of nature, irreversibility, persistence, etc.), 3. decisions based on the range of “states of nature” and “their distributions”, 4. decision makers prior assumptions about those distributions, 5. decision makers’ attitudes (averstion) towards risk, 6. timing of the decision
Yale Professor Ken Gillingham welcomes participants in this YCEI sponsored workshop that brings together climate change scientists and economists whose modeling efforts hinge on the need to accommodate anticipated climate change in a warming world.
Dan Lunt, University of Bristol, UK, discusses the basics of climate modeling and a history of how they’ve grown in sophistication through the present day and the questions that remain.
Understanding the ecological mechanisms governing the biogeogoraphy of organisms is essential to predict how climate change will alter ecosystems and their functioning. Factors affecting the patterns of aboveground plant and animal communities across landscapes have…
The Intertropical Convergence Zone (ITCZ) — responsible for most of the precipitation on Earth — is defined by a pronounced maximum rainfall occurring 5◦ north of the equator over most ocean basins. The existence of an ITCZ directly derives from large…
Nadine Unger, Department of Geology & Geophysics and School of Forestry & Environmental Studies at Yale University, explains the advantages of considering multiple species of aerosols based on their industrial source and the implications for regulating how they enter the environment. The agricultural sector receives special attention as the significance of biogenic volatile organic carbon emissions (Bvoc) may have been previously overlooked.
Biologists increasingly realize that understanding the impact of global change on biological processes requires accounting for fine-grain environmental variability (Potter, Arthur Woods, & Pincebourde, 2013). Similarly, climatologists have found that increasing the resolution of climate models typically produces better simulations of climate and precipitation…
Clark University’s Christopher Williams trained as a land surface hydrologist and terrestrial ecosystem ecologist. Clark University’s website reports on his work:
“Chris investigates how earth’s biosphere responds to natural and human perturbations such as severe drought events, bark beetle outbreaks, fires, harvesting, and land cover changes.”