Browsing Joint Program on the Science and Policy of Global Change Reports by Author "Melillo, Jerry M."
Now showing items 1-9 of 9
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Analysis of Climate Policy Targets under Uncertainty
(MIT Joint Program on the Science and Policy of Global Change, 2009-09)Although policymaking in response to the climate change is essentially a challenge of risk management, most studies of the relation of emissions targets to desired climate outcomes are either deterministic or subject to a ... -
Consequences of Considering Carbon/Nitrogen Interactions on the Feedbacks between Climate and the Terrestrial Carbon Cycle
(MIT Joint Program on the Science and Policy of Global Change, 2007-06)A number of observational studies indicate that carbon sequestration by terrestrial ecosystems in a world with an atmosphere richer in carbon dioxide and a warmer climate depends on the interactions between the carbon and ... -
Global Economic Effects of Changes in Crops, Pasture, and Forests due to Changing Climate, Carbon Dioxide, and Ozone
(MIT Joint Program on the Science and Policy of Global Change, 2007-05)Multiple environmental changes will have consequences for global vegetation. To the extent that crop yields and pasture and forest productivity are affected there can be important economic consequences. We examine the ... -
Methane Fluxes Between Terrestrial Ecosystems and the Atmosphere at Northern High Latitudes During the Past Century: A retrospective analysis with a process-based biogeochemistry model
(MIT Joint Program on the Science and Policy of Global Change, 2004-03)We develop and use a new version of the Terrestrial Ecosystem Model (TEM) to study how rates of methane (CH4) emissions and consumption in high-latitude soils of the Northern Hemisphere have changed over the past century ... -
MIT Integrated Global System Model (IGSM) Version 2: Model Description and Baseline Evaluation
(MIT Joint Program on the Science and Policy of Global Change, 2005-07)The MIT Integrated Global System Model (IGSM) is designed for analyzing the global environmental changes that may result from anthropogenic causes, quantifying the uncertainties associated with the projected changes, and ... -
Past and Future Effects of Ozone on Net Primary Production and Carbon Sequestration Using a Global Biogeochemical Model
(MIT Joint Program on the Science and Policy of Global Change, 2003-10)Exposure of plants to ozone inhibits photosynthesis and therefore reduces vegetation production and carbon sequestration. Simulations with the Terrestrial Ecosystem Model (TEM) for the historical period (1860-1995) show ... -
A Process-based Analysis of Methane Exchanges Between Alaskan Terrestrial Ecosystems and the Atmosphere
(MIT Joint Program on the Science and Policy of Global Change, 2003-11)We developed and used a new version of the Terrestrial Ecosystem Model (TEM) to study how rates of methane (CH4) emissions and consumption in Alaskan soils have changed over the past century in response to observed changes ... -
A Strategy for a Global Observing System for Verification of National Greenhouse Gas Emissions
(MIT Joint Program on the Science and Policy of Global Change, 2011-06)With the risks of climate change becoming increasingly evident, there is growing discussion regarding international treaties and national regulations to lower greenhouse gas (GHG) emissions. Enforcement of such agreements ... -
Unintended Environmental Consequences of a Global Biofuels Program
(MIT Joint Program on the Science and Policy of Global Change, 2009-01)Biofuels are being promoted as an important part of the global energy mix to meet the climate change challenge. The environmental costs of biofuels produced with current technologies at small scales have been studied, but ...
