Now showing items 1-10 of 30
Historical and idealized climate model experiments : an intercomparison of Earth system models of intermediate complexity
(Copernicus Publications on behalf of the European Geosciences Union, 2013-05-16)
Both historical and idealized climate model experiments are performed with a variety of Earth system models of intermediate complexity (EMICs) as part of a community contribution to the Intergovernmental Panel on Climate ...
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
(American Geophysical Union, 2008-08-18)
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 ...
Effects of ozone on net primary production and carbon sequestration in the conterminous United States using a biogeochemistry model
The effects of air pollution on vegetation may provide an important control on the carbon cycle that has not yet been widely considered. Prolonged exposure to high levels of ozone, in particular, has been observed to ...
Correction to “Importance of carbon-nitrogen interactions and ozone on ecosystem hydrology during the 21st century”
(American Geophysical Union, 2009-08-22)
Global economic effects of changes in crops, pasture, and forests due to changing climate, carbon dioxide, and ozone
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 ...
Net emissions of CH4 and CO2 in Alaska : implications for the region's greenhouse gas budget
(Ecological Society of America, 2007-01)
We used a biogeochemistry model, the Terrestrial Ecosystem Model (TEM), to study the net methane (CH4) fluxes between Alaskan ecosystems and the atmosphere. We estimated that the current net emissions of CH4 (emissions ...
The impacts of recent permafrost thaw on land–atmosphere greenhouse gas exchange
(IOP Publishing, 2014-04-06)
Permafrost thaw and the subsequent mobilization of carbon (C) stored in previously frozen soil organic matter (SOM) have the potential to be a strong positive feedback to climate. As the northern permafrost region experiences ...
Probabilistic forecast for twenty-first-century climate based on uncertainties in emissions (without policy) and climate parameters
(American Meteorological Society, 2009-10-01)
The Massachusetts Institute of Technology (MIT) Integrated Global System Model is used to make probabilistic projections of climate change from 1861 to 2100. Since the model’s first projections were published in 2003, ...
CO2 and CH4 exchanges between land ecosystems and the atmosphere in northern high latitudes over the 21st century
(American Geophysical Union, 2006-09-15)
Terrestrial ecosystems of the northern high latitudes (above 50oN) exchange large amounts of CO2 and CH4 with the atmosphere each year. Here we use a process-based model to estimate the budget of CO2 and CH4 of the region ...
Nitrogen attenuation of terrestrial carbon cycle response to global environmental factors
(American Geophysical Union, 2009-12-30)
Nitrogen cycle dynamics have the capacity to attenuate the magnitude of global terrestrial carbon sinks and sources driven by CO2 fertilization and changes in climate. In this study, two versions of the terrestrial carbon ...