Steve Vavrus
Biographic Data
| ID | 6375480 |
|---|---|
| NAME | Steve Vavrus |
| GIVEN NAMES | Steve |
| FAMILY NAME | Vavrus |
| SIGNATURE | VAVRUS S |
| AFFILIATIONS | University of Wisconsin–Madison |
| VERIFIED | No |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 28 |
| AUTHOR COUNT | 5 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2014 |
| H-INDEX | 3 |
Does pre-industrial warming double the anthropogenic total
According to the early anthropogenic hypothesis, land clearing and agriculture caused emissions of greenhouse gases to begin to alter climate as early as 7000 years ago (Ruddiman, 2003). Climate-model simulations based on the CO2 and CH4 concentrations proposed in the hypothesis suggest that humans caused a global mean warming of 0.9 to 1.5°C before the start of the industrial era. Additional pre-industrial effects on land surface reflectance (ch…
Used planet
Human use of land has transformed ecosystem pattern and process across most of the terrestrial biosphere, a global change often described as historically recent and potentially catastrophic for both humanity and the biosphere. Interdisciplinary paleoecological, archaeological, and historical studies challenge this view, indicating that land use has been extensive and sustained for millennia in some regions and that recent trends may represent as …
The role of GCM resolution in simulating glacial inception
We test the influence of model resolution on glacial inception using a coupled atmosphere–slab ocean version of NCAR’s CCSM3 GCM. Simulations employ a modern orbital configuration and greenhouse gas concentrations representing both recent (year 1990) and hypothetically lower values based on Ruddiman’s Early Anthropogenic Hypothesis (240 ppm CO 2 , 450 ppb CH 4 ). We ran the model at two different horizontal resolutions: relatively coarse (spectra…
Comparisons of atmosphere–ocean simulations of greenhouse gas-induced climate change for pre-industrial and hypothetical ‘no-anthropogenic’ radiative forcing, relative to present day
We compare climate simulations for Present-Day (PD), Pre-Industrial (PI) time, and a hypothetical (inferred) state termed No-Anthropogenic (NA) based upon the low greenhouse gas (GHG) levels of the late stages of previous interglacials that are comparable in time (orbital configuration) to the present interglacial. We use a fully coupled dynamical atmosphere–ocean model, the CCSM3. We find a consistent trend toward colder climate (lower surface t…
Can natural or anthropogenic explanations of late-Holocene CO 2 and CH 4 increases be falsified
Concentrations of CO 2 and CH 4 in the atmosphere rose slowly during the millennia prior to the industrial era. Opposing explanations for these increases have invoked natural and anthropogenic sources. Here we revisit this argument using new evidence to see whether either explanation can be falsified (disproven, in the sense proposed by German philosopher Karl Popper). Two lines of evidence suggest that natural explanations for the CH 4 increase …
Can natural or anthropogenic explanations of late-Holocene CO 2 and CH 4 increases be falsified
Concentrations of CO 2 and CH 4 in the atmosphere rose slowly during the millennia prior to the industrial era. Opposing explanations for these increases have invoked natural and anthropogenic sources. Here we revisit this argument using new evidence to see whether either explanation can be falsified (disproven, in the sense proposed by German philosopher Karl Popper). Two lines of evidence suggest that natural explanations for the CH 4 increase …
Does pre-industrial warming double the anthropogenic total
According to the early anthropogenic hypothesis, land clearing and agriculture caused emissions of greenhouse gases to begin to alter climate as early as 7000 years ago (Ruddiman, 2003). Climate-model simulations based on the CO2 and CH4 concentrations proposed in the hypothesis suggest that humans caused a global mean warming of 0.9 to 1.5°C before the start of the industrial era. Additional pre-industrial effects on land surface reflectance (ch…
Comparisons of atmosphere–ocean simulations of greenhouse gas-induced climate change for pre-industrial and hypothetical ‘no-anthropogenic’ radiative forcing, relative to present day
We compare climate simulations for Present-Day (PD), Pre-Industrial (PI) time, and a hypothetical (inferred) state termed No-Anthropogenic (NA) based upon the low greenhouse gas (GHG) levels of the late stages of previous interglacials that are comparable in time (orbital configuration) to the present interglacial. We use a fully coupled dynamical atmosphere–ocean model, the CCSM3. We find a consistent trend toward colder climate (lower surface t…
The role of GCM resolution in simulating glacial inception
We test the influence of model resolution on glacial inception using a coupled atmosphere–slab ocean version of NCAR’s CCSM3 GCM. Simulations employ a modern orbital configuration and greenhouse gas concentrations representing both recent (year 1990) and hypothetically lower values based on Ruddiman’s Early Anthropogenic Hypothesis (240 ppm CO 2 , 450 ppb CH 4 ). We ran the model at two different horizontal resolutions: relatively coarse (spectra…
The role of GCM resolution in simulating glacial inception
We test the influence of model resolution on glacial inception using a coupled atmosphere–slab ocean version of NCAR’s CCSM3 GCM. Simulations employ a modern orbital configuration and greenhouse gas concentrations representing both recent (year 1990) and hypothetically lower values based on Ruddiman’s Early Anthropogenic Hypothesis (240 ppm CO 2 , 450 ppb CH 4 ). We ran the model at two different horizontal resolutions: relatively coarse (spectra…
Comparisons of atmosphere–ocean simulations of greenhouse gas-induced climate change for pre-industrial and hypothetical ‘no-anthropogenic’ radiative forcing, relative to present day
We compare climate simulations for Present-Day (PD), Pre-Industrial (PI) time, and a hypothetical (inferred) state termed No-Anthropogenic (NA) based upon the low greenhouse gas (GHG) levels of the late stages of previous interglacials that are comparable in time (orbital configuration) to the present interglacial. We use a fully coupled dynamical atmosphere–ocean model, the CCSM3. We find a consistent trend toward colder climate (lower surface t…
Can natural or anthropogenic explanations of late-Holocene CO 2 and CH 4 increases be falsified
Concentrations of CO 2 and CH 4 in the atmosphere rose slowly during the millennia prior to the industrial era. Opposing explanations for these increases have invoked natural and anthropogenic sources. Here we revisit this argument using new evidence to see whether either explanation can be falsified (disproven, in the sense proposed by German philosopher Karl Popper). Two lines of evidence suggest that natural explanations for the CH 4 increase …
Used planet
Human use of land has transformed ecosystem pattern and process across most of the terrestrial biosphere, a global change often described as historically recent and potentially catastrophic for both humanity and the biosphere. Interdisciplinary paleoecological, archaeological, and historical studies challenge this view, indicating that land use has been extensive and sustained for millennia in some regions and that recent trends may represent as …
Does pre-industrial warming double the anthropogenic total
According to the early anthropogenic hypothesis, land clearing and agriculture caused emissions of greenhouse gases to begin to alter climate as early as 7000 years ago (Ruddiman, 2003). Climate-model simulations based on the CO2 and CH4 concentrations proposed in the hypothesis suggest that humans caused a global mean warming of 0.9 to 1.5°C before the start of the industrial era. Additional pre-industrial effects on land surface reflectance (ch…
Environmental Science (5 works) · Geology and Paleoclimatology Research (5 works) · Climatology (4 works) · Atmospheric sciences (3 works) · Climate change (3 works) · Geography (3 works) · Geology (3 works) · Greenhouse gas (3 works) · Archaeology (2 works) · Archaeology and ancient environmental studies (2 works)