Steven Hostetler, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 82
Coupling ice-sheet and climate models for simulation of former ice sheets Coupling ice-sheet and climate models for simulation of former ice sheets
This chapter explores the development of coupled climate and ice-sheet models over the past two decades, discusses the current technical and physical capabilities of models, and identifies future work for developing a better understanding of ice-climate events that have punctuated Earth history. The chapter also illustrates the complex behavior of the climate system and the modeling...
Authors
Shawn J. Marshall, David Pollard, Steven W. Hostetler, Peter U. Clark
Freshwater forcing of abrupt climate change during the last glaciation Freshwater forcing of abrupt climate change during the last glaciation
Large millennial-scale fluctuations of the southern margin of the North American Laurentide Ice Sheet occurred during the last deglaciation, when the margin was located between about 43° and 49°N. Fluctuations of the ice margin triggered episodic increases in the flux of freshwater to the North Atlantic by rerouting continental runoff from the Mississippi River drainage to the Hudson or...
Authors
Peter U. Clark, Shawn J. Marshall, Garry K. C. Clarke, Steven W. Hostetler, Joseph M. Licciardi, James T. Teller
Evaporation from groundwater discharge playas, Estancia Basin, central New Mexico Evaporation from groundwater discharge playas, Estancia Basin, central New Mexico
Bowen ratio meteorological stations have been deployed to measure rates of evaporation from groundwater discharge playas and from an adjacent vegetated bench in the Estancia Basin, in central New Mexico. The playas are remnants of late Pleistocene pluvial Lake Estancia and are discharge areas for groundwater originating as precipitation in the adjacent Manzano Mts. They also accumulate...
Authors
Kirsten M. Menking, Roger Y. Anderson, Nathaniel A. Brunsell, Bruce D. Allen, Amy L. Ellwein, Thomas A. Loveland, Steven W. Hostetler
Tropical climate at the last glacial maximum inferred from glacier mass-balance modeling Tropical climate at the last glacial maximum inferred from glacier mass-balance modeling
Model-derived equilibrium line altitudes (ELAs) of former tropical glaciers support arguments, based on other paleoclimate data, for both the magnitude and spatial pattern of terrestrial cooling in the tropics at the last glacial maximum (LGM). Relative to the present, LGM ELAs were maintained by air temperatures that were 3.5??to 6.6 ??C lower and precipitation that ranged from 63%...
Authors
S. W. Hostetler, P.U. Clark
Simulated influences of Lake Agassiz on the climate of central North America 11,000 years ago Simulated influences of Lake Agassiz on the climate of central North America 11,000 years ago
Eleven thousand years ago, large lakes existed in central and eastern North America along the margin of the Laurentide Ice Sheet. The large-scale North American climate at this time has been simulated with atmospheric general circulation models, but these relatively coarse global models do not resolve potentially important features of the mesoscale circulation that arise from...
Authors
S. W. Hostetler, P. J. Bartlein, P.U. Clark, E.E. Small, A.M. Solomon
Simulation of the potential responses of regional climate and surface processes in western North America to a canonical Heinrich event Simulation of the potential responses of regional climate and surface processes in western North America to a canonical Heinrich event
No abstract available.
Authors
S. W. Hostetler, P. J. Bartlein
Science and Products
Filter Total Items: 82
Coupling ice-sheet and climate models for simulation of former ice sheets Coupling ice-sheet and climate models for simulation of former ice sheets
This chapter explores the development of coupled climate and ice-sheet models over the past two decades, discusses the current technical and physical capabilities of models, and identifies future work for developing a better understanding of ice-climate events that have punctuated Earth history. The chapter also illustrates the complex behavior of the climate system and the modeling...
Authors
Shawn J. Marshall, David Pollard, Steven W. Hostetler, Peter U. Clark
Freshwater forcing of abrupt climate change during the last glaciation Freshwater forcing of abrupt climate change during the last glaciation
Large millennial-scale fluctuations of the southern margin of the North American Laurentide Ice Sheet occurred during the last deglaciation, when the margin was located between about 43° and 49°N. Fluctuations of the ice margin triggered episodic increases in the flux of freshwater to the North Atlantic by rerouting continental runoff from the Mississippi River drainage to the Hudson or...
Authors
Peter U. Clark, Shawn J. Marshall, Garry K. C. Clarke, Steven W. Hostetler, Joseph M. Licciardi, James T. Teller
Evaporation from groundwater discharge playas, Estancia Basin, central New Mexico Evaporation from groundwater discharge playas, Estancia Basin, central New Mexico
Bowen ratio meteorological stations have been deployed to measure rates of evaporation from groundwater discharge playas and from an adjacent vegetated bench in the Estancia Basin, in central New Mexico. The playas are remnants of late Pleistocene pluvial Lake Estancia and are discharge areas for groundwater originating as precipitation in the adjacent Manzano Mts. They also accumulate...
Authors
Kirsten M. Menking, Roger Y. Anderson, Nathaniel A. Brunsell, Bruce D. Allen, Amy L. Ellwein, Thomas A. Loveland, Steven W. Hostetler
Tropical climate at the last glacial maximum inferred from glacier mass-balance modeling Tropical climate at the last glacial maximum inferred from glacier mass-balance modeling
Model-derived equilibrium line altitudes (ELAs) of former tropical glaciers support arguments, based on other paleoclimate data, for both the magnitude and spatial pattern of terrestrial cooling in the tropics at the last glacial maximum (LGM). Relative to the present, LGM ELAs were maintained by air temperatures that were 3.5??to 6.6 ??C lower and precipitation that ranged from 63%...
Authors
S. W. Hostetler, P.U. Clark
Simulated influences of Lake Agassiz on the climate of central North America 11,000 years ago Simulated influences of Lake Agassiz on the climate of central North America 11,000 years ago
Eleven thousand years ago, large lakes existed in central and eastern North America along the margin of the Laurentide Ice Sheet. The large-scale North American climate at this time has been simulated with atmospheric general circulation models, but these relatively coarse global models do not resolve potentially important features of the mesoscale circulation that arise from...
Authors
S. W. Hostetler, P. J. Bartlein, P.U. Clark, E.E. Small, A.M. Solomon
Simulation of the potential responses of regional climate and surface processes in western North America to a canonical Heinrich event Simulation of the potential responses of regional climate and surface processes in western North America to a canonical Heinrich event
No abstract available.
Authors
S. W. Hostetler, P. J. Bartlein