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Articles 61 - 90 of 162
Full-Text Articles in Environmental Chemistry
On-Road Motor Vehicle Emissions Including Ammonia, Sulfur Dioxide And Nitrogen Dioxide (Presentation), Donald H. Stedman, Gary A. Bishop, Allison Peddle
On-Road Motor Vehicle Emissions Including Ammonia, Sulfur Dioxide And Nitrogen Dioxide (Presentation), Donald H. Stedman, Gary A. Bishop, Allison Peddle
Fuel Efficiency Automobile Test Publications
No abstract provided.
Portable Emission Measurements Of Yellowstone Park Snowcoaches And Snowmobiles, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman, John D. Ray
Portable Emission Measurements Of Yellowstone Park Snowcoaches And Snowmobiles, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman, John D. Ray
Fuel Efficiency Automobile Test Publications
As part of the National Park Service’s Temporary Winter Use Plans Environmental Assessment, the University of Denver has been collecting in-use tailpipe emissions data from snowcoaches and snowmobiles in Yellowstone National Park. During the winter of 2006, using a portable emissions monitoring system, tailpipe data were collected from 10 snowcoaches and 2 four-stroke snowmobiles. These vehicles were operated over a standard route within the park, and the snowcoaches all carried identical passenger loads. These snowcoaches were newer in age with more advanced fuel management technology than those studied earlier, and average emissions were lower as a result (120, 1.7, and …
Remote Measurements Of On-Road Emissions From Heavy-Duty Diesel Vehicles In California; Year 1, 2008, Gary A. Bishop, Nicolas E. Holubowitch, Donald H. Stedman
Remote Measurements Of On-Road Emissions From Heavy-Duty Diesel Vehicles In California; Year 1, 2008, Gary A. Bishop, Nicolas E. Holubowitch, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Motor Vehicle Emissions Including Nh3, So2 And No2, Donald H. Stedman, Gary A. Bishop, Allison Peddle
On-Road Motor Vehicle Emissions Including Nh3, So2 And No2, Donald H. Stedman, Gary A. Bishop, Allison Peddle
Fuel Efficiency Automobile Test Publications
No abstract provided.
Calibrating Feat Instruments Without Gas Cylinders, Allison Peddle, Donald H. Stedman
Calibrating Feat Instruments Without Gas Cylinders, Allison Peddle, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Signal To Noise Improvements In On-Road No, So2, And Nh3 Measurements Using A Multi-Component Classical Least Squares Fitting Approach (Presentation), Gary A. Bishop, Donald H. Stedman
Signal To Noise Improvements In On-Road No, So2, And Nh3 Measurements Using A Multi-Component Classical Least Squares Fitting Approach (Presentation), Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
A Decade Of On-Road Emissions Measurements, Gary A. Bishop, Donald H. Stedman
A Decade Of On-Road Emissions Measurements, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
A multi-year, on-road emission measurement program carried out in the cities of Chicago, IL, Denver, CO, Los Angeles, CA and Phoenix, AZ shows large, fuel specific tailpipe emissions reductions at all of the sites for carbon monoxide (CO), hydrocarbons (HC) and nitric oxide (NO). CO emissions decrease between 56% (Denver) and 71% (Chicago), HC emissions decrease between 27% (Phoenix) and 63% (Denver) and NO emissions have dropped between 48% (West LA) and 68% (Chicago). Three observed factors common to all of the sites are that the emission reductions are occurring in vehicles of all ages, that the influence of engine …
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 7, September 2006, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 7, September 2006, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 6, January 2007, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 6, January 2007, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Fleet Vehicle Smoke Emissions As Measured By On-Road Remote Sensing Using Infrared Scattering: Years 1998 Through 2007, Jeffrey A. Caulfield, Gary A. Bishop, Donald H. Stedman
Fleet Vehicle Smoke Emissions As Measured By On-Road Remote Sensing Using Infrared Scattering: Years 1998 Through 2007, Jeffrey A. Caulfield, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Phoenix Area: Year 6, November 2006, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Phoenix Area: Year 6, November 2006, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Portable Emission Measurements Of Snowcoaches And Snowmobiles In Yellowstone National Park, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
Portable Emission Measurements Of Snowcoaches And Snowmobiles In Yellowstone National Park, Gary A. Bishop, Ryan Stadtmuller, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 5, January 2005, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 5, January 2005, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Phoenix Area: Year 5, November 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Phoenix Area: Year 5, November 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In West Los Angeles: Year 4, October 2005, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In West Los Angeles: Year 4, October 2005, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
The Weekend Effect: The Science Suggests That We Are Embarking On An Expensive Policy Which Will Harm The Environment {Presentation}, Donald H. Stedman
The Weekend Effect: The Science Suggests That We Are Embarking On An Expensive Policy Which Will Harm The Environment {Presentation}, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
In-Use Emission Measurements Of Snowmobiles And Snowcoaches In Yellowstone National Park, Gary A. Bishop, Daniel A. Burgard, Thomas R. Dalton, Donald H. Stedman
In-Use Emission Measurements Of Snowmobiles And Snowcoaches In Yellowstone National Park, Gary A. Bishop, Daniel A. Burgard, Thomas R. Dalton, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 6, September 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 6, September 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Vehicle Remote Sensing For Nitrogen Dioxide (Presentation), Thomas R. Dalton, Gary A. Bishop, Donald H. Stedman
Vehicle Remote Sensing For Nitrogen Dioxide (Presentation), Thomas R. Dalton, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Omaha Area: Year 2, September 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Omaha Area: Year 2, September 2004, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Emissions In Asia Measured By Remote Sensing (Presentation), Donald H. Stedman, Gary A. Bishop
On-Road Emissions In Asia Measured By Remote Sensing (Presentation), Donald H. Stedman, Gary A. Bishop
Fuel Efficiency Automobile Test Publications
No abstract provided.
Portable Emission Measurements Of Snowcoaches And Snowmobiles In Yellowstone National Park (Presentation), John D. Ray, Gary A. Bishop
Portable Emission Measurements Of Snowcoaches And Snowmobiles In Yellowstone National Park (Presentation), John D. Ray, Gary A. Bishop
Fuel Efficiency Automobile Test Publications
No abstract provided.
Atmospheric Variability Of Methyl Chloride During The Last 300 Years From An Antarctic Ice Core And Firn Air, M. Aydin, Eric S. Saltzman, Warren J. De Bruyn, S. A. Montzka, J. H. Butler, M. Battle
Atmospheric Variability Of Methyl Chloride During The Last 300 Years From An Antarctic Ice Core And Firn Air, M. Aydin, Eric S. Saltzman, Warren J. De Bruyn, S. A. Montzka, J. H. Butler, M. Battle
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Measurements of methyl chloride (CH3Cl) in Antarctic polar ice and firn air are used to describe the variability of atmospheric CH3Cl during the past 300 years. Firn air results from South Pole and Siple Dome suggest that the atmospheric abundance of CH3Cl increased by about 10% in the 50 years prior to 1990. Ice core measurements from Siple Dome provide evidence for a cyclic natural variability on the order of 10%, with a period of about 110 years in phase with the 20th century rise inferred from firn air. Thus, the CH3Cl increase measured in firn air may largely be …
A History Of On-Road Emissions And Emissions Deterioration (Presentation), Donald H. Stedman, Gary A. Bishop
A History Of On-Road Emissions And Emissions Deterioration (Presentation), Donald H. Stedman, Gary A. Bishop
Fuel Efficiency Automobile Test Publications
No abstract provided.
Infrared Thermal Imaging Of Automobiles (Presentation), Angela M. Monateri, Donald H. Stedman, Gary A. Bishop
Infrared Thermal Imaging Of Automobiles (Presentation), Angela M. Monateri, Donald H. Stedman, Gary A. Bishop
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Motor Vehicle Emissions From Around The World, Donald H. Stedman, Gary A. Bishop
On-Road Motor Vehicle Emissions From Around The World, Donald H. Stedman, Gary A. Bishop
Fuel Efficiency Automobile Test Publications
No abstract provided.
Infrared Thermal Imaging Of Automobiles: Identification Of Cold Start Vehicles, Angela M. Monateri, Donald H. Stedman
Infrared Thermal Imaging Of Automobiles: Identification Of Cold Start Vehicles, Angela M. Monateri, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Emissions In Asia Measured By Remote Sensing, Donald H. Stedman, Gary A. Bishop, Niranjan Vescio, Nitin Manawat, Peter Mcclintock
On-Road Emissions In Asia Measured By Remote Sensing, Donald H. Stedman, Gary A. Bishop, Niranjan Vescio, Nitin Manawat, Peter Mcclintock
Fuel Efficiency Automobile Test Publications
On-road emissions are precisely the emissions which are impacting the air quality and which need to be controlled if air quality improvements are desired. Remote sensing measures mass emissions of CO, HC, NO and smoke per kg (or per L) of fuel burned. On-road emissions are not certification emissions for new vehicles, although new vehicles measured on-road most often provide remote sensing readings well within their certification values. On-road emissions are not the same as readings from scheduled emission tests, although on average the two correlate very well. The major difference between scheduled emission tests and on-road emissions readings is …
On-Road Remote Sensing Of Automobile Emissions In The Tulsa Area: Year 1, September 2003, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Tulsa Area: Year 1, September 2003, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The La Brea Area: Year 3, October 2003, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The La Brea Area: Year 3, October 2003, Gary A. Bishop, Daniel A. Burgard, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.