| Portable emission measurements of Yellowstone Park snowcoaches and snowmobiles. | |
| | |
MedLine Citation:
|
PMID: 19728487 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
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 11 g/mi for carbon monoxide [CO], hydrocarbons [HC], and oxides of nitrogen [NOx]). Large emissions variability was still observed despite using a standardized route and equal passenger loading. A comparison between five nearly identically equipped snowcoaches that had CO emissions ranging between 12 and 310 g/mi suggests that snow and road conditions are the most important factors behind the large emissions variability observed between modern snowcoaches: The first comprehensive emission measurements, using a portable emissions measurement system, on two snowmobiles showed that computer-controlled fuel management systems have increased fuel economy (>25 mpg) and are a major reason that emissions from these winter vehicles have dropped so dramatically. Using all of the tailpipe emissions data collected to date shows that the two primary winter vehicles in Yellowstone National Park are now very similar in their per-passenger emissions. |
| | |
Authors:
|
Gary A Bishop; Ryan Stadtmuller; Donald H Stedman; John D Ray |
Related Documents
:
|
16506437 - Sensitivity of the estimated air pollution-respiratory admissions relationship to stati... 19082747 - Description of the seasonal pattern in ozone concentration time series by using the str... 18211477 - Location identification for indoor instantaneous point contaminant source by probabilit... 19555987 - Mathematical modelling of hydrogen sulphide emission and removal in aerobic biofilters ... 2052197 - Staircase bioassay: the up-and-down method. 23281747 - Influence of front curtain design on nest choice by laying hens. |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of the Air & Waste Management Association (1995) Volume: 59 ISSN: 1096-2247 ISO Abbreviation: - Publication Date: 2009 Aug |
Date Detail:
|
Created Date: 2009-09-04 Completed Date: 2009-10-22 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9503111 Medline TA: J Air Waste Manag Assoc Country: United States |
Other Details:
|
Languages: eng Pagination: 936-42 Citation Subset: IM |
Affiliation:
|
Department of Chemistry and Biochemistry, University of Denver, Denver 80208, USA. gbishop@du.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Air Pollutants
/
analysis* Carbon Dioxide / analysis Carbon Monoxide / analysis Environmental Monitoring / methods* Hydrocarbons / analysis Montana Nitrogen Oxides / analysis Off-Road Motor Vehicles* Vehicle Emissions / analysis* |
| Chemical | |
Reg. No./Substance:
|
0/Air Pollutants; 0/Hydrocarbons; 0/Nitrogen Oxides; 0/Vehicle Emissions; 124-38-9/Carbon Dioxide; 630-08-0/Carbon Monoxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: A robust method for estimating landfill methane emissions.
Next Document: Particulate matter emission factors for almond harvest as a function of harvester speed.