Author: Publisher:
ISBN:
Category : Air
Languages : en
Pages : 76
Book Description
An Assessment of the Effects of Human-caused Air Pollution on Resources Within the Interior Columbia River Basin
Author: An Assessment of the Effects of Human-caused Air Pollution on Resources Within the Interior Columbia River Basin
Author: Air Pollution and Its Impacts on U.S. National Parks
Author: Timothy J. SullivanPublisher: CRC Press
ISBN: 1351671928
Category : Science
Languages : en
Pages : 565
Book Description
A variety of air pollutants are emitted into the atmosphere from human-caused and natural emissions sources throughout the United States and elsewhere. These contaminants impact sensitive natural resources in wilderness, including the national parks. The system of national parks in the United States is among our greatest assets. This book provides a compilation and synthesis of current scientific understanding regarding the causes and effects of these pollutants within national park lands. It describes pollutant emissions, deposition, and exposures; it identifies the critical (tipping point) loads of pollutant deposition at which adverse impacts are manifested.
General Technical Report PNW-GTR
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 882
Book Description
Biomonitoring of Environmental Status and Trends (BEST) Program
Author: Regional Pollution Potential in the Northwestern United States
Author: Sue A. FergusonPublisher:
ISBN:
Category : Air
Languages : en
Pages : 32
Book Description
The potential for air pollution from industrial sources to reach wilderness areas throughout the Northwestern United States is approximated from monthly mean emissions, along with wind speeds and directions. A simple index is derived to estimate downwind concentration. Maps of pollution potential were generated for each pollution component (particulates, sulfur oxides, nitrogen oxides, and ammonia), months representing each season (January, April, July, and October), and each of three vertical levels: surface, 850 mb, and 700 mb. Mixing heights for the last 40 years are used to help determine which trajectory levels best represent each month. Wind frequencies for the same period help show variability and inherent uncertainty in using mean monthly data for pollution-potential estimates.
Wilderness Science in a Time of Change Conference
Author: Wilderness Science in a Time of Change Conference: Wilderness ecosystems, threats, and management
Author: Proceedings RMRS.
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 398
Book Description
A Year in Review for the Pacific Northwest Research Station
Author: Pacific Northwest Research Station (Portland, Or.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 116
Book Description