Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Potential particulate impacts at the Grand Canyon from northwestern Mexico
Autore:
Eatough, DJ; Green, M; Moran, W; Farber, R;
Indirizzi:
Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA Brigham YoungUniv Provo UT USA 84602 Chem & Biochem, Provo, UT 84602 USA Desert Res Inst, Las Vegas, NV USA Desert Res Inst Las Vegas NV USADesert Res Inst, Las Vegas, NV USA Sol Calif Edison, Rosemead, CA USA Sol Calif Edison Rosemead CA USASol Calif Edison, Rosemead, CA USA
Titolo Testata:
SCIENCE OF THE TOTAL ENVIRONMENT
fascicolo: 1-3, volume: 276, anno: 2001,
pagine: 69 - 82
SICI:
0048-9697(20010810)276:1-3<69:PPIATG>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROJECT MOHAVE; SOURCE APPORTIONMENT; SULFUR-OXIDES; TRANSPORT; CALIFORNIA; SULFATE; SOX;
Keywords:
project MOHAVE; Mexico; air quality; visibility; sulfate; emissions;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Eatough, DJ Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA Brigham Young Univ Provo UT USA 84602 em, Provo, UT 84602 USA
Citazione:
D.J. Eatough et al., "Potential particulate impacts at the Grand Canyon from northwestern Mexico", SCI TOTAL E, 276(1-3), 2001, pp. 69-82

Abstract

Project MOHAVE was a major air quality and visibility research program conducted from 1990 to 1999 to investigate the causes of visibility impairmentin the Grand Canyon National Park region. At Meadview, a remote monitoringsite just west of the Grand Canyon National Park, on September 1 and 2, 1992, the concentrations of sulfate (3.1 and 4.3 mug sulfate/m(3)) were the highest seen in 6 years of monitoring at this site. During this period, the concentrations of SO, at Meadview were also abnormally high and approximately three times the sulfate concentrations, on a nmol/m(3) basis. High concentrations of sulfate and SO2 extended south into southern Arizona and northwestern Mexico. Based on ambient atmospheric conditions, emissions from theMohave Power Project (MPP) 110 km upwind of Meadview could not have been responsible for the majority of the regionally observed sulfur oxides. The geographical distribution of SO2 and sulfate, and available source information suggest that northwestern Mexico was a significant source of the unusually high observed sulfur oxides. A CMB model developed during Project MOHAVEwas used to apportion sulfur oxides at Meadview and other sampling sites throughout the study region for August 31-September 2, 1992. The results indicate that the contribution of MPP to sulfate at Meadview was typical. However, the transport of SOx from northwestern Mexico was elevated throughout much of the region during this time period. This led to the large increase in sulfate concentrations at Meadview on September 1 and 2. These results indicate that emissions from Mexico can be a significant source of particulate material in the Grand Canyon. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 16:04:43