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Potential Impacts of Climate Change on Tropospheric Ozone in California: A Preliminary Episodic Modeling Assessment of the Los Angeles Basin and the Sacramento Valley

Description: In this preliminary and relatively short modeling effort, an initial assessment is made for the potential air quality implications of climate change in California. The focus is mainly on the effects of changes in temperature and related meteorological and emission factors on ozone formation. Photochemical modeling is performed for two areas in the state: the Los Angeles Basin and the Sacramento Valley.
Date: January 1, 2001
Creator: Taha, Haider
Partner: UNT Libraries Government Documents Department
open access

Control of Metallurgical and mineral dusts and fumes in Los Angeles County, California

Description: Report issued by the U.S. Bureau of Mines discussing metallurgical and mineral fumes and dusts in Los Angeles County, California. Properties of dusts and fumes from different minerals are presented. This report includes tables, maps, illustrations, and photographs.
Date: April 1952
Creator: Allen, Glenn L.; Viets, Floyd H. & McCabe, Louis C.
Partner: UNT Libraries Government Documents Department
open access

Using Biofuel Tracers to Study Alternative Combustion Regimes

Description: Interest in the use of alternative fuels and combustion regimes is increasing as the price of petroleum climbs. The inherently higher efficiency of Diesel engines has led to increased adoption of Diesels in Europe, capturing approximately 40% of the new passenger car market. Unfortunately, lower CO{sub 2} emissions are countered with higher nitrogen oxides (NOx) and particulate matter (PM) emissions, and higher noise. Noise and PM have traditionally been the obstacles toward consumer acceptance… more
Date: February 14, 2006
Creator: Mack, J. H.; Flowers, D. L.; Buchholz, B. A. & Dibble, R. W.
Partner: UNT Libraries Government Documents Department
open access

Technical Report on Grant

Description: This research project employed a combination of laboratory, field and modeling activities to explore the fate of reactive species in the atmosphere. Our work focused particularly on the behavior of hydroperoxides and their precursors, hydroperoxy radicals. Initially, we pursed the study of these species to elucidate the role they play in the formation of photochemical smog. In recent years, we have extended our studies to the role of these oxidants in forming aerosol particles, due the potentia… more
Date: November 21, 2006
Creator: Weinstein-Lloyd, Judith B.
Partner: UNT Libraries Government Documents Department
open access

Reducing indoor residential exposures to outdoor pollutants

Description: The basic strategy for providing indoor air quality in residences is to dilute indoor sources with outdoor air. This strategy assumes that the outdoor air does not have pollutants at harmful levels or that the outdoor air is, at least, less polluted than the indoor air. When this is not the case, different strategies need to be employed to ensure adequate air quality in the indoor environment. These strategies include ventilation systems, filtration and other measures. These strategies can be u… more
Date: July 1, 2003
Creator: Sherman, Max H. & Matson, Nance E.
Partner: UNT Libraries Government Documents Department
open access

7th BOC Priestley Conference. Final technical report, May 1, 1994--April 30, 1995

Description: The 1994 BOC Priestly Conference was held at Bucknell University in Lewisburg, PA, from June 24 through June 27, 1994. This conference, managed by the American Chemical Society (ACS), was a joint celebration with the Royal Society of Chemistry (RSC) commemorating Joseph Priestley`s arrival in the US and his discovery of oxygen. There were 120 attendees. The basic theme of the conference was Oxidants and Oxidation in the Earth`s Atmosphere, with a keynote lecture on the history of ozone. A disti… more
Date: July 1, 1995
Partner: UNT Libraries Government Documents Department
open access

Environmental Chamber Studies of Atmospheric Reactivities of Volatile Organic Compounds: Effects of Varying Chamber and Light Source

Description: Photochemical oxidant models are essential tools for assessing effects of emissions changes on ground-level ozone formation. Such models are needed for predicting the ozone impacts of increased alternative fuel use. The gas-phase photochemical mechanism is an important component of these models because ozone is not emitted directly, but is formed from the gas-phase photochemical reactions of the emitted volatile organic compounds (VOCs) and oxides of nitrogen (NO{sub x}) in air. The chemistry o… more
Date: May 1, 1995
Creator: Carter, W.; Luo, D.; Malkina, I. & Pierce, J.
Partner: UNT Libraries Government Documents Department
open access

Impacts of cool cities on air quality: A preliminary modeling assessment for Nashville TN, Dallas TX and Atlanta GA

Description: Previous atmospheric modeling efforts that concentrated on the Los Angeles Basin suggested beneficial and significant air quality impacts from cool cities strategies. This paper discusses an extension of similar modeling efforts to three regions, Atlanta GA, Dallas - Ft. Worth TX, and Nashville TN, that experience smog and air quality problems. According to the older ozone air quality standard (120 ppb), these regions were classified as serious, moderate, and marginal, respectively, but may be … more
Date: June 15, 1998
Creator: Taha, Haider
Partner: UNT Libraries Government Documents Department
open access

Final Technical Report: DE-FG03-01ER63099/DE-FG02-01ER63099

Description: Organic material contributes {approx}20-50% to the total fine aerosol mass at continental mid-latitudes (Saxena and Hildemann, 1996; Murphy et al., 1998; Peterson and Tyler, 2002; Putaud et al., 2004) and as much as 90% in tropical forested areas (Andreae and Crutzen, 1997; Artaxo et al., 2002). Significant amounts of carbonaceous aerosols are also observed in the free troposphere (Heald et al., 2005). A substantial fraction of the organic component of atmospheric particles consists of water-so… more
Date: February 23, 2005
Creator: Seinfeld, John H.
Partner: UNT Libraries Government Documents Department
open access

[News Script: Weather intro]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about stagnant weather conditions causing baothersome conditions.
Date: September 12, 1972, 12:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

A Numerical Investigation into the Anomalous Slight NOx Increase when Burning Biodiesel: A New (Old) Theory

Description: Biodiesel is a notable alternative to petroleum derived diesel fuel because it comes from natural domestic sources and thus reduces dependence on diminishing petroleum fuel from foreign sources, it likely lowers lifecycle greenhouse gas emissions, and it lowers an engine's emission of most pollutants as compared to petroleum derived diesel. However, the use of biodiesel often slightly increases a diesel engine's emission of smog forming nitrogen oxides (NO{sub x}) relative to petroleum diesel. … more
Date: January 30, 2007
Creator: Ban-Weiss, G. A.; Chen, J. Y.; Buchholz, B. A. & Dibble, R. W.
Partner: UNT Libraries Government Documents Department
open access

An investigation of flow regimes affecting the Mexico City region

Description: The Mexico City region is well-known to the meteorological community for its overwhelming air pollution problem. Several factors contribute to this predicament, namely, the 20 million people and vast amount of industry within the city. The unique geographical setting of the basin encompassing Mexico City also plays an important role. This basin covers approximately 5000 km{sup 2} of the Mexican Plateau at an average elevation of 2250 m above sea level (asl) and is surrounded on three sides by m… more
Date: May 1, 1995
Creator: Bossert, James E.
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Ozone]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 17, 1993, 6:00 p.m.
Duration: 1 minute 57 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Energy Saving Potentials and Air Quality Benefits of Urban HeatIslandMitigation

Description: Urban areas tend to have higher air temperatures than their rural surroundings as a result of gradual surface modifications that include replacing the natural vegetation with buildings and roads. The term ''Urban Heat Island'' describes this phenomenon. The surfaces of buildings and pavements absorb solar radiation and become extremely hot, which in turn warm the surrounding air. Cities that have been ''paved over'' do not receive the benefit of the natural cooling effect of vegetation. As the … more
Date: August 23, 2005
Creator: Akbari, Hashem
Partner: UNT Libraries Government Documents Department
open access

Advanced quadrupole ion trap instrumentation for low level vehicle emissions measurements. CRADA final report for number ORNL93-0238

Description: Quadrupole ion trap mass spectrometry has been evaluated for its potential use in vehicle emissions measurements in vehicle test facilities as an analyzer for the top 15 compounds contributing to smog generation. A variety of ionization methods were explored including ion trap in situ chemical ionization, atmospheric sampling glow discharge ionization, and nitric oxide chemical ionization in a glow discharge ionization source coupled with anion trap mass spectrometer. Emphasis was placed on the… more
Date: September 1, 1997
Creator: McLuckey, S. A.; Buchanan, M. V.; Asano, K. G.; Hart, K. J.; Goeringer, D. E. & Dearth, M. A.
Partner: UNT Libraries Government Documents Department
open access

Cool Colored Roofs to Save Energy and Improve Air Quality

Description: Urban areas tend to have higher air temperatures than their rural surroundings as a result of gradual surface modifications that include replacing the natural vegetation with buildings and roads. The term ''Urban Heat Island'' describes this phenomenon. The surfaces of buildings and pavements absorb solar radiation and become extremely hot, which in turn warm the surrounding air. Cities that have been ''paved over'' do not receive the benefit of the natural cooling effect of vegetation. As the … more
Date: August 23, 2005
Creator: Akbari, Hashem; Levinson, Ronnen; Miller, William & Berdahl, Paul
Partner: UNT Libraries Government Documents Department
open access

[News Script: Health]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about the smog in Houston.
Date: September 14, 1972, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Smog]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about the city of Dallas attempting to curb the air pollution issue.
Date: January 26, 1955
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

ASHRAE and residential ventilation

Description: In the last quarter of a century, the western world has become increasingly aware of environmental threats to health and safety. During this period, people psychologically retreated away from outdoors hazards such as pesticides, smog, lead, oil spills, and dioxin to the seeming security of their homes. However, the indoor environment may not be healthier than the outdoor environment, as has become more apparent over the past few years with issues such as mold, formaldehyde, and sick-building sy… more
Date: October 1, 2003
Creator: Sherman, Max H.
Partner: UNT Libraries Government Documents Department
open access

[News Script: Smog-ring]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: December 11, 1970, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

[News Script: Air pollution]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story about Fort Worth attempting to solve its air pollution problem.
Date: September 20, 1968
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

National impacts on visual air quality from a future energy scenario

Description: A methodology was developed to evaluate impacts on atmospheric visual air quality for nonurban areas caused by regional haze. Estimated values of median visual range for 39 nonurban ambient air quality monitoring sites were shown to have a high correlation with observed values. A decline in median visual range is projected in regions of the west and the Gulf Coast where there is a substantial growth in the combustion of sulfur containing fossil fuels - coal in particular. The projected decline … more
Date: January 1, 1979
Creator: Nochumson, D.; Wecksung, M. & Gurule, G.
Partner: UNT Libraries Government Documents Department
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