Journal ArticleDOI
Dependence of Air Quality in a Remote Location on Local and Mesoscale Transports: A Case Study
John J. Carroll,R.L. Baskett +1 more
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In this article, the results of a field study utilizing ground-based and aircraft measurements of meteorological parameters and several air pollutants are described for two summer periods in the vicinity of Yosemite National Park, California.Abstract:
The results of a field study utilizing ground-based and aircraft measurements of meteorological parameters and several air pollutants are described for two summer periods in the vicinity of Yosemite National Park, California. These results are related to observed air quality and atmospheric circulation patterns in neighboring parts of the state and to transport by the local mountain-valley wind system. The conclusion is reached that maximum air quality degradation in the study area does not occur during persistent periods of large-scale stagnation, but occurs as the result of transport from area sources up to 200 km away by the typical extended sea breeze circulation which develops following such a period.read more
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PM10 source apportionment in California's San Joaquin valley
Judith C. Chow,John G. Watson,Douglas H. Lowenthal,Paul A. Solomon,Karen L. Magliano,Steven D. Ziman,L.Willard Richards +6 more
TL;DR: The results of the source apportionment at all sites showed that geological contributions (fugitive dust from tilling, roadways, and construction) are largest in summer and fall months, while secondary ammonium nitrate contributions (deriving from direct emissions of ammonia and oxides of nitrogen from agricultural activities and engine exhaust) were largest during winter months.
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The Response of Western Forests to Air Pollution
TL;DR: The authors presented a summary of research conducted between 1986 and 1990 by the Western Conifers Research Co-Operative on the effects of acid rain and associated pollutants on the forests of the Western United States.
Journal ArticleDOI
Receptor model and emissions inventory source apportionments of nonmethane organic gases in California's San Joaquin valley and San Francisco bay area
TL;DR: In this paper, the chemical mass balance (CMB) receptor model was applied to the nonmethane organic gas (NMOG) database acquired during the San Joaquin Valley Air Quality Study (SJVAQS)/Atmospheric Utility Signatures-Predictions and Experiment (AUSPEX) Regional Model Adaptation Project (SARMAP) during SARMAP, the major contributors to NMOG were vehicle exhaust, liquid gasoline, gasoline vapor, oil production, acetone and unidentified organic compounds
Sea-breeze observations and modelling: a review
D.J. Abbs,W. L. Physick +1 more
TL;DR: An overview of sea-breeze characteristics and behaviour can be found in this paper, where the fine-scale structure of the head region, its behaviour in complex terraino and its ability to penetrate hundreds of kilometres inland are discussed.
Journal ArticleDOI
The spatial variation of ozone climatology on the Western slope of the Sierra Nevada
TL;DR: In this article, the spatial variability of ozone climatology is described for six remote sites on the western slope of the Sierra Nevada, and a statistical analysis is applied to determine relationships between ozone concentrations and atmospheric variables, as well as relationships among sites.
References
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Journal ArticleDOI
a Theory of Air Drainage.
TL;DR: In this paper, the authors derived an equation of motion for a compressible fluid cooling at the bottom by contact with a radiating surface of uniform slope and large extent, and concluded tentatively that the assumption of a frictional force which is proportional to the square of the velocity gives fairly realistic results.
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Oxidant air pollution in the central valley, Sierra Nevada foothills, and Mineral King Valley of California.
TL;DR: In situ formation of oxidant and diurnal changes in the temperature profile in Mineral King Valley were observed and evidence was recorded of the transport of photochemical smog from the Central Valley to Mineral King.
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marine air invasion of the Pacific Coast a problem analysis
TL;DR: In this article, the authors reviewed the literature on the main aspects of marine air invasion on the Pacific coast, in particular the sea breeze, Pacific coast monsoon, and airflow over coastal mountains.
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On the dissipation of drainage wind systems in valleys in morning hours
Journal ArticleDOI
Effects of various factors on valley winds
TL;DR: In this article, a relation is derived for the periodic valley wind as a function of time and elevation, in terms of the diurnal temperature variation, slope of the valley floor, eddy viscosity, the Coriolis force, and a pressure force representing the constraining effect of the cliff walls.