نتایج جستجو برای: atmospheric dispersion model aermod

تعداد نتایج: 2209129  

2005
Bjorn Stevens

■ Abstract Various forms of atmospheric moist convection are reviewed through a consideration of three prevalent regimes: stratocumulus; trade-wind; and deep, precipitating, maritime convection. These regimes are chosen because they are structural components of the general circulation of the atmosphere and because they highlight distinguishing features of this polymorphous phenomenon. In partic...

2012
C. CLEMONS

We look at a game theoretic scenario in which an industrial firm has the option of voluntarily controlling the pollutants it originates. A regulating agency sets the tax rate on corporate profits as well as a Pigouvian pollution tax: preset percentages of projected cleanup cost which must be covered by the firm. The regulator spends tax revenue to cover the remaining percentage of cleanup costs...

2014
Vlad Isakov Saravanan Arunachalam Stuart Batterman Sarah Bereznicki Janet Burke Kathie Dionisio Val Garcia David Heist Steve Perry Michelle Snyder Alan Vette

A major challenge in traffic-related air pollution exposure studies is the lack of information regarding pollutant exposure characterization. Air quality modeling can provide spatially and temporally varying exposure estimates for examining relationships between traffic-related air pollutants and adverse health outcomes. A hybrid air quality modeling approach was used to estimate exposure to tr...

2006
F. B. Pyatt D. Amos J. P. Grattan A. J. Pyatt

The invertebrate populations of stony desert sites contaminated by ancient metalliferous activities in the Nabatean, Roman and Byzantine periods were significantly different from those found in adjacent ancient abandoned field systems. Consequently, it is apparent that such invertebrates potentially have uses as biomonitors of metalliferous pollution derived from ancient anthropogenic activitie...

Journal: :Environmental Modelling and Software 2006
J. M. González Cabrera M. R. Fidalgo Martínez E. J. Martín Mateos S. Vicente Tavera

Five-year data of SO2, PM10, NO, NO2, O3 and CO levels recorded at two air pollution monitoring stations in the city of Salamanca were analysed using a HJ-Biplot Simultaneous Representation analysis method in order to determine the possible relationships among the different pollutants and to gain insight into the temporal evolution of pollution in this city. Use of this statistical method prove...

2003
P. B. Lourenço P. Roca J. M. S. Matias C. A. S. Alves

The decay features of thirty-nine monuments built with granite stones and presenting diverse architectural characteristics, date of construction and environment characteristics (including exposition conditions, traffic intensity, etc) are compare in order to discuss decay patterns and susceptibility of granite types applied in architectural works. Decay patterns of biotite-rich medium to fine-g...

Journal: :Rel. Eng. & Sys. Safety 2014
Tim Bedford Kevin J. Wilson Alireza Daneshkhah

Probabilistic inversion is used to take expert uncertainty assessments about observable model outputs and build from them a distribution on the model parameters that captures the uncertainty expressed by the experts. In this paper we look at ways to use minimum information methods to do this, focussing in particular on the problem of ensuring consistency between expert assessments about differi...

Journal: :Environmental Modelling and Software 2008
F. Costabile I. Allegrini

Road transport has become by far the major source of environmental pollution and traffic congestion in urban areas. Though a lot of research has been done to investigate the functional relationship linking air quality and air pollution from transport, a further improvement in the knowing of this relationship is needed. The aim of this study was to analyze this relationship and to develop a more...

2003
James A. DeShazer

I h e efficiency of US agricultural production has increased through the use of machinery, biotechnology, and chemicals so that one farmer is now able to feed 100 Americans. During this past decade, however, many people, including those in the agricultural industry, have felt that more attention must be directed toward the preservation of the environment. Because agricultural practices such as ...

2009

Almond harvest accounts for a significant amount of PM10 emissions in California each harvest season. This paper addresses the adjustment of sweeper depth and its effect on PM10 emissions from sweeping and pickup operations. Ambient total suspended particulate (TSP) and PM10 sampling was conducted during harvest with alternating control (proper sweeper setting) and experimental treatment (sweep...

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