A residence time probability analysis of sulfur concentrations at grand Canyon National Park

Ashbaugh, Lowell L.; Malm, William C.; Sadeh, Willy Z.

doi:10.1016/0004-6981(85)90256-2

Cited by 666 publications

(365 citation statements)

References 3 publications

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“…Originally it was developed by Ashbaugh et al (1985) and was previously applied in numerous studies, including high-latitude studies such as Dall'Osto et al (2017b) (Antarctic) and Yli-Tuomi et al (2003) (Arctic). This model is commonly used to identify regions that have the potential to contribute to high values of measured concentrations at a receptor site.…”

Section: Pscf Analysismentioning

confidence: 99%

Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring–summer transition in May 2014

et al. 2018

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Abstract. Within the framework of the RACEPAC (Radiation-Aerosol-Cloud Experiment in the Arctic Circle) project, the Arctic aerosol, arriving at a ground-based station in Tuktoyaktuk (Mackenzie River delta area, Canada), was characterized during a period of 3 weeks in May 2014. Basic meteorological parameters and particle number size distributions (PNSDs) were observed and two distinct types of air masses were found. One type were typical Arctic haze air masses, termed accumulation-type air masses, characterized by a monomodal PNSD with a pronounced accumulation mode at sizes above 100 nm. These air masses were observed during a period when back trajectories indicate an air mass origin in the north-east of Canada. The other air mass type is characterized by a bimodal PNSD with a clear minimum around 90 nm and with an Aitken mode consisting of freshly formed aerosol particles. Back trajectories indicate that these air masses, termed Aitken-type air masses, originated from the North Pacific. In addition, the application of the PSCF receptor model shows that air masses with their origin in active fire areas in central Canada and Siberia, in areas of industrial anthropogenic pollution (Norilsk and Prudhoe Bay Oil Field) and the north-west Pacific have enhanced total particle number concentrations (N CN ). Generally, N CN ranged from 20 to 500 cm −3 , while cloud condensation nuclei (CCN) number concentrations were found to cover a range from less than 10 up to 250 cm −3 for a supersaturation (SS) between 0.1 and 0.7 %. The hygroscopicity parameter κ of the CCN was determined to be 0.23 on average and variations in κ were largely attributed to measurement uncertainties.Furthermore, simultaneous PNSD measurements at the ground station and on the Polar 6 research aircraft were performed. We found a good agreement of ground-based PNSDs with those measured between 200 and 1200 m. During two of the four overflights, particle number concentrations at 3000 m were found to be up to 20 times higher than those measured below 2000 m; for one of these two flights, PNSDs measured above 2000 m showed a different shape than those measured at lower altitudes. This is indicative of long-range transport from lower latitudes into the Arctic that can advect aerosol from different regions in different heights.

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Section: Pscf Analysismentioning

confidence: 99%

Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring–summer transition in May 2014

et al. 2018

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“…Developed by Ashbaugh et al (1985), a CPF plot can be specifically used to determine possible local source regions using wind direction data (Begum et al 2004;Kim and Hopke 2004a;Kim et al 2004;Nicolás et al 2009a). This method combines the contributions of each source from the PMF and meteorological data (wind direction and velocity) to evaluate the influence of a local source upon the receptor site.…”

Section: Positive Matrix Factorization and Conditional Probability Fumentioning

confidence: 99%

PM10 source apportionment in the surroundings of the San Vicente del Raspeig cement plant complex in southeastern Spain

Yubero

Carratalá

Crespo

et al. 2010

Environ Sci Pollut Res

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Introduction The concentrations of trace metals, ionic species, and carbonaceous components in PM 10 (particulate matter with aerodynamic diameters smaller than 10 µm) were measured from samples collected near an industrial complex, primarily composed of cement plants, in southeastern Spain, from September 2005 to August 2006. Materials and methods Positive matrix factorization and conditional probability function were applied to this data set to identify different types of sources. Results Six significant sources were identified: crustal matter, traffic, aged sea salt, industrial emissions, secondary aerosol, and sea salt. The difficulty of separating anthropogenic sources from those of natural origin is highlighted in this study; in particular, the crustal source can be connected with both natural (African outbreaks, wind resuspension) and man-made emissions, like fugitive emissions in an industrial environment.

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“…18 The analysis can be defined as the conditional probability that an air parcel with a level of pollutant concentration above a criterion arrives at a receptor site having passed through a specific geographical area. 19 Fundaments of the analysis can be described such that the trajectory end point lies at a grid cell of address i, j, and the trajectory is assumed to collect material emitted in the grid cell.…”

Section: Pscfmentioning

confidence: 99%

Source Identification and Trends in Concentrations of Gaseous and Fine Particulate Principal Species in Seoul, South Korea

Kang

Kang²,

Lee

2006

Journal of the Air & Waste Management Association

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Ambient measurements were made using two sets of annular denuder system during the four seasons (April 2001 to February 2002 and were then compared with the results during the period of 1996 -1997 to estimate the trends and seasonal variations in concentrations of gaseous and fine particulate matter (PM 2.5 ) principal species. Annual averages of gaseous HNO 3 and NH 3 increased by 11% and 6%, respectively, compared with those of the previous study, whereas HONO and SO 2 decreased by 11% and 136%, respectively. The PM 2.5 concentration decreased by ϳ17%, 35% for SO 4 2Ϫ , and 29% for NH 4 ϩ , whereas NO 3 Ϫ increased by 21%. Organic carbon (OC) and elemental carbon (EC) were 12.8 and 5.98 g/m Ϫ3

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A residence time probability analysis of sulfur concentrations at grand Canyon National Park

Cited by 666 publications

References 3 publications

Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring–summer transition in May 2014

Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring–summer transition in May 2014

PM10 source apportionment in the surroundings of the San Vicente del Raspeig cement plant complex in southeastern Spain

Source Identification and Trends in Concentrations of Gaseous and Fine Particulate Principal Species in Seoul, South Korea

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