Dispersion limitations of oxidation in power plant plumes during long-range transport

Cocks, Alan T.; Kallend, A. S.; Marsh, A. R. W.

doi:10.1038/305122a0

Cited by 33 publications

(10 citation statements)

References 8 publications

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“…It was suggested that over land higher horizontal turbulence generated by topographic features causes greater lateral dispersion and the reason for the low value of K y measured is the generally lower rate of lateral spread over the sea (Crabtree, 1984). In an extreme case of poor lateral dispersion, distinct plumes were still distinguishable on the far side of the North Sea from power station sources 150 km apart (Cocks et al, 1983). Low rates of lateral spread will tend to cause longer-range episodes of high concentration.…”

Section: Empirical Measurements Of Plumes At Medium Distancesmentioning

confidence: 96%

Meteorological factors influencing the occurrence of air pollution episodes involving chimney plumes

Fisher

2002

Meteorological Applications

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Section: Empirical Measurements Of Plumes At Medium Distancesmentioning

confidence: 96%

Meteorological factors influencing the occurrence of air pollution episodes involving chimney plumes

Fisher

2002

Meteorological Applications

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“…is faster as compared to the mixing rate that leads to the ozone deficit within the plume, relative to the background air [11]. Such reaction leads to the negative correlation of the mercury and ozone concentrations (Figure 9).…”

Section: Short-term Variationsmentioning

confidence: 98%

Air Mercury Monitoring at the Baikal Area

et al. 2021

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The GMOS (Global Mercury Observation System) project has the overall goal to develop a coordinated observing system to monitor mercury on a global scale. Here we present the long-term (2011–2020) air mercury monitoring data obtained at the Listvyanka station located at a shore of Lake Baikal, Siberia. The long-term monitoring shows obvious seasonal variation of the background mercury concentration in air, which increases in the cold and decreases in the warm season. The short-term anomalies are associated with the wind carrying the air from the industrial areas where several big coal-fired power plants are located. A positive correlation between the mercury, SO2 and NO2 concentrations is observed both in the short-term variations and in the monthly average concentrations. The analysis of forward and backward trajectories obtained with the HYSPLIT model demonstrates revealing of the mercury emissions sources. During the cruise of 2018, the continuous air mercury survey over Lake Baikal covered 1800 km. The average mercury concentration over Baikal is notably less in comparison with the average value obtained at the onshore Listvyanka station during the same days of the cruise. That can lead to the conclusion that Baikal is a significant sink of the atmospheric mercury.

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“…Despite the observed high concentrations of SO 2 along the Listvyanka-Khuzhir route (Olkhon Island), the concentrations of nitrogen oxides (NO, NO 2 ) remained at the background level (3-7 µg m −3 ) (Figure 4a), although their concentrations usually increase synchronously with SO 2 concentrations. It is known that the rate of NO 2 oxidation is five times higher than that of SO 2 , that is gaseous nitrogen oxides are transformed into nitrates faster than sulfur dioxide into sulfates [44]. Therefore, the absence of nitrogen dioxide at high concentrations of SO 2 may mean that, possibly, the detected plume of SO 2 pollution near the southwestern coast accumulated for a rather long time (up to several hours), and gaseous nitrogen oxides had time to oxidize to nitrates.…”

Section: Kabanskmentioning

confidence: 99%

Spatial-Temporal Variability of Small Gas Impurities over Lake Baikal during the Forest Fires in the Summer of 2019

et al. 2020

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Lake Baikal—a unique ecosystem on a global scale—is undoubtedly of great interest for a comprehensive study of its ecosystem. In recent years, one of the most significant sources of atmospheric pollution in the Baikal region was the emission of smoke aerosol and trace gases from forest fires, the number of which is increasing in the region. The transport and accumulation of aerosol and small gas impurities over water area of Lake Baikal is observed every summer due to forest fires occurring in the boreal forests of Siberia. The atmosphere above the lake covers a huge area (31,500 km2) and is still a little-studied object. This article presents the results of experimental studies of ground-level ozone, sulfur dioxide, and nitrogen oxides in the atmosphere over Lake Baikal, carried out on a research vessel during the boreal forest fires in Siberia in the summer of 2019.

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Dispersion limitations of oxidation in power plant plumes during long-range transport

Cited by 33 publications

References 8 publications

Meteorological factors influencing the occurrence of air pollution episodes involving chimney plumes

Meteorological factors influencing the occurrence of air pollution episodes involving chimney plumes

Air Mercury Monitoring at the Baikal Area

Spatial-Temporal Variability of Small Gas Impurities over Lake Baikal during the Forest Fires in the Summer of 2019

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