Effect of long-range transport of sulphur and nitrogen oxides from large coal power plants on acidification of river waters in the Baikal region, East Siberia

2016 ◽  
Vol 73 (3) ◽  
pp. 452-461 ◽  
Author(s):  
Vladimir Obolkin ◽  
Tamara Khodzher ◽  
Larisa Sorokovikova ◽  
Irina Tomberg ◽  
Olga Netsvetaeva ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Long Range ◽  
Power Plants ◽  
Baikal Region ◽  
Long Range Transport ◽  
East Siberia ◽  
River Waters ◽  
Range Transport ◽  
Coal Power Plants ◽  
Coal Power

Long-range transport of plumes of atmospheric emissions from regional coal power plants to the South Baikal water basin

2017 ◽  
Vol 30 (4) ◽  
pp. 360-365 ◽  
Author(s):  
V. A. Obolkin ◽  
V. L. Potemkin ◽  
V. L. Makukhin ◽  
T. V. Khodzher ◽  
E. V. Chipanina
Keyword(s):  
Long Range ◽  
Power Plants ◽  
Long Range Transport ◽  
Atmospheric Emissions ◽  
Baikal Water ◽  
Water Basin ◽  
Range Transport ◽  
Coal Power Plants ◽  
Coal Power ◽  
South Baikal

scholarly journals Inconsistent decadal variations between surface and free tropospheric nitrogen oxides over United States

2017 ◽  
Author(s):  
Zhe Jiang ◽  
Helen Worden ◽  
John R. Worden ◽  
Daven K. Henze ◽  
Dylan B. A. Jones ◽  
...  
Keyword(s):  
United States ◽  
Air Quality ◽  
Nitrogen Oxides ◽  
Climate Variability ◽  
Long Range ◽  
North American ◽  
Long Range Transport ◽  
Substantial Impact ◽  
Decadal Scale ◽  
Range Transport

Abstract. Decreases in surface emissions of nitrogen oxides (NOx = NO + NO2) in North America have led to substantial improvements in air-quality over the last several decades. Here we show that satellite observations of tropospheric nitrogen dioxide (NO2) columns over the contiguous United States (US) do not decrease after about 2009, while surface NO2 concentrations continue to decline through to the present. This divergence, if it continues, could have a substantial impact on surface air quality due to mixing of free-tropospheric air into the boundary layer. Our results show only limited contributions from local effects such as fossil fuel emissions, lightning, or instrument artifacts, but we do find a possible relationship of NO2 changes to decadal climate variability. Our analysis demonstrates that the intensity of transpacific transport is stronger in El Niño years and weaker in La Niña years, and consequently, that decadal-scale climate variability impacts the contribution of Asian emissions on North American atmospheric composition. Because of the short lifetime, it is usually believed that the direct contribution of long-range transport to tropospheric NOx distribution is limited. If our hypothesis about transported Asian emissions is correct, then this observed divergence between satellite and surface NOx could indicate mechanisms that allow for either NOx or its reservoir species to have a larger than expected effect on North American tropospheric composition. These results therefore suggest more aircraft and satellite studies to determine the possible missing processes in our understanding of the long-range transport of tropospheric NOx.

scholarly journals Source apportionment of the particulate PAHs at Seoul, Korea: impact of long range transport to a megacity

2007 ◽  
Vol 7 (13) ◽  
pp. 3587-3596 ◽  
Author(s):  
J. Y. Lee ◽  
Y. P. Kim
Keyword(s):  
Long Range ◽  
Biomass Burning ◽  
Air Pollutants ◽  
Power Plants ◽  
Total Concentration ◽  
Northeast Asia ◽  
Long Range Transport ◽  
Emission Data ◽  
Diesel Vehicles ◽  
Range Transport

Abstract. Northeast Asia including China, Korea, and Japan is one of the world's largest fossil fuel consumption regions. Seoul, Korea, is a megacity in Northeast Asia. Its emissions of air pollutants can affect the region, and in turn it is also affected by regional emissions. To understand the extent of these influences, major sources of ambient particulate PAHs in Seoul were identified and quantified based on measurements made between August 2002 and December 2003. The chemical mass balance (CMB) model was applied. Seven major emission sources were identified based on the emission data in Seoul and Northeast Asia: Gasoline and diesel vehicles, residential coal use, coke ovens, coal power plants, biomass burning, and natural gas (NG) combustion. The major sources of particulate PAHs in Seoul during the whole measurement period were gasoline and diesel vehicles, together accounted for 31% of the measured particulate PAHs levels. However, the source contributions showed distinct daily and seasonal variations. High contributions of biomass burning and coal (residential and coke oven) were observed in fall and winter, accounting for 63% and 82% of the total concentration of PAHs, respectively. Since these sources were not strong in and around Seoul, they are likely to be related to transport from outside of Seoul, from China and/or North Korea. This implies that the air quality in a mega-city such as Seoul can be influenced by the long range transport of air pollutants such as PAHs.

scholarly journals Potential genesis and implications of calcium nitrate in Antarctic snow

2015 ◽  
Vol 9 (6) ◽  
pp. 6125-6151
Author(s):  
K. Mahalinganathan ◽  
M. Thamban
Keyword(s):  
Nitrogen Oxides ◽  
Long Range ◽  
Mineral Dust ◽  
Strong Association ◽  
Calcium Nitrate ◽  
Dust Particles ◽  
Long Range Transport ◽  
Range Transport ◽  
Antarctic Snow ◽  
The Antarctic

Abstract. Among the large variety of particulates in the atmosphere, calcic mineral dust particles have highly reactive surfaces that undergo heterogeneous reactions with nitrogen oxides contiguously. The association between Ca2+, an important proxy indicator of mineral dust and NO3–, a dominant anion in the Antarctic snow pack was analysed. A total of 41 snow cores (~ 1 m each) that represent snow deposited during 2008–2009 were studied along coastal–inland transects from two different regions – the Princess Elizabeth Land (PEL) and central Dronning Maud Land (cDML) in East Antarctica. Correlation statistics showed a strong association (at 99 % significance level) between NO3– and Ca2+ at the near-coastal sections of both PEL (r = 0.72) and cDML (r = 0.76) transects. Similarly, a strong association between these ions was also observed in snow deposits at the inland sections of PEL (r = 0.8) and cDML (r = 0.85). Such systematic associations between Ca2+ and NO3– is attributed to the interaction between calcic mineral dust and nitrogen oxides in the atmosphere, leading to the possible formation of calcium nitrate (Ca(NO3)2). Forward and back trajectory analyses using HYSPLIT model v. 4 revealed that Southern South America (SSA) was an important dust emitting source to the study region, aided by the westerlies. Particle size distribution showed that over 90 % of the dust was in the range < 4 μm, indicating that these dust particles reached the Antarctic region via long range transport from the SSA region. We propose that the association between Ca2+ and NO3– occurs during the long range transport due to the formation of Ca(NO3)2. The Ca(NO3)2 thus formed in the atmosphere undergo deposition over Antarctica under the influence of anticyclonic polar easterlies. However, influence of local dust sources from the nunataks in cDML evidently mask such association in the mountainous region. The study indicates that the input of dust-bound NO3– may contribute a significant fraction of the total NO3– deposited in Antarctic snow.

Low-level atmospheric jets as main mechanism of long-range transport of power plant plumes in the Lake Baikal Region

2014 ◽  
pp. 1-7 ◽  
Author(s):  
Vladimir Arkadievich Obolkin ◽  
Vladimir Lvovich Potemkin ◽  
Vladimir Leonidovich Makukhin ◽  
Ylena Vladimirovna Chipanina ◽  
Irina Iozovna Marinayte
Keyword(s):  
Power Plant ◽  
Long Range ◽  
Lake Baikal ◽  
Baikal Region ◽  
Main Mechanism ◽  
Long Range Transport ◽  
Low Level ◽  
Lake Baikal Region ◽  
Range Transport

Springtime nitrogen oxides and tropospheric ozone in Svalbard: local and long-range transported air pollution

2021 ◽  
Author(s):  
Alena Dekhtyareva ◽  
Mark Hermanson ◽  
Anna Nikulina ◽  
Ove Hermansen ◽  
Tove Svendby ◽  
...  
Keyword(s):  
Air Pollution ◽  
Nitrogen Oxides ◽  
Long Range ◽  
Tropospheric Ozone ◽  
Large Scale ◽  
Weather Prediction ◽  
Long Range Transport ◽  
Synoptic Situation ◽  
Synoptic Conditions ◽  
Range Transport

&lt;p&gt;Svalbard is a near pristine Arctic environment, where long-range transport from mid-latitudes is an important air pollution source. Thus, several previous studies investigated the background nitrogen oxides (NO&lt;sub&gt;x&lt;/sub&gt;) and tropospheric ozone (O&lt;sub&gt;3&lt;/sub&gt;) springtime chemistry in the region. However, there are also local anthropogenic emission sources on the archipelago such as coal power plants, ships and snowmobiles, which may significantly alter in situ atmospheric composition.&amp;#160; Measurement results from three independent research projects were combined to identify the effect of emissions from various local sources on the background concentration of NO&lt;sub&gt;x&lt;/sub&gt; and O&lt;sub&gt;3&lt;/sub&gt; in Svalbard. The hourly meteorological and chemical data from the ground-based stations in Adventdalen, Ny-&amp;#197;lesund and Barentsburg were analysed along with daily radiosonde soundings and weekly data from O&lt;sub&gt;3&lt;/sub&gt; sondes. The data from the ERA5 reanalysis were used to evaluate the prevailing synoptic conditions during the fieldwork. Although the correlation between the NO&lt;sub&gt;x&lt;/sub&gt; concentrations in the three settlements was low due to dominant influence of the local atmospheric circulation, cases with common large-scale meteorological conditions increasing the local pollutant concentration at all sites were identified. In colder and calmer days and days with temperature inversions, the concentrations of NO&lt;sub&gt;x&lt;/sub&gt; were higher. In contrast to NO&lt;sub&gt;x&lt;/sub&gt; values, O&lt;sub&gt;3&lt;/sub&gt; concentrations in Barentsburg and at the Zeppelin station in Ny-&amp;#197;lesund correlated strongly, and hence the prevailing synoptic situation and long-range transport of air masses were controlling factors for them. The Lagrangian models HYSPLIT and FLEXPART have been used to investigate air mass transport and transformations during the large scale O&lt;sub&gt;3&lt;/sub&gt; depletion and enrichment events. The factors affecting Arctic springtime photochemistry of O&lt;sub&gt;3&lt;/sub&gt; have been investigated thoroughly using Lagrangian and Eulerian numerical weather prediction model data and Metop GOME-2 satellite observations.&lt;/p&gt;

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