Measurement and analysis of atmospheric ammonia emissions from anaerobic lagoons

Aneja, Viney P.; Bunton, B.; Walker, John S.; Malik, Brahm P.

doi:10.1016/s1352-2310(00)00547-1

Cited by 87 publications

(54 citation statements)

References 23 publications

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“…This is a sufficient amount of spinup time, given that the atmospheric lifetime of NH 3 is typically up to 1 day (Seinfeld and Pandis, 1998;Aneja et al, 2001), and given that it is close to the transport time of air crossing the larger North American domain. The time period from 12 August to 7 September was chosen to coincide with the intensive measurement campaign described in Sect.…”

Section: Model Setup For Three Scenariosmentioning

confidence: 99%

“…NH 3 has an atmospheric lifetime of hours to a day (Seinfeld and Pandis, 1998; Aneja et al, 2001). It is a base that reacts in the atmosphere with sulphuric acid (H 2 SO 4 ) and nitric acid (HNO 3 ) to form crystalline sulphate, nitrate salts (e.g., (NH 4 (Nenes et al, 1998;Makar et al, 2003), which are significant components of fine particulate matter (PM 2.5 ; e.g., Jimenez et al, 2009;Environment Canada, 2001), thus having health (Pope III et al, 2002;Lee et al, 2015) and climate impacts (IPCC, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Contributions of natural and anthropogenic sources to ambient ammonia in the Athabasca Oil Sands and north-western Canada

et al. 2018

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Abstract. Atmospheric ammonia (NH 3 ) is a short-lived pollutant that plays an important role in aerosol chemistry and nitrogen deposition. Dominant NH 3 emissions are from agriculture and forest fires, both of which are increasing globally. Even remote regions with relatively low ambient NH 3 concentrations, such as northern Alberta and Saskatchewan in northern Canada, may be of interest because of industrial oil sands emissions and a sensitive ecological system. A previous attempt to model NH 3 in the region showed a substantial negative bias compared to satellite and aircraft observations. Known missing sources of NH 3 in the model were re-emission of NH 3 from plants and soils (bidirectional flux) and forest fire emissions, but the relative impact of these sources on NH 3 concentrations was unknown. Here we have used a research version of the high-resolution air quality forecasting model, GEM-MACH, to quantify the relative impacts of semi-natural (bidirectional flux of NH 3 and forest fire emissions) and direct anthropogenic (oil sand operations, combustion of fossil fuels, and agriculture) sources on ammonia volume mixing ratios, both at the surface and aloft, with a focus on the Athabasca Oil Sands region during a measurement-intensive campaign in the summer of 2013. The addition of fires and bidirectional flux to GEM-MACH has improved the model bias, slope, and correlation coefficients relative to ground, aircraft, and satellite NH 3 measurements significantly.By running the GEM-MACH-Bidi model in three configurations and calculating their differences, we find that averaged over Alberta and Saskatchewan during this time period an average of 23.1 % of surface NH 3 came from direct anthropogenic sources, 56.6 % (or 1.24 ppbv) from bidirectional flux (re-emission from plants and soils), and 20.3 % (or 0.42 ppbv) from forest fires. In the NH 3 total column, an average of 19.5 % came from direct anthropogenic sources, 50.0 % from bidirectional flux, and 30.5 % from forest fires. The addition of bidirectional flux and fire emissions caused the overall average net deposition of NH x across the domain to be increased by 24.5 %. Note that forest fires are very episodic and their contributions will vary significantly for different time periods and regions.This study is the first use of the bidirectional flux scheme in GEM-MACH, which could be generalized for other volatile or semi-volatile species. It is also the first time CrIS (Cross-track Infrared Sounder) satellite observations of NH 3 have been used for model evaluation, and the first use of fire emissions in GEM-MACH at 2.5 km resolution.

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Section: Model Setup For Three Scenariosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Contributions of natural and anthropogenic sources to ambient ammonia in the Athabasca Oil Sands and north-western Canada

et al. 2018

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“…Previously, there was little research on NH 3 emissions in the U.S., but research activity has increased in the past few years. Progress is being made in developing measurement equipment and methods (Heber et al, , 2002a(Heber et al, , 2002bAneja et al, 2001;Harper et al, 2000;Todd et al, 2001;Zahn et al, 2001Zahn et al, , 2002, but cost and lack of continuous measurement capability has hindered development of reliable annual emission factors.…”

Section: Developing Ammonia Emission Factorsmentioning

confidence: 99%

A Review of Ammonia Emissions From Confined Swine Feeding Operations

Arogo¹,

Westerman²,

Heber³

2003

Transactions of the ASAE

105

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“…Over the past decade, NH 3 has been intensively studied in many countries (McCulloch et al, 1998;Aneja et al, 2000;Walker et al, 2000aWalker et al, , 2000bAneja et al, 2001;Pryor et al, 2001;Rattray et al, 2001;Robarge et al, 2002;Sather et al, 2008;Cao et al, 2009). However, research into NH 3 in different environmental matrices is still at an early stage in southern Taiwan.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Ambient Ammonia Levels Measured in Three Different Industrial Parks in Southern Taiwan

Hsieh

Chen

2010

Aerosol Air Qual. Res.

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To characterize concentrations of atmospheric ammonia (NH 3 ) at industrial parks in southern Taiwan, three representative industrial parks and two background locations were selected for this study. The sampling process for gaseous ammonia was performed in accordance with Taiwan EPA NIEA A426.71B. The results revealed that the mean NH 3 levels ranged from 70.5 to 153.9 ppb (mean = 100.2 ppb) in Neipu Industrial Park. Both highest mean levels in Neipu Industrial Park during 12:00-13:00 in the daytime and during 20:00-21:00 at night were about 50-150 times greater than ambient background levels. For the whole day, the mean NH 3 levels ranged from 43.0 to 114.6 ppb (mean = 72.8 ppb) in Pingtung Industrial Park. In Pingnan Industrial Park, the mean NH 3 levels for the whole day ranged from 45.0 to 122.6 ppb (mean = 84.9 ppb). Moreover, the ratio values (Rs) were categorized according to the cover-range (from minimum ratios to maximum ratios) at different sampling periods and the minimum separated boundary lines. The results indicate that the characteristics of ratio values normalized by the background levels can be divided into three main categories in southern Taiwan: (1) R > 200; (2) R > 60; (3) R > 10. Our research data reveal obvious reasons for this clear distinction of ambient NH 3 levels in southern Taiwan. Significantly, the results reveal that agricultural NH 3 emissions influence local ambient concentrations of NH 3 .

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Measurement and analysis of atmospheric ammonia emissions from anaerobic lagoons

Cited by 87 publications

References 23 publications

Contributions of natural and anthropogenic sources to ambient ammonia in the Athabasca Oil Sands and north-western Canada

Contributions of natural and anthropogenic sources to ambient ammonia in the Athabasca Oil Sands and north-western Canada

A Review of Ammonia Emissions From Confined Swine Feeding Operations

Characteristics of Ambient Ammonia Levels Measured in Three Different Industrial Parks in Southern Taiwan

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