Meteorological and environmental aspects of one of the worst national air pollution episodes (January, 2004) in Logan, Cache Valley, Utah, USA

Malek, Esmaiel; Davis, Tess; Martin, Randal S.; Silva, Philip J.

doi:10.1016/j.atmosres.2005.05.003

Cited by 156 publications

(97 citation statements)

References 2 publications

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“…For example, the state of Utah found that the odds of an emergency department visit in Salt Lake County, with a primary diagnosis of asthma, are 42% greater during days 5-7 of prolonged inversions than for noninversion days (Beard et al, 2012). During a particularly extreme cold-air pool event in 2004, 24-hr average PM 2.5 concentrations exceeded 100 mg/m 3 (Malek et al, 2006), while more recent maximum daily average concentrations have been in the range of 50-70 mg/m 3 . Several previous studies have examined the sources of fine particulate matter along the Wasatch Front; however, compared to this work these studies used data that spanned a brief time period, on the order of weeks.…”

Section: Introductionmentioning

confidence: 99%

Receptor model source attributions for Utah's Salt Lake City airshed and the impacts of wintertime secondary ammonium nitrate and ammonium chloride aerosol

Kelly

Kotchenruther

Kuprov

et al. 2013

Journal of the Air & Waste Management Association

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Section: Introductionmentioning

confidence: 99%

Receptor model source attributions for Utah's Salt Lake City airshed and the impacts of wintertime secondary ammonium nitrate and ammonium chloride aerosol

Kelly

Kotchenruther

Kuprov

et al. 2013

Journal of the Air & Waste Management Association

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“…In 2014, livestock rearing and production contributed two thirds of the total agricultural NH 3 emissions in the 28 member countries of the European Union (EU-28) (UNECE 2016). NH 3 is an air pollutant and is detrimental to human health, as it contributes to the formation of particulate matter in the atmosphere (Malek et al 2006). Increased NH 3 emissions lead to eutrophication in lakes and rivers and acidification of soils.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the potential of dietary crude protein manipulation in reducing ammonia emissions from cattle and pig manure: A meta-analysis

Mohankumar

Amon

Ammon

et al. 2017

Nutr Cycl Agroecosyst

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Dietary manipulation of animal diets by reducing crude protein (CP) intake is a strategic NH 3 abatement option as it reduces the overall nitrogen input at the very beginning of the manure management chain. This study presents a comprehensive metaanalysis of scientific literature on NH 3 reductions following a reduction of CP in cattle and pig diets. Results indicate higher mean NH 3 reductions of 17 ± 6% per %-point CP reduction for cattle as compared to 11 ± 6% for pigs. Variability in NH 3 emission reduction estimates reported for different manure management stages and pig categories did not indicate a significant influence. Statistically significant relationships exist between CP reduction, NH 3 emissions and total ammoniacal nitrogen content in manure for both pigs and cattle, with cattle revealing higher NH 3 reductions and a clearer trend in relationships. This is attributed to the greater attention given to feed optimization in pigs relative to cattle and also due to the specific physiology of ruminants to efficiently recycle nitrogen in situations of low protein intake. The higher NH 3 reductions in cattle highlights the opportunity to extend concepts of feed optimization from pigs and poultry to cattle production systems to further reduce NH 3 emissions from livestock manure. The results presented help to accurately quantify the effects of NH 3 abatement following reduced CP levels in animal diets distinguishing between animal types and other physiological factors. This is useful in the development of emission factors associated with reduced CP as an NH 3 abatement option.

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“…Kukkonen et al (2005) in their study of air pollution episodes in four European cities associate the presence of persisting temperature inversions with synoptic systems of high pressure and high-pressure ridges. Malek et al (2006) in a study of a severe air pollution episode in Logan, Utah (USA), also associate the presence of a strong temperature inversion with a high-pressure weather system. In this work, the first systematic effort to quantitatively express the effect of prevailing weather on the inversion layers is attempted, linking directly the main weather types with the statistics of inversions.…”

Section: Introductionmentioning

confidence: 99%

The effect of the prevailing weather on the statistics of atmospheric temperature inversions

Milionis

Davies

2007

Intl Journal of Climatology

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ABSTRACT:The unanimously accepted dependence of the static stability of the lower troposphere on the prevailing weather has, so far, not been expressed quantitatively. This work is the first systematic attempt at expressing this dependence quantitatively. Two weather classifications, an index expressing the activity of the atmospheric temperature inversion layers, and various other inversion statistics are considered for this purpose. Radiosonde data from Hemsby (UK) are used. Lamb's weather classification, which is used initially, shows clear differences in the statistics of inversions for different weather classes. The anticyclonic class is associated with the maximum activity, and the cyclonic class with the minimum activity. The weather class is also shown to affect the vertical variation of the activity of inversions. Differences in the activity of inversions due to the weather class are maximized in the layer 900-800 mb. Given that it is within this layer where the top of the atmospheric boundary layer is usually found, this result is of particular importance for air pollution modelling. An alternative weather classification is also used with the objective of associating inversion statistics not just to a particular weather type, but also to the physical reasons that are responsible for their formation. This classification shows that, in the absence of an anticyclone, the activity of inversions is rather independent of the prevailing weather pattern. However, when the anticyclonic category is also included, the differences become significant. As the results of this work express quantitatively the strong dependence of inversion statistics on the prevailing weather, they can be used for the creation of correction factors for many characteristics related to an inversion climatology (e.g. for the annual cycle of the activity of inversions). Such corrections are necessary in cases where the weather types in the study period do not reflect their frequency in the average climate.

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Meteorological and environmental aspects of one of the worst national air pollution episodes (January, 2004) in Logan, Cache Valley, Utah, USA

Cited by 156 publications

References 2 publications

Receptor model source attributions for Utah's Salt Lake City airshed and the impacts of wintertime secondary ammonium nitrate and ammonium chloride aerosol

Receptor model source attributions for Utah's Salt Lake City airshed and the impacts of wintertime secondary ammonium nitrate and ammonium chloride aerosol

Evaluating the potential of dietary crude protein manipulation in reducing ammonia emissions from cattle and pig manure: A meta-analysis

The effect of the prevailing weather on the statistics of atmospheric temperature inversions

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