A comparison between computer modeled bioaerosol dispersion and a bioaerosol field spray event

Ganio, Lisa M.; Mohr, Alan Jeff; Lighthart, Bruce

doi:10.1007/bf02450037

Cited by 6 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the model was compared with a release of Pseudomonas syringae, deposition rates were found to be similar within 30 m of the source. The simulation model was later used by Ganio et al (1995) to model a field spray event of Bacillus subtilis var. niger spores.…”

Section: Dispersion Modelingmentioning

confidence: 99%

BOARD-INVITED REVIEW: Fate and transport of bioaerosols associated with livestock operations and manures

Dungan

2010

Journal of Animal Science

104

View full text Add to dashboard Cite

Airborne microorganisms and microbial by-products from intensive livestock and manure management systems are a potential health risk to workers and individuals in nearby communities. This report presents information on zoonotic pathogens in animal wastes and the generation, fate, and transport of bioaerosols associated with animal feeding operations and land applied manures. Though many bioaerosol studies have been conducted at animal production facilities, few have investigated the transport of bioaerosols during the land application of animal manures. As communities in rural areas converge with land application sites, concerns over bioaerosol exposure will certainly increase. Although most studies at animal operations and wastewater spray irrigation sites suggest a decreased risk of bioaerosol exposure with increasing distance from the source, many challenges remain in evaluating the health effects of aerosolized pathogens and allergens in outdoor environments. To improve our ability to understand the off-site transport and diffusion of human and livestock diseases, various dispersion models have been utilized. Most studies investigating the transport of bioaerosols during land application events have used a modified Gaussian plume model. Because of the disparity among collection and analytical techniques utilized in outdoor studies, it is often difficult to evaluate health effects associated with aerosolized pathogens and allergens. Invaluable improvements in assessing the health effects from intensive livestock practices could be made if standardized bioaerosol collection and analytical techniques, as well as the use of specific target microorganisms, were adopted.

show abstract

Section: Dispersion Modelingmentioning

confidence: 99%

BOARD-INVITED REVIEW: Fate and transport of bioaerosols associated with livestock operations and manures

Dungan

2010

Journal of Animal Science

104

View full text Add to dashboard Cite

show abstract

“…A random walk model incorporating droplet evaporation characteristics was validated [63] and used to estimate the dispersion of genetically engineered airborne bacteria [64] in relatively complicated meteorological conditions.…”

Section: Airborne Bacterial Survival and Dispersion Modelsmentioning

confidence: 99%

The ecology of bacteria in the alfresco atmosphere

Lighthart

2006

FEMS Microbiology Ecology

Self Cite

102

View full text Add to dashboard Cite

This MiniReview is concerned with the sources, flux and the spacial and temporal distributions of culturable airborne bacteria; how meteorological conditions modulate these distributions; and how death, culture media, and experimental devices relate to measuring airborne bacteria. Solar radiation is thought to be the planetary driver of the annual (seasonal, where it occurs) and diurnal natural alfresco atmospheric bacterial population cycles. Long‐term climatological and short‐term meteorological events such as storms also ‘randomly’ modulate the populations. The annual cycle may be due largely to the seasonal events of vegetation growth, drying conditions, rainy season, and freezing winter temperatures. The diurnal cycle may also be influenced largely by solar radiation in that the sunrise peak that has been frequently observed may be due to convective updrafts entraining epiphytic and soil bacteria into the atmosphere. At this time they are initially concentrated in a slowly deepening mixed layer but then, as the layer deepens more rapidly in mid‐morning, they become increasingly dilute. When the layer formation slows in the early afternoon, and forms an inversion cap, the bacteria slowly accumulate in the deeper mixed layer until sundown. At sundown atmospheric cleansing processes rid the atmosphere of the larger bacteria associated particles. These processes may include gravitational settling, death due to desiccation, and upward displacement of the warm, light air by clean, cold, heavier air.

show abstract

“…A wide variety of approaches have been used for modelling the transport of biological particles on different spatial scales: Gaussian plume models (distances up to Â100 m; Ganio et al, 1995;Skelsey et al, 2008), Lagrangian stochastic models (Jarosz et al, 2004), regional-scale models (Helbig et al, 2004;Sofiev et al, 2006) and global climate and transport models (Burrows et al, 2009b;Wilkinson et al, 2012). Most studies of the airborne dispersal of biological particles have focused on the spread of specific human, animal and plant diseases on the local or regional scale Gloster et al, 1982;Aylor et al, 2003;Isard et al, 2005).…”

Section: Atmospheric Transport Of Biological Particlesmentioning

confidence: 99%

Primary biological aerosol particles in the atmosphere: a review

Després¹,

Huffman

Burrows³

et al. 2012

Tellus B: Chemical and Physical Meteorology

1,168

1,114

View full text Add to dashboard Cite

A B S T R A C T Atmospheric aerosol particles of biological origin are a very diverse group of biological materials and structures, including microorganisms, dispersal units, fragments and excretions of biological organisms. In recent years, the impact of biological aerosol particles on atmospheric processes has been studied with increasing intensity, and a wealth of new information and insights has been gained. This review outlines the current knowledge on major categories of primary biological aerosol particles (PBAP): bacteria and archaea, fungal spores and fragments, pollen, viruses, algae and cyanobacteria, biological crusts and lichens and others like plant or animal fragments and detritus. We give an overview of sampling methods and physical, chemical and biological techniques for PBAP analysis (cultivation, microscopy, DNA/RNA analysis, chemical tracers, optical and mass spectrometry, etc.). Moreover, we address and summarise the current understanding and open questions concerning the influence of PBAP on the atmosphere and climate, i.e. their optical properties and their ability to act as ice nuclei (IN) or cloud condensation nuclei (CCN). We suggest that the following research activities should be pursued in future studies of atmospheric biological aerosol particles: (1) develop efficient and reliable analytical techniques for the identification and quantification of PBAP; (2) apply advanced and standardised techniques to determine the abundance and diversity of PBAP and their seasonal variation at regional and global scales (atmospheric biogeography); (3) determine the emission rates, optical properties, IN and CCN activity of PBAP in field measurements and laboratory experiments; (4) use field and laboratory data to constrain numerical models of atmospheric transport, transformation and climate effects of PBAP.

show abstract

A comparison between computer modeled bioaerosol dispersion and a bioaerosol field spray event

Cited by 6 publications

References 10 publications

BOARD-INVITED REVIEW: Fate and transport of bioaerosols associated with livestock operations and manures

BOARD-INVITED REVIEW: Fate and transport of bioaerosols associated with livestock operations and manures

The ecology of bacteria in the alfresco atmosphere

Primary biological aerosol particles in the atmosphere: a review

Contact Info

Product

Resources

About