Effects of Measurement Intervals on Estimation of Ammonia Emissions from Layer Houses

dc.contributor.author Gates, Richard
dc.contributor.author Xin, Hongwei
dc.contributor.author Xin, Hongwei
dc.contributor.author Gates, Richard
dc.contributor.author Wheeler, Eileen
dc.contributor.author Casey, Kenneth
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T04:16:29.000
dc.date.accessioned 2020-06-29T22:37:35Z
dc.date.available 2020-06-29T22:37:35Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2006
dc.date.embargo 2012-12-13
dc.date.issued 2006-01-01
dc.description.abstract <p>Continuous quantification of aerial emissions from animal feeding operations over an extended time period is labor and resource intensive. Strategically reducing measurement time to achieve comparable emission results is thus highly desirable. This article delineates the effects of measurement intervals on estimation of annual mean and maximum daily ammonia emission rate (ER) of high-rise (HR) and manure-belt (MB) layer houses. The full dataset consisted of 318 daily ER values of four HR houses from weekly 48 h continuous measurement and 112 daily ER values of two MB houses from bi-weekly 48 h continuous measurements over one-year period. Each full dataset was sampled to yield subsets of daily ER at different intervals, i.e., one week (HR houses only), two weeks, one month, two months, or three months. The corresponding estimates of annual ammonia ER from the subsets were computed and compared with that of the full dataset. The results indicate that the annual mean daily ER values derived from the subsets progressively deviated from that of the full dataset by 3% to 37% for the HR houses and by 6% to 41% for the MB houses. The augmented measurement intervals (i.e., greater than bi-weekly for the HR houses and greater than monthly for the MB houses) led to considerable underestimation of the daily maximum ER values, and thus are not recommended when daily maximum emission values are to be assessed.</p>
dc.description.comments <p>This article is from <a href="http://elibrary.asabe.org/abstract.asp?aid=20236&t=3&dabs=Y&redir=&redirType=" target="_blank"><em>Transactions of the ASAE</em></a> 49, no. 1 (2006): 183–186.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/161/
dc.identifier.articleid 1166
dc.identifier.contextkey 3536095
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/161
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/898
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/161/Xin_2006_EffectsMeasurementIntervals.pdf|||Fri Jan 14 20:54:56 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Air quality
dc.subject.keywords Animal feeding operation
dc.subject.keywords Measurement uncertainty
dc.subject.keywords Sampling frequency
dc.title Effects of Measurement Intervals on Estimation of Ammonia Emissions from Layer Houses
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isAuthorOfPublication 36e0a8ce-fa2e-4df4-9f67-8d1717122650
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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