Wind effects on dual probe heat pulse method measured soil thermal properties

dc.contributor.author Sang, Yujie
dc.contributor.author Liu, Gang
dc.contributor.author Horton, Robert
dc.contributor.author Horton, Robert
dc.contributor.department Agronomy
dc.date 2020-01-14T14:57:12.000
dc.date.accessioned 2020-06-29T23:06:38Z
dc.date.available 2020-06-29T23:06:38Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.embargo 2021-01-07
dc.date.issued 2020-01-07
dc.description.abstract <p>When a dual probe heat pulse (DPHP) sensor is installed in soil near the soil-atmosphere interface, the basic assumptions of the infinite line heat source (ILS) model and its improvement, the infinite line heat source model with an adiabatic boundary condition (ILS-ABC), might not be satisfied because of wind. This study aims at exploring the effects of wind on DPHP measurements and comparing the performance of the ILS and ILS-ABC models with different values of wind velocity (υ) and burial depth (d). Our study shows that the results of laboratory experiments, COMSOL simulations, and field experiments are consistent with each other. For dry sand with d ≤ 4 mm, the effects of wind is non-negligible when υ ≥ 3.5 m s-1, and the DPHP method does not provide accurate estimations whether the ILS model or the ILS-ABC model is used. Field experiments are prone to large background temperature fluctuations which can cause the linear de-trend method of Jury and Bellantuoni (1976) to perform poorly. In general, υ is less than 2.7 m s-1 in field and for d = 5 mm the ILS-ABC model provides more accurate estimations with relative error < 15% in thermal conductivity (λ) and relative error < 9% in heat capacity (c).</p>
dc.description.comments <p>This is a manuscript of an article published as Sang, Yujie, Gang Liu, and Robert Horton. "Wind effects on dual probe heat pulse method measured soil thermal properties." <em>Soil Science Society of America Journal </em>(2020). doi: <a href="https://doi.org/10.1002/saj2.20041">10.1002/saj2.20041</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/621/
dc.identifier.articleid 1670
dc.identifier.contextkey 16205204
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/621
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4993
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/621/0-Permissions___Digital_Library.pdf|||Sat Jan 15 01:18:39 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/621/2020_Horton_WindEffectsManuscript.pdf|||Sat Jan 15 01:18:41 UTC 2022
dc.source.uri 10.1002/saj2.20041
dc.subject.disciplines Climate
dc.subject.disciplines Hydrology
dc.subject.disciplines Soil Science
dc.title Wind effects on dual probe heat pulse method measured soil thermal properties
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication d3fb0917-6868-417e-9695-a010896cfafa
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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