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dc.contributor.authorAjaz, Ali
dc.contributor.authorTaghvaeian, Saleh
dc.contributor.authorKhand, Kul
dc.contributor.authorGowda, Prasanna H.
dc.contributor.authorMoorhead, Jerry E.
dc.date.accessioned2019-07-10T20:30:50Z
dc.date.available2019-07-10T20:30:50Z
dc.date.issued2019-07-04
dc.identifieroksd_ajaz_droughtindex_2019
dc.identifier.citationAjaz, A., Taghvaeian, S., Khand, K., Gowda, P. H., & Moorhead, J. E. (2019). Development and evaluation of an agricultural drought index by harnessing soil moisture and weather data. Water, 11(7). https://doi.org/10.3390/w11071375
dc.identifier.urihttps://hdl.handle.net/11244/320419
dc.description.abstractA new agricultural drought index was developed for monitoring drought impacts on agriculture in Oklahoma. This new index, called the Soil Moisture Evapotranspiration Index (SMEI), estimates the departure of aggregated root zone moisture from reference evapotranspiration. The SMEI was estimated at five locations across Oklahoma representing different climates. The results showed good agreement with existing soil moisture-based (SM) and meteorological drought indices. In addition, the SMEI had improved performance compared to other indices in capturing the effects of temporal and spatial variations in drought. The relationship with crop production is a key characteristic of any agricultural drought index. The correlations between winter wheat production and studied drought indices estimated during the growing period were investigated. The correlation coefficients were largest for SMEI (r > 0.9) during the critical crop growth stages when compared to other drought indices, and r decreased by moving from semi-arid to more humid regions across Oklahoma. Overall, the results suggest that the SMEI can be used effectively for monitoring the effects of drought on agriculture in Oklahoma.
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dc.languageen_US
dc.publisherMDPI
dc.rightsThe author(s) retain the copyright or have the right to deposit the item giving the Oklahoma State University Library a limited, non-exclusive right to share this material in its institutional repository. Contact Digital Resources and Discovery Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.
dc.titleDevelopment and evaluation of an agricultural drought index by harnessing soil moisture and weather data
osu.filenameoksd_ajaz_droughtindex_2019.pdf
dc.description.peerreviewPeer reviewed
dc.identifier.doi10.3390/w11071375
dc.description.departmentBiosystems and Agricultural Engineering
dc.type.genreArticle
dc.type.materialText
dc.subject.keywordscrop production
dc.subject.keywordsevapotranspiration
dc.subject.keywordswinter wheat
dc.subject.keywordsoklahoma
dc.subject.keywordsmesonet
dc.rights.licensehttps://creativecommons.org/licenses/by/4.0/


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