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dc.contributor.authorWang, Jingyu
dc.contributor.authorDong, Xiquan
dc.contributor.authorKennedy, Aaron
dc.contributor.authorHagenhoff, Brooke
dc.contributor.authorXi, Baike
dc.date.accessioned2019-08-01T19:15:14Z
dc.date.available2019-08-01T19:15:14Z
dc.date.issued2019-08
dc.identifier.citationWang, J., Dong, X., Kennedy, A., Hagenhoff, B., & Xi, B. (2019). A Regime Based Evaluation of Southern and Northern Great Plains Warm-Season Precipitation Events in WRF. Weather and Forecasting, (2019).en_US
dc.identifier.issn0882-8156
dc.identifier.doi10.1175/waf-d-19-0025.1
dc.identifier.urihttp://hdl.handle.net/10150/633612
dc.description.abstractA competitive neural network known as the self-organizing map (SOM) is used to objectively identify synoptic patterns in the North American Regional Reanalysis (NARR) for warm-season (April-September) precipitation events over the Southern and Northern Great Plains (SGP/NGP) from 2007 to 2014. Classifications for both regions demonstrate contrast in dominant synoptic patterns ranging from extratropical cyclones to subtropical ridges, all of which have preferred months of occurrence. Precipitation from deterministic Weather Research and Forecasting (WRF) Model simulations run by the National Severe Storms Laboratory (NSSL) are evaluated against National Centers for Environmental Prediction (NCEP) Stage IV observations. The SGP features larger observed precipitation amount, intensity, and coverage, as well as better model performance than the NGP. Both regions' simulated convective rain intensity and coverage have good agreement with observations, whereas the stratiform rain (SR) is more problematic with weaker intensity and larger coverage. Further evaluation based on SOM regimes shows that WRF bias varies with the type of meteorological forcing, which can be traced to differences in the diurnal cycle and properties of stratiform and convective rain. The higher performance scores are generally associated with the extratropical cyclone condition than the subtropical ridge. Of the six SOM classes over both regions, the largest precipitation oversimulation is found for SR dominated classes, whereas a nocturnal negative precipitation bias exists for classes featuring upscale growth of convection.en_US
dc.description.sponsorshipClimate Model Development and Validation (CMDV) program - Office of Biological and Environmental Research in the U.S. Department of Energy Office of Science under University of Arizona [DE-SC0017015]; NOAA R2O project at the University of North Dakota [NA15NWS468004]; Climate Model Development and Validation program; Water Cycle and Climate Extreme Modeling science focus area - Office of Biological and Environmental Research in the U.S. Department of Energy Office of Science; U.S. Department of Energy (DOE) [DE-AC05-76RL01830]en_US
dc.language.isoenen_US
dc.publisherAMER METEOROLOGICAL SOCen_US
dc.rights© 2019 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectConvectionen_US
dc.subjectSynoptic climatologyen_US
dc.subjectPrecipitationen_US
dc.subjectClimate classificationen_US
dc.subjectregimesen_US
dc.subjectModel evaluationen_US
dc.subjectperformanceen_US
dc.titleA Regime-Based Evaluation of Southern and Northern Great Plains Warm-Season Precipitation Events in WRFen_US
dc.typeArticleen_US
dc.identifier.eissn1520-0434
dc.contributor.departmentUniv Arizona, Dept Hydrol & Atmospher Scien_US
dc.identifier.journalWEATHER AND FORECASTINGen_US
dc.description.note6 month embargo; published online: 2 July 2019en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume34
dc.source.issue4
dc.source.beginpage805-831


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