{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/107932"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/107932","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"High resolution numerical simulation of a nocturnal mesoscale convective system: Comparison with pecan observations","abstract":"Nighttime convective storms produce a significant portion of warm season precipitation across the Great Plains region of the United States. The PECAN (Plains Elevated Convection at Night) project was designed to improve our understanding of how these storms can develop and maintain themselves in the absence of traditional sources of CAPE (Convective Available Potential Energy). This thesis focuses on the 20 June 2015 MCS (Mesoscale Convective System) event, in which airborne in-situ microphysical and radar data were collected using the NOAA P3 research aircraft. In terms of elevated MCS structure, this was the most ideal case observed during the campaign and produced numerous severe wind and hail reports, as well as at least one tornadic supercell. In order to expand upon the impact of microphysical processes on the kinematic evolution of the storm sampled by the P3, the WRF-ARW model was used to run high-resolution numerical simulations which would help highlight in detail the mechanisms that allowed this storm to maintain itself through the night and into the next morning. This thesis will address the benefits and limitations of data collection in field projects such as PECAN by directly comparing the data collected by the P-3 with analogous datasets extracted from the numerical simulation, and show that the simulation is sufficiently robust to carry out a detailed dynamical analysis of nocturnal MCSs’ mechanisms for propagation and maintenance.","abstract_html":"Nighttime convective storms produce a significant portion of warm season precipitation across the Great Plains region of the United States. The PECAN (Plains Elevated Convection at Night) project was designed to improve our understanding of how these storms can develop and maintain themselves in the absence of traditional sources of CAPE (Convective Available Potential Energy). This thesis focuses on the 20 June 2015 MCS (Mesoscale Convective System) event, in which airborne in-situ microphysical and radar data were collected using the NOAA P3 research aircraft. In terms of elevated MCS structure, this was the most ideal case observed during the campaign and produced numerous severe wind and hail reports, as well as at least one tornadic supercell. In order to expand upon the impact of microphysical processes on the kinematic evolution of the storm sampled by the P3, the WRF-ARW model was used to run high-resolution numerical simulations which would help highlight in detail the mechanisms that allowed this storm to maintain itself through the night and into the next morning. This thesis will address the benefits and limitations of data collection in field projects such as PECAN by directly comparing the data collected by the P-3 with analogous datasets extracted from the numerical simulation, and show that the simulation is sufficiently robust to carry out a detailed dynamical analysis of nocturnal MCSs’ mechanisms for propagation and maintenance.","abstract_has_math":false,"creators":["Adams, Alexander John"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Atmospheric Sciences","degree_department":null,"school":null,"contributors":["Rauber, Robert M"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-08-26T21:54:32Z","date_published":"2020-08-26T21:54:32Z","updated_at":"2026-07-22T22:24:47Z","subjects":["Mesoscale Convective Systems","Nocturnal Convection","Elevated Convection","MCS Structure","PECAN","Numerical Modeling","High Resolution","WRF","Radar","Aircraft Observations","Comparisons"],"languages":["en"],"rights":["Copyright 2020 Alexander Adams"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/107932","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rauber, Robert M"]},{"key":"dc:creator","label":"Author","values":["Adams, Alexander John"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020-08-26T21:54:32Z","2020-04-30","2020-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Atmospheric Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Mesoscale Convective Systems","Nocturnal Convection","Elevated Convection","MCS Structure","PECAN","Numerical Modeling","High Resolution","WRF","Radar","Aircraft Observations","Comparisons"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2020 Alexander Adams"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/107932"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Nighttime convective storms produce a significant portion of warm season precipitation across the Great Plains region of the United States. The PECAN (Plains Elevated Convection at Night) project was designed to improve our understanding of how these storms can develop and maintain themselves in the absence of traditional sources of CAPE (Convective Available Potential Energy). This thesis focuses on the 20 June 2015 MCS (Mesoscale Convective System) event, in which airborne in-situ microphysical and radar data were collected using the NOAA P3 research aircraft. In terms of elevated MCS structure, this was the most ideal case observed during the campaign and produced numerous severe wind and hail reports, as well as at least one tornadic supercell. In order to expand upon the impact of microphysical processes on the kinematic evolution of the storm sampled by the P3, the WRF-ARW model was used to run high-resolution numerical simulations which would help highlight in detail the mechanisms that allowed this storm to maintain itself through the night and into the next morning. This thesis will address the benefits and limitations of data collection in field projects such as PECAN by directly comparing the data collected by the P-3 with analogous datasets extracted from the numerical simulation, and show that the simulation is sufficiently robust to carry out a detailed dynamical analysis of nocturnal MCSs’ mechanisms for propagation and maintenance.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-08-25 without embargo terms","The student, Alexander Adams, accepted the attached license on 2020-04-27 at 18:12.","The student, Alexander Adams, submitted this Thesis for approval on 2020-04-27 at 18:25.","This Thesis was approved for publication on 2020-04-30 at 16:27.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15094 on 2020-08-25 at 17:09:06","Made available in DSpace on 2020-08-26T21:54:32Z (GMT). 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The PECAN (Plains Elevated Convection at Night) project was designed to improve our understanding of how these storms can develop and maintain themselves in the absence of traditional sources of CAPE (Convective Available Potential Energy). This thesis focuses on the 20 June 2015 MCS (Mesoscale Convective System) event, in which airborne in-situ microphysical and radar data were collected using the NOAA P3 research aircraft. In terms of elevated MCS structure, this was the most ideal case observed during the campaign and produced numerous severe wind and hail reports, as well as at least one tornadic supercell. In order to expand upon the impact of microphysical processes on the kinematic evolution of the storm sampled by the P3, the WRF-ARW model was used to run high-resolution numerical simulations which would help highlight in detail the mechanisms that allowed this storm to maintain itself through the night and into the next morning. This thesis will address the benefits and limitations of data collection in field projects such as PECAN by directly comparing the data collected by the P-3 with analogous datasets extracted from the numerical simulation, and show that the simulation is sufficiently robust to carry out a detailed dynamical analysis of nocturnal MCSs’ mechanisms for propagation and maintenance.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-08-25 without embargo terms","The student, Alexander Adams, accepted the attached license on 2020-04-27 at 18:12.","The student, Alexander Adams, submitted this Thesis for approval on 2020-04-27 at 18:25.","This Thesis was approved for publication on 2020-04-30 at 16:27.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15094 on 2020-08-25 at 17:09:06","Made available in DSpace on 2020-08-26T21:54:32Z (GMT). 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