{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/121529"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/121529","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Examining the role of deep convective updrafts in QLCS tornadogenesis using observations and real-world modeling","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms","abstract_has_math":false,"creators":["Wolff, Edward Clarence"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Atmospheric Sciences","degree_department":null,"school":null,"contributors":["Trapp, Robert J","Nesbitt, Stephen W","Kosiba, Karen"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-08","date_published":"2023-08","updated_at":"2026-07-22T22:25:00Z","subjects":["Tornado","Severe Weather","Updraft","Vortex","Mesovortex","Qlcs","Perils","Thunderstorm","Overshooting Top","Wrf","Weather Research And Forecasting Model","Mrms","Multi-radar Multi-sensor","Reflectivity","Radar","Goes","Satellite","Southeast"],"languages":["en","eng"],"rights":["Copyright 2023 Edward C. Wolff"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/121529","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Trapp, Robert J","Nesbitt, Stephen W","Kosiba, Karen"]},{"key":"dc:creator","label":"Author","values":["Wolff, Edward Clarence"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-08","2023-07-17"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"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":["Tornado","Severe Weather","Updraft","Vortex","Mesovortex","Qlcs","Perils","Thunderstorm","Overshooting Top","Wrf","Weather Research And Forecasting Model","Mrms","Multi-radar Multi-sensor","Reflectivity","Radar","Goes","Satellite","Southeast"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2023 Edward C. Wolff"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/121529"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms","The student, Edward Wolff, accepted the attached license on 2023-07-14 at 11:16.","The student, Edward Wolff, submitted this Thesis for approval on 2023-07-14 at 14:28.","This Thesis was approved for publication on 2023-07-17 at 15:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19693 on 2023-12-04 at 17:02:37","Tornadoes that form from quasi-linear convective systems (QLCSs) are especially difficult to predict and identify, leading to lower situational awareness and shorter warning lead times. QLCS tornadoes are especially prevalent in the Southeast United States and societal factors within this region make these tornadic QLCSs especially devastating to the communities they impact. It is hypothesized that stronger, severe circulations tend to be associated with deep updrafts and overshooting convection, whereas weaker, non-severe circulations are not. To address this hypothesis, local storm reports and storm surveys during the second Intensive Observing Period of the 2022 Propagation, Evolution, and Rotation in Linear Storms (PERiLS) field campaign are used to identify low-level tornadic circulations within the QLCS. These circulations are then compared to upper-tropospheric features, such as overshooting tops (OTs), which are calculated with an OT identification algorithm using 1-minute resolution mesoscale sector data from the GOES-16 satellite, as well as strong updrafts, identified with multi-radar multi-sensor (MRMS) 3D mosaic reflectivity products. Only a fraction of tornadoes within the QLCS exhibit overshooting convection, though all tornadoes are co-located with upper- tropospheric reflectivity cores. To augment the observational analysis, a numerical simulation of the event is also conducted using the Weather Research and Forecasting model (WRF). Feedbacks between updrafts and circulations in QLCSs are also explored. The identification of updraft and tornadogenesis signatures within high-resolution geostationary satellite and MRMS data may ultimately help improve the identification of regions within QLCSs most likely to result in damaging circulations."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Examining the role of deep convective updrafts in QLCS tornadogenesis using observations and real-world modeling"]}]}],"canonical_facts":{"dc:contributor":["Trapp, Robert J","Nesbitt, Stephen W","Kosiba, Karen"],"dc:creator":["Wolff, Edward Clarence"],"dc:date":["2023-08","2023-07-17"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms","The student, Edward Wolff, accepted the attached license on 2023-07-14 at 11:16.","The student, Edward Wolff, submitted this Thesis for approval on 2023-07-14 at 14:28.","This Thesis was approved for publication on 2023-07-17 at 15:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19693 on 2023-12-04 at 17:02:37","Tornadoes that form from quasi-linear convective systems (QLCSs) are especially difficult to predict and identify, leading to lower situational awareness and shorter warning lead times. QLCS tornadoes are especially prevalent in the Southeast United States and societal factors within this region make these tornadic QLCSs especially devastating to the communities they impact. It is hypothesized that stronger, severe circulations tend to be associated with deep updrafts and overshooting convection, whereas weaker, non-severe circulations are not. To address this hypothesis, local storm reports and storm surveys during the second Intensive Observing Period of the 2022 Propagation, Evolution, and Rotation in Linear Storms (PERiLS) field campaign are used to identify low-level tornadic circulations within the QLCS. These circulations are then compared to upper-tropospheric features, such as overshooting tops (OTs), which are calculated with an OT identification algorithm using 1-minute resolution mesoscale sector data from the GOES-16 satellite, as well as strong updrafts, identified with multi-radar multi-sensor (MRMS) 3D mosaic reflectivity products. Only a fraction of tornadoes within the QLCS exhibit overshooting convection, though all tornadoes are co-located with upper- tropospheric reflectivity cores. To augment the observational analysis, a numerical simulation of the event is also conducted using the Weather Research and Forecasting model (WRF). Feedbacks between updrafts and circulations in QLCSs are also explored. The identification of updraft and tornadogenesis signatures within high-resolution geostationary satellite and MRMS data may ultimately help improve the identification of regions within QLCSs most likely to result in damaging circulations."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/121529"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Edward C. Wolff"],"dc:subject":["Tornado","Severe Weather","Updraft","Vortex","Mesovortex","Qlcs","Perils","Thunderstorm","Overshooting Top","Wrf","Weather Research And Forecasting Model","Mrms","Multi-radar Multi-sensor","Reflectivity","Radar","Goes","Satellite","Southeast"],"dc:title":["Examining the role of deep convective updrafts in QLCS tornadogenesis using observations and real-world modeling"],"dc:type":["text"],"thesis:degree_discipline":["Atmospheric Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}