{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/129946"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/129946","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The impact of cold-air damming on precipitation during the South Carolina 2015 flood","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms","abstract_has_math":false,"creators":["Sepulveda, Jackie M."],"institution":"University of Illinois Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Atmospheric Sciences","degree_department":null,"school":null,"contributors":["Hence, Deanna","Nesbitt, Stephen W","Dominguez, Francina"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-07-18","date_published":"2025-07-18","updated_at":"2026-07-22T22:25:06Z","subjects":["Extreme Rainfall","Cold-air Damming","Meteorology","Infrastructure","Weather","Flood"],"languages":["en","eng"],"rights":["Copyright 2025 Jackie Sepulveda"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/129946","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hence, Deanna","Nesbitt, Stephen W","Dominguez, Francina"]},{"key":"dc:creator","label":"Author","values":["Sepulveda, Jackie M."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2025-07-18","2025-08"]},{"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 Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Extreme Rainfall","Cold-air Damming","Meteorology","Infrastructure","Weather","Flood"]}]},{"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 2025 Jackie Sepulveda"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/129946"]}]},{"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 2025-10-20 without embargo terms","The student, Jackie Sepulveda, accepted the attached license on 2025-07-15 at 22:16.","The student, Jackie Sepulveda, submitted this Thesis for approval on 2025-07-15 at 22:23.","This Thesis was approved for publication on 2025-07-18 at 14:51.","DSpace SAF Submission Ingestion Package generated from Vireo submission #22592 on 2025-10-20 at 20:15:18","Analyses of observed precipitation accumulations, reanalysis datasets, and high-resolution numerical simulations characterize the impact terrain, specifically through cold-air damming (CAD), has upon the intensity, placement, and evolution of rainfall during the 2015 October 1-5 South Carolina flood associated with non-landfalling Hurricane Joaquin. Improving understanding of the role of this indirect form of orographic precipitation enhancement in extreme precipitation events could aid in weather prediction and risk assessment of possible damage to aging water management infrastructure, such as the likely cascading dam failures that occurred during this event. Examination of ASOS data determined that the CAD event, identified by the strongest temperature gradient, peaked on 3 October 2015 where the temperature difference between the coast and eastern side of the mountains exceeded 15ºC. Differences between reanalysis and operational forecast solutions of the strength of temperature gradients and wind flow coincide with marked variations in the timing and intensity of the resulting precipitation. WRF-ARW is used to model the event with terrain modification experiments to quantify the impact that the Appalachian Mountains have on the CAD and atmospheric stability and the subsequent precipitation characteristics. These experiments indicate that modifying the terrain alters the CAD’s stability and maintenance spatially and temporally, which although caused alterations in the placement of localized maximums, but did not alter the event’s extremity. Precipitation formation within the main plume is most enhanced along the area of increased confluence along the leading edge of the CAD, which then falls over the state of South Carolina. This enhancement along the leading edge is most influenced by the CAD’s evolution."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["The impact of cold-air damming on precipitation during the South Carolina 2015 flood"]}]}],"canonical_facts":{"dc:contributor":["Hence, Deanna","Nesbitt, Stephen W","Dominguez, Francina"],"dc:creator":["Sepulveda, Jackie M."],"dc:date":["2025-07-18","2025-08"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms","The student, Jackie Sepulveda, accepted the attached license on 2025-07-15 at 22:16.","The student, Jackie Sepulveda, submitted this Thesis for approval on 2025-07-15 at 22:23.","This Thesis was approved for publication on 2025-07-18 at 14:51.","DSpace SAF Submission Ingestion Package generated from Vireo submission #22592 on 2025-10-20 at 20:15:18","Analyses of observed precipitation accumulations, reanalysis datasets, and high-resolution numerical simulations characterize the impact terrain, specifically through cold-air damming (CAD), has upon the intensity, placement, and evolution of rainfall during the 2015 October 1-5 South Carolina flood associated with non-landfalling Hurricane Joaquin. Improving understanding of the role of this indirect form of orographic precipitation enhancement in extreme precipitation events could aid in weather prediction and risk assessment of possible damage to aging water management infrastructure, such as the likely cascading dam failures that occurred during this event. Examination of ASOS data determined that the CAD event, identified by the strongest temperature gradient, peaked on 3 October 2015 where the temperature difference between the coast and eastern side of the mountains exceeded 15ºC. Differences between reanalysis and operational forecast solutions of the strength of temperature gradients and wind flow coincide with marked variations in the timing and intensity of the resulting precipitation. WRF-ARW is used to model the event with terrain modification experiments to quantify the impact that the Appalachian Mountains have on the CAD and atmospheric stability and the subsequent precipitation characteristics. These experiments indicate that modifying the terrain alters the CAD’s stability and maintenance spatially and temporally, which although caused alterations in the placement of localized maximums, but did not alter the event’s extremity. Precipitation formation within the main plume is most enhanced along the area of increased confluence along the leading edge of the CAD, which then falls over the state of South Carolina. This enhancement along the leading edge is most influenced by the CAD’s evolution."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/129946"],"dc:language":["en","eng"],"dc:rights":["Copyright 2025 Jackie Sepulveda"],"dc:subject":["Extreme Rainfall","Cold-air Damming","Meteorology","Infrastructure","Weather","Flood"],"dc:title":["The impact of cold-air damming on precipitation during the South Carolina 2015 flood"],"dc:type":["text"],"thesis:degree_discipline":["Atmospheric Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:06Z"}