{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/108524"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/108524","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"RELAMPAGO-CACTI drop size distribution observations and the implications for cloud and hydrologic studies","abstract":"Comparisons of drop size distributions (DSD) properties and rainfall modes among three deep convective regions (the U.S. Southern Great Plains, in Córdoba Province in subtropical South America, and Manacapuru in central Amazonia) where heavy rain-producing systems contribute the majority of rainfall in the largest river basins of the Americas, are conducted. Measurements from two types of disdrometers sampled at two of the three sites were considered, and subsequently separated into a light precipitation mode and a precipitation mode using a cutoff at 0.5 mm hr-1. The distributions of physical parameters (such as rain rate R, mass-weighted mean diameter Dm, and normalized droplet concentration Nw) for the raindrop spectra without classification appear to be similar amongst the sites, except for much broader distributions of Nw at the Córdoba site. In the light precipitation and precipitation modes, the dominant higher observed frequency of Nw in both types of disdrometers, as well as the identification of shallow, light precipitation in vertically-pointing cloud radar data represent a unique characteristic of the Córdoba site relative to the other sites. As a result, the co-variability between DSD physical parameters indicates that the precipitation observed at Córdoba may confound existing drop size distribution methods of determining rain type.","abstract_html":"Comparisons of drop size distributions (DSD) properties and rainfall modes among three deep convective regions (the U.S. Southern Great Plains, in Córdoba Province in subtropical South America, and Manacapuru in central Amazonia) where heavy rain-producing systems contribute the majority of rainfall in the largest river basins of the Americas, are conducted. Measurements from two types of disdrometers sampled at two of the three sites were considered, and subsequently separated into a light precipitation mode and a precipitation mode using a cutoff at 0.5 mm hr-1. The distributions of physical parameters (such as rain rate R, mass-weighted mean diameter Dm, and normalized droplet concentration Nw) for the raindrop spectra without classification appear to be similar amongst the sites, except for much broader distributions of Nw at the Córdoba site. In the light precipitation and precipitation modes, the dominant higher observed frequency of Nw in both types of disdrometers, as well as the identification of shallow, light precipitation in vertically-pointing cloud radar data represent a unique characteristic of the Córdoba site relative to the other sites. As a result, the co-variability between DSD physical parameters indicates that the precipitation observed at Córdoba may confound existing drop size distribution methods of determining rain type.","abstract_has_math":false,"creators":["Rivelli Zea, Lina Esther"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Atmospheric Sciences","degree_department":null,"school":null,"contributors":["Nesbitt, Stephen W"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-07-21","date_published":"2020-07-21","updated_at":"2026-07-22T22:24:48Z","subjects":["Clouds","Precipitation","Drop size distributions","Cloud microphysics"],"languages":["en"],"rights":["Copyright 2020 Lina Esther Rivelli Zea."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/108524","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Nesbitt, Stephen W"]},{"key":"dc:creator","label":"Author","values":["Rivelli Zea, Lina Esther"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020-07-21","2020-10-07T21:00:06Z","2020-08"]},{"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":["Clouds","Precipitation","Drop size distributions","Cloud microphysics"]}]},{"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 Lina Esther Rivelli Zea."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/108524"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Comparisons of drop size distributions (DSD) properties and rainfall modes among three deep convective regions (the U.S. Southern Great Plains, in Córdoba Province in subtropical South America, and Manacapuru in central Amazonia) where heavy rain-producing systems contribute the majority of rainfall in the largest river basins of the Americas, are conducted. Measurements from two types of disdrometers sampled at two of the three sites were considered, and subsequently separated into a light precipitation mode and a precipitation mode using a cutoff at 0.5 mm hr-1. The distributions of physical parameters (such as rain rate R, mass-weighted mean diameter Dm, and normalized droplet concentration Nw) for the raindrop spectra without classification appear to be similar amongst the sites, except for much broader distributions of Nw at the Córdoba site. In the light precipitation and precipitation modes, the dominant higher observed frequency of Nw in both types of disdrometers, as well as the identification of shallow, light precipitation in vertically-pointing cloud radar data represent a unique characteristic of the Córdoba site relative to the other sites. As a result, the co-variability between DSD physical parameters indicates that the precipitation observed at Córdoba may confound existing drop size distribution methods of determining rain type.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-10-02 without embargo terms","The student, Lina Rivelli Zea, accepted the attached license on 2020-07-20 at 22:12.","The student, Lina Rivelli Zea, submitted this Thesis for approval on 2020-07-20 at 22:27.","This Thesis was approved for publication on 2020-07-21 at 17:11.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15704 on 2020-10-02 at 15:14:59","Made available in DSpace on 2020-10-07T21:00:06Z (GMT). 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Measurements from two types of disdrometers sampled at two of the three sites were considered, and subsequently separated into a light precipitation mode and a precipitation mode using a cutoff at 0.5 mm hr-1. The distributions of physical parameters (such as rain rate R, mass-weighted mean diameter Dm, and normalized droplet concentration Nw) for the raindrop spectra without classification appear to be similar amongst the sites, except for much broader distributions of Nw at the Córdoba site. In the light precipitation and precipitation modes, the dominant higher observed frequency of Nw in both types of disdrometers, as well as the identification of shallow, light precipitation in vertically-pointing cloud radar data represent a unique characteristic of the Córdoba site relative to the other sites. As a result, the co-variability between DSD physical parameters indicates that the precipitation observed at Córdoba may confound existing drop size distribution methods of determining rain type.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-10-02 without embargo terms","The student, Lina Rivelli Zea, accepted the attached license on 2020-07-20 at 22:12.","The student, Lina Rivelli Zea, submitted this Thesis for approval on 2020-07-20 at 22:27.","This Thesis was approved for publication on 2020-07-21 at 17:11.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15704 on 2020-10-02 at 15:14:59","Made available in DSpace on 2020-10-07T21:00:06Z (GMT). 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