Impacts of Hydrometeor Drift on Orographic Precipitation: Two Case Studies of Landfalling Atmospheric Rivers in British Columbia, Canada

Mo, Ruping; Brugman, Melinda M.; Milbrandt, Jason; Goosen, James; Geng, Quanzhen; Emond, Christopher; Bau, Jonathan; Erfani, Amin

doi:https://open-science.canada.ca/handle/123456789/1300

Impacts of Hydrometeor Drift on Orographic Precipitation: Two Case Studies of Landfalling Atmospheric Rivers in British Columbia, Canada

Simple item page

Full item details

dc.contributor.author: Mo, Ruping; Brugman, Melinda M.; Milbrandt, Jason; Goosen, James; Geng, Quanzhen; Emond, Christopher; Bau, Jonathan; Erfani, Amin
dc.date.accepted: 2019-06-06
dc.date.accessioned: 2023-11-17T16:38:16Z
dc.date.available: 2023-11-17T16:38:16Z
dc.date.issued: 2019-10-01
dc.date.submitted: 2018-10-18
dc.description.abstract - en: Two severe winter storms in 2016 and 2017 caused by landfalling atmospheric rivers over British Columbia (BC) are investigated in this study. Our main concern is the impact of hydrometeor drift on the orographic precipitation. It is shown that the dominant contribution to the windward orographic precipitation was from the horizontal moisture convergence. The precipitation distributions across southern BC were also influenced by the convergence/divergence of condensed water due to the wind-driven effect on hydrometeors. Observed hourly and daily precipitation amounts are used to verify the performances of three Canadian numerical weather prediction systems. Our results indicate that these operational systems were capable of predicting the general features of orographic precipitation in BC. However, the two coarse-resolution systems used a diagnostic precipitation scheme that does not fully simulate the hydrometeor drift process. The High-Resolution Deterministic Prediction System (HRDPS) with a prognostic precipitation scheme was substantially more accurate and skillful in predicting the upwind precipitation as well as the spillover of precipitation on the leeward slopes for these two storms. There was evidence suggesting that the spillover effect was overpredicted by the HRDPS due to a systematic bias originating in the model microphysics. This problem has been improved in the current HRDPS with a new microphysics scheme. Based on our atmospheric water balance analysis, we also proposed two postprocessing schemes that could be applied to improve the quantitative precipitation forecasts of the diagnostic precipitation schemes.
dc.description.fosrcfull - en: Copyright [2019] American Meteorological Society (AMS). For permission to reuse any portion of this Work, please contact <a href = "mailto: permissions@ametsoc.org">permissions@ametsoc.org</a>. Any use of material in this Work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC § 108) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. All AMS journals and monograph publications are registered with the Copyright Clearance Center (<a href="https://www.copyright.com">https://www.copyright.com</a>). Additional details are provided in the AMS Copyright Policy statement, available on the AMS website (<a href="https://www.ametsoc.org/PUBSCopyrightPolicy">https://www.ametsoc.org/PUBSCopyrightPolicy</a>)
dc.description.fosrcfull-fosrctranslation - fr: Droit d'auteur [2019] American Meteorological Society (AMS). Pour obtenir l'autorisation de réutiliser toute partie de cette œuvre, veuillez contacter <a href = "mailto: permissions@ametsoc.org">permissions@ametsoc.org</a>. Toute utilisation d'un élément de cette œuvre considérée comme une "utilisation équitable" par l'article 107 de la loi américaine sur le droit d'auteur (U.S. Copyright Act, 17 U.S. Code § 107) ou satisfaisant aux conditions énoncées à l'article 108 de la loi américaine sur le droit d'auteur (U.S. Copyright Act, 17 U.S. Code § 108) ne requiert pas l'autorisation de l'AMS. La republication, la reproduction systématique, l'affichage sous forme électronique, par exemple sur un site web ou dans une base de données interrogeable, ou toute autre utilisation de ce matériel, à l'exception de ce qui est exempté par la déclaration ci-dessus, nécessite une autorisation écrite ou une licence de la part de l'AMS. Toutes les revues et monographies de l'AMS sont enregistrées auprès du Copyright Clearance Center (<a href="https://www.copyright.com">https://www.copyright.com</a>). Des détails supplémentaires sont prévu dans la déclaration de politique de droit d'auteur de l'AMS, disponible sur le site web de l'AMS (<a href="https://www.ametsoc.org/PUBSCopyrightPolicy">https://www.ametsoc.org/PUBSCopyrightPolicy</a>)
dc.identifier.doi: https://doi.org/10.1175/WAF-D-18-0176.1
dc.identifier.issn: 0882-8156; 1520-0434
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/1300
dc.language.iso: en
dc.publisher: American Meteorological Society
dc.rights - en: Creative Commons Public Domain Dedication (CC0 1.0 Universal)
dc.rights - fr: Creative Commons Transfert dans le Domaine Public (CC0 1.0 universel)
dc.rights.openaccesslevel - en: Gold
dc.rights.openaccesslevel - fr: Or
dc.rights.uri - en: https://creativecommons.org/publicdomain/zero/1.0/
dc.rights.uri - fr: https://creativecommons.org/publicdomain/zero/1.0/deed.fr
dc.subject - en: Nature and environment; Science and technology; Climate
dc.subject - fr: Nature et environnement; Sciences et technologie; Climat
dc.subject.en - en: Nature and environment; Science and technology; Climate
dc.subject.fr - fr: Nature et environnement; Sciences et technologie; Climat
dc.title - en: Impacts of Hydrometeor Drift on Orographic Precipitation: Two Case Studies of Landfalling Atmospheric Rivers in British Columbia, Canada
dc.type - en: Article
dc.type - fr: Article
local.article.journalissue: 5
local.article.journaltitle: Weather and Forecasting
local.article.journalvolume: 34
local.pagination: 1211-1237
local.peerreview - en: Yes
local.peerreview - fr: Oui
local.requestdoi: No

Download(s)

Original bundle

Now showing 1 - 1 of 1

Name: HydrometeorDriftOrographicPrecipitation.pdf

Size: 18.36 MB

Format: PDF

Download file

Collection(s)

Climate and weather