Physically based maximization of precipitation over American river watershed in California

K. Ishida, S. Jang, N. Ohara, S. Kure, M. L. Kavvas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 72-hour precipitation in a storm event over the American River Watershed (ARW) in California is maximized using a physically-based numerical model for a regional atmosphere. A storm event over ARW is caused by a high-moisture atmosphere coming from the Pacific Ocean, called «atmospheric river.» Moreover, the path of an atmospheric river affects the amount of precipitation over the ARW. Therefore, the contribution of an atmospheric river to 72-hour precipitation over ARW is maximized by spatially shifting the atmospheric conditions for the numerical atmospheric model. In this study, this methodology is applied to the 1997 January storm event, one of the severest storm events over the ARW. Consequently, the 72-hour precipitation is maximized by shifting the atmospheric conditions southward by 6.0 degrees and westward by 1.0 degree, and the maximized value results in 568 mm. The results show that a historical storm event had the capability to cause higher precipitation, and the presented methodology is effective for the estimation of maximum precipitation over the ARW.

Original languageEnglish
Title of host publicationWorld Environmental and Water Resources Congress 2013
Subtitle of host publicationShowcasing the Future - Proceedings of the 2013 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1198-1201
Number of pages4
ISBN (Print)9780784412947
DOIs
Publication statusPublished - 2013
EventWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Cincinnati, OH, United States
Duration: 2013 May 192013 May 23

Publication series

NameWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress

Other

OtherWorld Environmental and Water Resources Congress 2013: Showcasing the Future
CountryUnited States
CityCincinnati, OH
Period13/5/1913/5/23

ASJC Scopus subject areas

  • Water Science and Technology

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