Details:

Journal Title:
JAWRA Journal of the American Water Resources Association
Personal Author:
Meselhe, Ehab ; Lamjiri, Maryam A. ; Flint, Kelly ; Matus, Sean ; White, Eric D. ; ... More +
Meselhe, Ehab ; Lamjiri, Maryam A. ; Flint, Kelly ; Matus, Sean ; White, Eric D. ; Mandli, Kyle Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research)
Description:
The benefits of operational forecasting models to the general public are numerous. They support water management decisions, provide the opportunity to mitigate the impacts of weather‐ and flood‐related disasters and potentially save lives and properties. Channel flow routing is a key component of these models and affects their ability to forecast flood depth, duration, and extent. Continental scale channel flow routing within the operational forecasting environments encounters a broad spectrum of hydraulic characteristics. Deploying computationally demanding approaches, such as the dynamic wave, should be limited in time and space to conditions where the inertia terms are significant (typically in low‐gradient environments and whenever backwater effects are prominent); otherwise, efficient and robust methods, e.g., Kinematic, Muskingum‐Cunge or diffusive waves should be the default. The heterogeneous routing approach presented here provides a framework to evaluate the balance between friction, inertia, and pressure and strategically triggers the appropriate wave approximation. The strategy recommended here is to activate the appropriate wave approximation based on the ambient hydraulic conditions, and smoothly transitions among these approximations. This strategy, if successfully implemented, would strike a balance among the performance metrics of operational forecasting models, namely, computational efficiency, accuracy, and minimization of computational instabilities.
Keywords:
[+]
Earth-Surface Processes Ecology Water Science And Technology
Source:
JAWRA Journal of the American Water Resources Association, 57(2), 209-221
DOI:
https://doi.org/10.1111/1752-1688.12847
ISSN:
1093-474X;1752-1688;
Format:
PDF
Publisher:
Wiley
Document Type:
Journal Article
Funding:
Grant no. NA18OAR4590394
License:
https://creativecommons.org/licenses/by/4.0/
Rights Information:
CC BY
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:7b4c570f58db2b8e2cc259ada7ab9c7c75b329ba5afa049400ed1c5024131a40
Download URL:
https://repository.library.noaa.gov/view/noaa/58261/noaa_58261_DS1.pdf
File Type:

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