Journal article
On the role of atmospheric simulations horizontal grid spacing for flood modeling
Climate dynamics, Vol.59(11-12), pp.3167-3174
05/22/2022
DOI: 10.1007/s00382-022-06233-0
Abstract
Our study focuses on the hydrologic implications of resolving and modeling atmospheric processes at different spatial scales. Here we use heavy precipitation events from an atmospheric model that was run at different horizontal grid spacings (i.e., 250 m, 500 m, 1 km, 2 km 4 km, and 12 km) and able to resolve different processes. Within an idealized simulation framework, these rainfall events are used as input to an operational distributed hydrologic model to evaluate the sensitivity of the hydrologic response to different forcing grid spacings. We consider the finest scale (i.e., 250 m) as reference, and compute event peak flows and volumes across a wide range of basin sizes. We find that the use of increasingly-coarser inputs leads to changes in the distribution of event peak flows and volumes, with the strongest sensitivity at the smallest catchment sizes. Our results show the compromise between computational cost and hydrologic performance, providing basic information for future endeavors geared towards regional downscaling.
Details
- Title: Subtitle
- On the role of atmospheric simulations horizontal grid spacing for flood modeling
- Creators
- Felipe Quintero - University of IowaGabriele Villarini - University of IowaAndreas F. Prein - National Center for Atmospheric ResearchWitold F. Krajewski - University of IowaWei Zhang - Utah State University
- Resource Type
- Journal article
- Publication Details
- Climate dynamics, Vol.59(11-12), pp.3167-3174
- DOI
- 10.1007/s00382-022-06233-0
- ISSN
- 0930-7575
- eISSN
- 1432-0894
- Grant note
- DOI: 10.13039/100014791, name: Iowa Department of Transportation, award: 20-SPR2-002
- Language
- English
- Date published
- 05/22/2022
- Academic Unit
- IIHR--Hydroscience and Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984274649902771
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