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Projected changes in annual maximum discharge for Iowa communities

A newer version of this resource http://www.hydroshare.org/resource/44cb63d8a7b14fe98bdd15a4fd05e9c7 is available that replaces this version.

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Type:	Resource
Storage:	The size of this resource is 37.7 MB
Created:	Aug 08, 2022 at 7:53 p.m.
Last updated:	Aug 08, 2022 at 8:56 p.m.
DOI:	10.4211/hs.df4ca2bc4d84410a86f863c306c04cf8
Citation:	See how to cite this resource

Sharing Status:	Published
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Abstract

Understanding the projected changes in annual maximum peak discharge is important to improve resiliency in water resource planning and design at the community level. Currently, much of the literature on climate change impacts focuses on analyses at the regional scale. In this study we use a hydrologic model to evaluate the projected changes in annual maximum peak discharge at the community-level across Iowa under two emission scenarios, Representative Concentration Pathway 4.5 and 8.5 (RCP4.5 and RCP8.5). We utilize climate forcings from global climate models part of the Coupled Model Intercomparison Projected Phase 5 (CMIP5) from 1950 to 2100. Our simulations show a detectable increase in annual maximum discharge for 70% of the Iowa communities under RCP8.5. However, under RCP4.5 only 2% of the communities are projected to face an increase in annual maximum discharge by the end of the 21st century; furthermore, precipitation intensity under this scenario is not projected to increase in the latter half of the 21st century. Our results point to a larger increase in precipitation intensity and annual maximum discharge under RCP8.5 compared to RCP4.5, especially in the second half of this century. This pattern is present in the changes in flood peak distributions, with changes detected earlier in the current century under RCP4.5. This study provides a basis for analyzing climate change impacts at a local decision-making scale.

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Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

North Latitude

44.1338°

East Longitude

-89.6715°

South Latitude

39.9591°

West Longitude

-96.8786°

Temporal

Start Date:
End Date:

Content

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Related Resources

This resource has been replaced by a newer version

Michalek, A. (2023). Projected changes in annual maximum discharge for Iowa communities, HydroShare, http://www.hydroshare.org/resource/44cb63d8a7b14fe98bdd15a4fd05e9c7

How to Cite

Michalek, A. (2022). Projected changes in annual maximum discharge for Iowa communities, HydroShare, https://doi.org/10.4211/hs.df4ca2bc4d84410a86f863c306c04cf8

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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