Projects

MSU Award Number

363548-191001-021000

Current NGI File Number

NA19OAR4590411

Associated MSU Award or NGI File Numbers

N/A

Start Date

9/1/2019

End Date

2021-8-31 0:0:0

Project Status

Completed

Award Amount

$1,477,676.00

Project Title

Developing New Capabilities and Research Applications for the National Water Model Over the Southeastern US

PI Last Name

Dyer

PI First Name

Jamie

PI Affiliation

MSU

Co-PI Last Name

Mercer

Co-PI First Name

Andrew

Co-PI Affiliation

MSU

Research Theme

CH-CE

Funding Source

OAR

Project Description

New capabilities for the National Water Model (NWM) were made possible by the implementation of the model within the Unified Forecast System (UFS) and development of applications to water-related issues across the Southeast US. Researchers implemented and tested the NWM over sub-domains within this region focusing on data flow and coupling methods, calibration of model parameters, and assessment of output accuracy and precision in short-range (hours to days) and medium-range (days to two weeks) simulations. This effort included hydrologic simulations at these time scales to provide water-related quality and quantity information. Evaluations were conducted on the NWM’s ability to address extreme conditions such as flood and drought and to address data needs for simulating a variety of hydrologic conditions, including groundwater withdrawals for municipal and agricultural uses, land use, leaf area index, and soil moisture values and their influence on the precision and accuracy of NWM output. A parallel version of the WRF-Hydro model with the same configuration and parameterization as the medium-range NWM operational framework was compiled and tested; the sensitivity of near-surface temperature and moisture patterns over the Southeast US was quantified within the WRF-Hydro model framework; and historical NWM output was compared against observed recorded data during low flow events.