Evaluating the U.S. National Water Model Retrospective Evapotranspiration Simulation using Eddy-Covariance Flux Tower Measurements

Chapagain, Abin Raj; Maghami, Iman; Ames, Daniel P.

doi:10.1016/j.ejrh.2025.102826

i

Evaluating the U.S. National Water Model Retrospective Evapotranspiration Simulation using Eddy-Covariance Flux Tower Measurements

2025
By Chapagain, Abin Raj ; Maghami, Iman ; Ames, Daniel P.

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Journal Title:

Journal of Hydrology: Regional Studies
Personal Author:

Chapagain, Abin Raj ; Maghami, Iman ; Ames, Daniel P.
NOAA Program & Office:

NWS (National Weather Service) ; CIROH (Cooperative Institute for Research to Operations in Hydrology)
Description:

The U.S. National Water Model (NWM) provides a multi-decade hindcast of evapotranspiration (ET) across CONUS on a 1 km grid. We conducted the first national-scale performance assessment of NWM ET using monthly comparisons with eddy-covariance flux tower measurements at 72 sites with diverse hydroclimatic conditions. We assessed performance at each site individually, and, to reveal broader spatial and environmental patterns, we grouped site-level results by National Weather Service River Forecast Centers (RFCs), Köppen-Geiger Climate Zones, and land cover classifications. We also evaluated NWM temperature forcings and assessed ET performance under water- and energy-limited conditions
Source:

Journal of Hydrology: Regional Studies, 62, 102826
DOI:

https://doi.org/10.1016/j.ejrh.2025.102826
ISSN:

2214-5818
Format:

PDF
Publisher:

Elsevier BV
Document Type:

Journal Article
Funding:

Grant no. NA22NWS4320003
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:867dba4421aa015c2bb591a2bcbcc958bfa88706f40554e01b2847c3859b758420a62c3c68841981daeab4eec6b888be0f9ef0be5f0f4ae4dfa2010f6af55ca7
Download URL:

https://repository.library.noaa.gov/view/noaa/72742/noaa_72742_DS1.pdf
File Type:

[PDF - 25.37 MB ]

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