NOAA's National Water Model: Advancing operational hydrology through continental‐scale modeling
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Published:2024-01-12
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ISSN:1093-474X
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Container-title:JAWRA Journal of the American Water Resources Association
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language:en
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Short-container-title:J American Water Resour Assoc
Author:
Cosgrove Brian1ORCID, Gochis David2, Flowers Trey3, Dugger Aubrey4, Ogden Fred3, Graziano Tom1, Clark Ed3, Cabell Ryan4, Casiday Nick3, Cui Zhengtao5, Eicher Kelley6, Fall Greg7ORCID, Feng Xia8, Fitzgerald Katelyn4, Frazier Nels9, George Camaron8, Gibbs Rich8, Hernandez Liliana9ORCID, Johnson Donald3, Jones Ryan3, Karsten Logan2, Kefelegn Henok9, Kitzmiller David1, Lee Haksu5, Liu Yuqiong5, Mashriqui Hassan1, Mattern David9, McCluskey Alyssa4, McCreight James L.10, McDaniel Rachel3, Midekisa Alemayehu8, Newman Andy4, Pan Linlin4, Pham Cham1, RafieeiNasab Arezoo4, Rasmussen Roy4, Read Laura4, Rezaeianzadeh Mehdi9, Salas Fernando3, Sang Dina8, Sampson Kevin4ORCID, Schneider Tim4, Shi Qi9ORCID, Sood Gautam1, Wood Andy4, Wu Wanru1, Yates David4, Yu Wei4, Zhang Yongxin4
Affiliation:
1. Office of Water Prediction NOAA National Weather Service Silver Spring Maryland USA 2. Airborne Snow Observatories, Inc. Mammoth Lakes California USA 3. National Water Center NOAA National Weather Service, Office of Water Prediction Tuscaloosa Alabama USA 4. Research Applications Lab NSF National Center for Atmospheric Research Boulder Colorado USA 5. Lynker Silver Spring Maryland USA 6. University of Minnesota Minneapolis Minnesota USA 7. Office of Water Prediction NOAA National Weather Service Chanhassen Minnesota USA 8. Cooperative Institute for Research to Operations in Hydrology Tuscaloosa Alabama USA 9. Lynker Tuscaloosa Alabama USA 10. Cooperative Programs for the Advancement of Earth System Science (CPAESS), University Corporation for Atmospheric Research Boulder Colorado USA
Abstract
AbstractThe National Weather Service (NWS) Office of Water Prediction (OWP), in conjunction with the National Center for Atmospheric Research and the NWS National Centers for Environmental Prediction (NCEP) implemented version 2.1 of the National Water Model (NWM) into operations in April of 2021. As with the initial version implemented in 2016, NWM v2.1 is an hourly cycling analysis and forecast system that provides streamflow guidance for millions of river reaches and other hydrologic information on high‐resolution grids. The NWM provides complementary hydrologic guidance at current NWS river forecast locations and significantly expands guidance coverage and water budget information in underserved locations. It produces a full range of hydrologic fields, which can be leveraged by a broad cross section of stakeholders ranging from the emergency responder and water resource communities, to transportation, energy, recreation and agriculture interests, to other water‐oriented applications in the government, academic and private sectors. Version 2.1 of the NWM represents the fifth major version upgrade and more than doubles simulation skill with respect to hourly streamflow correlation, Nash Sutcliffe Efficiency, and bias reduction, over its original inception in 2016. This paper will discuss the driving factors underpinning the creation of the NWM, provide a brief overview of the model configuration and performance, and discuss future efforts to improve NWM components and services.
Subject
Earth-Surface Processes,Water Science and Technology,Ecology
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