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Model Upgrade - Upgrade of the National Water Model to Version 2.1
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NWM V2.1 represents a major upgrade over V2.0 implemented in 2019, and contains several significant enhancements furthering model performance and coverage. Highlights include: -First ever operational hydrologic model forecast coverage for Puerto Rico and the United States (US) Virgin Islands -Expansion of streamflow modeling coverage to the Great Lakes Basin, allowing for a full accounting of inflow into the Great Lakes -An enhanced treatment of reservoirs, with use of US Geological Survey (USGS) and US Army Corps of Engineers (USACE) data via a persistence methodology, and ingest of River Forecast Center (RFC)-supplied reservoir outflow forecast data. -New open-loop (non-data assimilation) model configurations to support interpretation and use of model forecasts -Forcing improvements including use of Multi-Radar Multi-Sensor version 12 (MRMS) Quantitative Precipitation Estimate (QPE) data over Hawaii, and improved bias correction and downscaling of meteorological forcing over the Continental United States. -Improvements to snow melt physics, model calibration, and code modularity.
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Comment Start Date:
2020-06-26 Comment End Date: 2020-08-05
Last edit date to this meta-data: 2020-08-07