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\begin{document}

\title{The US COASTAL Act, the end-to-end workflow}



\author[1]{Ali Abdolali}%
\author[2]{Anil Kumar}%
\author[3]{Zaizhong Ma}%
\author[4]{Roshan Shrestha}%
\author[1]{Andre Van der Westhuysen}%
\author[2]{Saeed Moghimi}%
\author[5]{Ryan Grout}%
\author[5]{Julio Zyserman}%
\author[3]{Avichal Mehra}%
\author[6]{Maoyi Huang}%
\author[7]{Athena Clark}%
\affil[1]{NOAA Environmental Modeling Center}%
\affil[2]{NOAA}%
\affil[3]{National Centers For Environmental Prediction-Environmental Modeling Center}%
\affil[4]{Environmental Modeling Center, NCEP, NOAA}%
\affil[5]{NOAA Office of Water Prediction, National Water Center}%
\affil[6]{National Oceanic and Atmospheric Administration}%
\affil[7]{US Geological Survey}%


\vspace{-1em}



  
  \date{May 24, 2024}


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\begin{abstract}
The Named Storm Event Model (NSEM) which includes the atmospheric suite
(HWRF 1, HRRR 2, RTMA-URMA 3 and WRF-LES 4) {[}1{]}, the coupled
wave-surge-riverine modeling system (WW3 5-ADCIRC 6-NWM 7) {[}2,3{]} and
a validation suite has been developed to provide definitive estimates of
wind and water variables of major landfalling hurricanes, in compliance
with the United States COASTAL Act of 2012. Within this framework, the
performance of atmospheric products is evaluated and blended fields are
generated on a high-resolution grid, using a master blend recipe. The
atmospheric data forces the downstream hydro-coupled component which
includes the wave (WAVEWATCH III {[}4,5{]}), ocean circulation (ADCIRC)
and hydrological models (NWM). These have been coupled using the
community-based National Unified Operational Prediction Capability
(NUOPC) layer based on the Earth Systems Modeling Framework (ESMF). The
wind and hydro products are evaluated against offshore and coastal wave
buoys, nearshore water level stations, radars and satellite altimeters,
as well as USGS rapid-deployment water level and wave gauges placed in
the nearshore regions and overland. The NSEM workflow will be presented
at the conference, highlighting the advantages of ESMF in model
performance improvement and challenges for upstream atmospheric model
blending, model coupling, and validation against observations. 1- HWRF
(Hurricane Weather Research and Forecasting) 2- HRRR (High-Resolution
Rapid Refresh) 3- RTMA-URMA (Real Time Mesoscale Analysis-UnRestricted
Mesoscale Analysis) 4- WRF-LES (Weather Research and Forecasting-Large
Eddy Simulation) 5- WAVEWATCH III (WAVE-height, WATer depth and Current
Hindcasting) 6- ADCIRC (The ADvanced CIRCulation model) 7- NWM (National
Water Model)%
\end{abstract}%



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