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Part III. Appendix 4: User Outreach- Solar Radiation- Precipitation Amount- River Discharge- Bathymetry- Sea Level/Ocean-Sea Surface Height- Bottom Characteristics (type, vegetation, sediment composition and thickness, acoustic stratigraphy)- Ambient Noise- Nutrients- Bioluminescence- Optical Properties- Ocean Color- Surface RoughnessNational Security Issue 2Improve safety and efficiency of operations at sea.• Product NS-2.1: Improved wave forecasts at the 3–7 day range, especially for storms and tropicalcyclones.• Product NS-2.2: High-resolution (to include variability at scales of meters) shallow-water waveand surf forecasts, especially in denied areas.• Product NS-2.3: Real-time near-surface velocity estimates and forecasts for search and rescue.• Product NS-2.4: Improved navigational products.• Variables required for National Security Issue 2 include:- Directional Wave Spectra- Bathymetry- Wind Vectors- 3-D Vector Currents- Ice Concentration- Ice Thickness- Atmospheric VisibilityNational Security Issue 3Establish the capability to detect airborne and waterborne contaminants in ports, harbors, and littoralregions at home and abroad, and to predict the dispersion of those contaminants for planning,mitigation, and remediation.239