NYC SEA BREEZE EVENT 2004.08.09
William T. Thompson, Teddy Holt, and Julie PullenNaval Research Laboratory
Monterey, CA
NYC SEA BREEZE EVENT 2004080912
• Results are shown for nest 5• Δx = 444 m
• Period is preceded by 5 days of data assimilation
• Urban canopy parameterization is used on nests 4 and 5 (more later)
• High resolution, time dependent SST from NYHOPS data on nests 4 and 5
NYC SEA BREEZE EVENT 2004080912
• Animation* from 1200 UTC 9 August to 0000 UTC 10 August 2004, showing 2 m wind (m/s) and potential temperature (K)*hourly from 12-18; 15 min thereafter
• Wind turns onshore at ~1600 UTC or 1400 LT and slowly advances over Brooklyn and Queens
• Sea breeze front reaches Manhattan at ~1700 LT• Front continues into New Jersey• Wind over Manhattan Island remains light throughout
the period
NYC SEA BREEZE EVENT 2004080912
• Animated cross sections in the plane A-B from 1800 UTC to 0000 UTC 22 August 2004
• Frames every 15 min• A-B is 37.5 km from near the shore in Brooklyn,
across lower Manhattan, and into New Jersey• Potential temperature (K) is shown• Note the cool, shallow layer propagating along the
surface from B towards A (SE to NW)• Note also the density current head-like structure at
the leading edge at later hours
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