NYC SEA BREEZE EVENT 2004.08.09 William T. Thompson, Teddy Holt, and Julie Pullen Naval Research...
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Transcript of NYC SEA BREEZE EVENT 2004.08.09 William T. Thompson, Teddy Holt, and Julie Pullen Naval Research...
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