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Model simulation of dye dispersion. Bob Houghton, LDEO Changsheng Chen & Qichun Xu, Umass D. Field Experiment GLOBEC III May 1999. Pre-injection Cross tidal front Hydrographic sections. Observations. Temperature variation of dye patch (seasonal heating ~0.034 o C/day).
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Model simulation of dye dispersion Bob Houghton, LDEO Changsheng Chen & Qichun Xu, Umass D
Field Experiment GLOBEC III May 1999
Pre-injection Cross tidal front Hydrographic sections
Temperature variation of dye patch (seasonal heating ~0.034 oC/day)
` 4km grid 2km grid
0.5 km grid 0.25 km grid
Data assimilation from Scanfish surveys of dye patch
Simulated 0.5 km Assimilation 0.5 km Trajectory of a near-surface particle Trajectory of a near-bottom particle Trajectory of the center of the vertically averaged model dye concentration.
Assimilation Simulated
Observed Simulated Assimilation with T and S 1: 3:59 GMT, 23 May 2: 11: 43 GMT, 23 May 3: 15:22 GMT, 23 May 4: 19:24 GMT, 23 May 5: 21:34 GMT, 23 May 6: 00:53 GMT, 25 May 6 5 2 1 3 4
Observed dye patch temperature Patch temperature from assimilation model
Integrated dye on 30 m Temperature 5-23 6000 5-23 18000 B A 5-24 18000 5-26 18000 D C
Integrated dye on 30 m density 5-23 18000 5-23 6000 B A 5-26 18000 5-24 18000 C D
Diabatic event 600 hr 800 hr o o B A 1200 hr 1000 hr o o C D