http:// www.ncas.ac.uk This is the footer odelling of deep convective clouds nd orographic triggering of convection uring the COPS experiment Ralph Burton, NCAS (Leeds) Alan Gadian, NCAS (Leeds) Victoria Smith, ICAS, (Leeds) Stephen Mobbs, NCAS (Leeds)
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http://www.ncas.ac.ukThis is the footer
Modelling of deep convective cloudsand orographic triggering of convectionduring the COPS experiment
Area of high(er) CAPE in the region of the “cloud” location.
Zone of convergence at the cloud location.
BUT
Sensitivity to model Cu and microphysics Other sensitivities… GFS analysis appears to be too dry. WRF does not seem to agree with obs. at higher elevations ( > ~ 850-900m) quite so well: under-predicts the 2m temp and over-predicts the RH: evaporative cooling?
• ECMWF T799 analysis – ready to try!• Objective analysis
Conclusions
15th July
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Outflow from clouds in model
Outflows appear to convergence, and cloud formed as a result
Good comparison with remote sensing data
Again, model agrees with obs. at lower elevations better than at higher elevations.
• Need higher temporal resolution runs (output every minute) to isolate the mechanisms of triggering.