ECMWF overview, Nils Wedi - C-SRNWP Project
ECMWF overview, Nils Wedi - C-SRNWP Project
ECMWF overview, Nils Wedi - C-SRNWP Project
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New prognostic microphysics scheme<br />
Scheme description<br />
Richard Forbes<br />
Current Cloud Scheme<br />
New Cloud Scheme<br />
WATER<br />
VAPOUR<br />
CLOUD<br />
FRACTION<br />
CLOUD<br />
Liquid/Ice<br />
Evaporation<br />
CLOUD<br />
FRACTION<br />
PRECIP<br />
Rain/Snow<br />
• 2 prognostic cloud variables + w.v.<br />
• Ice/water is a diagnostic function of<br />
temperature (0°C to -23°C)<br />
• Diagnostic precipitation (rain/snow)<br />
EWGLAM/<strong>SRNWP</strong> 2010 Slide 24<br />
• 5 prognostic cloud variables + water vapour<br />
• Ice and water now independent in mixed<br />
phase temperature regime<br />
• Prognostic (advected) precipitation<br />
<strong>ECMWF</strong>
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