Model 9: Water vapour in GCMs
Model 9: Water vapour in GCMs
Model 9: Water vapour in GCMs
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<strong>Water</strong> <strong>vapour</strong> <strong>in</strong> <strong>GCMs</strong>Introduction<strong>Water</strong> <strong>vapour</strong>: budget equation●●models conta<strong>in</strong> a budget equation for water<strong>vapour</strong> (and for other forms of water)looks like cont<strong>in</strong>uity equation, but with thespecific humidity q <strong>in</strong>stead of the air density∂∂tddt q=P−Lqv⋅∇ q=P−L∂∂tq=−v⋅∇ qP−Llocal change of q transport of q Production Loss
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