Table 2
Summary of convective processes at play in various situations with ∇μ> 0.
| qv = qs |
|
Moist | Dry | |
| conv. | conv. | |||
|
|
||||
|
✗ | ✗ | ||
|
|
||||
|
✗ | ✗ | ✗ | |
| <∇T< | ✓ | ✗ | ✓ | ✗ |
| ∇ad + ∇μ | ✓ | ✓ | ✗ | ✗ |
|
|
||||
| 0 < ∇θv | ✗ | ✗ | ✓ | |
| ⇔ | ✓ | ✗ | ✓ | ✓ |
| ∇ad + ∇μ< ∇T | ✓ | ✓ | ✗ | ✓a |
Notes. First, choose the temperature gradient regime on the left and whether the medium is saturated (qv = qs) and/or water rich (in the sense
). Then, the two right columns indicate which type of convection will develop. The absence of any symbol in a given box means that this specific criterion has no influence under the given conditions.
Although it would seem from applying the various criteria that dry convection should be allowed in this case, we put a red mark to remind the reader that this situation almost never occurs in practice, as discussed in Sect. 3.4.
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