7 votes
Accepted

Why are frontal zones connected to low-pressure systems but not to high-pressure systems?

Not only are fronts associated with (extratropical) lows, but by in large, fronts are extensions of those lows, as shown by the following hand analysis (from the US Storm Prediction Center): There's ...
JeopardyTempest's user avatar
2 votes
Accepted

Cloudless sky in synop message?

Yes, in your example, the group should have been omitted. From the WMO Publication No. 306 - Manual On Codes - Volume I.1 - Part A, Section A, FM 12 SYNOP: 12.2.7 Group 8NhCLCMCH 12.2.7.1 This ...
Thomas's user avatar
  • 36
2 votes

Why are frontal zones connected to low-pressure systems but not to high-pressure systems?

The (relatively) easy answer is that the mechanism that low pressure systems generally form are different than the mechanism that high pressure areas form. This begs the question "How do low pressure ...
BarocliniCplusplus's user avatar
1 vote

In quasi-geostrophic frontogenesis, what happens if the potential vorticity is negative?

Mathmatically, the Sawyer–Eliassen equation is an second-order partical differential equation of the form: $$\frac{\partial}{\partial y}\left(A\frac{\partial \psi}{\partial y}+B\frac{\partial\psi}{\...
MiniUFO's user avatar
  • 91

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