Coriolis 2

[cod]

Thanks for all comments in previous thread.

What I am really trying to grasp is how Coriolis veers a sea breeze and backs the geostrophic wind at ground level. I know friction is part of the story but I need to see the whole picture. Logically I would think it should be the other way round. I wonder if there are some other forces at work? Centrifugal perhaps??

Looking forward to more comments.

MINESAPINT.

 

[snowleopard]

Confusing I'll agree, but yes, I would expect the wind to veer....

Take the South coast - a sea breeze is travelling north. Its Eastward momentum from the earth's spin mean it would be deflected eastward as it moved north or to put it in conventional terms, a Southerly wind is deflected to become SW which is clockwise (a veer).

 

[gandy]

Coriolis doesn't back the wind at ground level, exactly. At ground level the wind is less, moving slower, so subject to less Coriolis. If you think of it as veering the upper level wind it makes more sense.

Tony S

 

[Cornishman]

There is an explanation of your problem in Meteorology for Mariners (MET.O.895) pp27 and 28.

 

[mirabriani]

Go and visit a children's playground (preferably with a child)
Find the roundabout and give it a spin; that is the world. Then imagine a sunbam heating a spot near the edge. Now stand on that spot and try to jump, (warm air has a tendancy to rise) You should begin to imagine what happens to the warmed air, hopefully before the police arrive!

Hope this helps, Briani

 

[cod]

Back to the sea breeze veering.

I do expect the sea breeze to veer but I would think the stronger it gets the less Coriolis would be able to veer it. This as we all know is not the case. So does Coriolis increase in strength with the strength of the wind? This is the bit I need to understand.

Thanks again.

MINESAPINT.

 

[snowleopard]

[ QUOTE ]
So does Coriolis increase in strength with the strength of the wind? This is the bit I need to understand.

[/ QUOTE ]

Yes.

The faster it is moving the greater the coriolis effect.

 

[DeeGee]

[ QUOTE ]
Back to the sea breeze veering.

I do expect the sea breeze to veer but I would think the stronger it gets the less Coriolis would be able to veer it. This as we all know is not the case. So does Coriolis increase in strength with the strength of the wind? This is the bit I need to understand.

Thanks again.

MINESAPINT.

[/ QUOTE ]There is a nice little explanation here, re sea breeze and c-force. Of course, you need to de-think Australian... /forums/images/graemlins/cool.gif

 

[cod]

Thanks again.

Now I need to understand how Coriolis can increase its strength just because of an increase in the wind speed.

Re the Austrailian piece. Very interesting, thrown completely new light on the subject. I am not going to dismiss this theory out of hand but I fear it might be POPPYCOCK!

I am still working on it.

MINESAPINT.