Short-distance pressure gradient
 

On Thursday, 18 June 2020 21:15:34 UTC+1, Weatherlawyer wrote:
On Wednesday, 17 June 2020 14:01:18 UTC+1, JGD wrote:
A question that someone here might be able to help with please:

Is it possible to get any idea of the likely pressure gradient
associated with wind over relatively short distances, eg 500-1000m - say
one end of a level field to the other?

Presumably there has to be some difference in pressure for the wind to
blow at all, but I'm guessing that even for a significant say 20kt wind
blowing directly along the length of the field then the difference over
1km might be relatively tiny, say 0.1mb?

https://groups.google.com/forum/?hl=en-GB#!searchin/uk.sci.weather/JGD$20%7Csort:date

Why have all your posts been deleted?

One has to assume you dawlish troll is aimed at understanding smoothness without doing any thinking of your own. This is the problem not withstanding the disappearances:
Your continuity equation describes the transport of nebulous quanta, a conserved quantity, generalized to apply to any extensive quantities.

....in which mass, energy, momentum, and other natural quantities are conserved in a variety of physical phenomena describe continuity equations.

Something that a childishly empty mind alone can contain. Hence the suspicion of your dawlishness. Does you brain not instruct you that when you open any of your cranial orifices, the tenor about you hear changes?

Whistle for it, bub.
The unknowns are the velocity (v,x)t) and the pressure (p,x)t) reduced to zero in containment -which voids all experiment since in three dimensions there are three equations and four unknowns and the pressure at infinity -of the container- that describes the conservation of mass of the fluid.

Short-distance pressure gradient
 

On Friday, 19 June 2020 05:06:17 UTC+1, Weatherlawyer wrote:
On Thursday, 18 June 2020 21:15:34 UTC+1, Weatherlawyer wrote:
On Wednesday, 17 June 2020 14:01:18 UTC+1, JGD wrote:
A question that someone here might be able to help with please:

Is it possible to get any idea of the likely pressure gradient
associated with wind over relatively short distances, eg 500-1000m - say
one end of a level field to the other?

Presumably there has to be some difference in pressure for the wind to
blow at all, but I'm guessing that even for a significant say 20kt wind
blowing directly along the length of the field then the difference over
1km might be relatively tiny, say 0.1mb?

https://groups.google.com/forum/?hl=en-GB#!searchin/uk.sci.weather/JGD$20%7Csort:date

Why have all your posts been deleted?

One has to assume you dawlish troll is aimed at understanding smoothness without doing any thinking of your own. This is the problem not withstanding the disappearances:
Your continuity equation describes the transport of nebulous quanta, a conserved quantity, generalized to apply to any extensive quantities.

...in which mass, energy, momentum, and other natural quantities are conserved in a variety of physical phenomena describe continuity equations.

Something that a childishly empty mind alone can contain. Hence the suspicion of your dawlishness. Does your brain not instruct you that when you open any of your cranial orifices, the tenor about you head changes?

Yours especially, in the ratio of volume to cranial capacity.
The unknowns are the velocity (v,x)t and the pressure (p,x)t reduced to zero in containment -which voids the data since in three dimensions there are three equations and four unknowns and the pressure contained.