Pressure

[Cornish JackParticipant @cornishjack]

Last night's Beeb Wx forecast had a remark that we had just experienced the highest barometric pressure recorded for a hundred years , although the figure wasn't mentioned. We seem to be in a cycle of record meteorological 'events'. The barometric 'swing' has been exceptional with extreme LOW pressure in Norway recently threatening to ground some aircraft types – the altimeter sub-scales were not able to set to such values!!

The 'baro' graph from the Davis weather station shows a large transient 'spike' a couple of days ago – looks as though it might have been up around the 1050 mark!

Strange times, indeed

rgds

Bill

 

Edited By Cornish Jack on 30/03/2020 11:30:14

[Cornish JackParticipant @cornishjack]

[Anonymous]

Posted by Cornish Jack on 30/03/2020 11:29:32:

Last night's Beeb Wx forecast had a remark that we had just experienced the highest barometric pressure recorded for a hundred years , although the figure wasn't mentioned.

That was really annoying; the BBC probably though the peasants would be too thick to understand it. A value of 1050 would indeed be high. Around 1030 to 1040 is a pretty good peak in the UK.

Andrew

[not done it yetParticipant @notdoneityet]

All that hot air usually exhausted by aerobuzzers being replaced by colder, more dense gases?🙂

The occasional high pressures are likely keeping the wind speeds high – along with the wind-generated leccy?

[J HancockParticipant @jhancock95746]

Reading here 1048mb 1230hrs, Grimsby, nearly hard against the stop !

[Michael GilliganParticipant @michaelgilligan61133]

BuxtonWeather recorded 1043.76 … ish

**LINK**

https://www.buxtonweather.co.uk

MichaelG.

[old martParticipant @oldmart]

I noticed 1040 yesterday but can't remember just when in the day.

I checked the record online and the winner was in Agata Russia in 1968: 1083.3mb.

Its 1032 in Weston Super Mare now.

Edited By old mart on 30/03/2020 21:53:25

Edited By old mart on 30/03/2020 21:55:22

[DMBParticipant @dmb]

Only a few weeks ago here in Brighton, my small cheapo barometer showing very low readings every few days and rising a bit in between. One occasion, it went to 945 lowest I've ever seen but dont know how accurate my baro is, at least it gives a sort of ball park idea of what's going on.

[John Paton 1Participant @johnpaton1]

Posted by not done it yet on 30/03/2020 12:19:27:

All that hot air usually exhausted by aerobuzzers being replaced by colder, more dense gases?🙂

The occasional high pressures are likely keeping the wind speeds high – along with the wind-generated leccy?

Yes we have delighted in seeing deep blue skies without the continuous haze of contrails we have all become accustomed to.

It is heartening to see how quickly pollution haze has disappeared from the skies (and we live in Dorset with predominantly Atlantic sea breezes so the improvement must be more marked further inland)

John

[HopperParticipant @hopper]

So if all this lockdown goes on for say six months as some gurus are predicting, and consequently most emissions are drastically reduced, I wonder if there will be a measurable slowdown in global warming, or even a reversal, as shown in recorded temps worldwide?

Baro pressure here in Sticksville, Australia, is the usual 1010 BTW. Still waiting for blue skies.

[SillyOldDufferModerator @sillyoldduffer]

Posted by not done it yet on 30/03/2020 12:19:27:

All that hot air usually exhausted by aerobuzzers being replaced by colder, more dense gases?🙂

…

Probably not as this barometric chart of the North Atlantic from magicseaweed shows:

The chart is today, and although the pressure has dropped over the last few days the high centre West of Ireland hasn't moved much.

Although high pressure in the UK, there are Lows just south of Portugal, and another near Nova Scotia.

This is local North Atlantic weather, rather than fewer aircraft, but I suppose the extreme could be indirectly caused by global warming. The energy that drives weather mostly comes from heat stored in the sea, and this is higher than in the past – expect more turbulence.

I've wondered if aircraft releasing Carbon Dioxide and other muck high in the atmosphere cause more trouble than other man-made sources. But I've not found anybody reputable supporting the idea! It may be aircraft are small polluters compared with coal/gas electricity, steel making, and ground-level transport. Dunno!

Dave

Edited By SillyOldDuffer on 31/03/2020 10:51:34

[duncan webster 1Participant @duncanwebster1]

surely this is good news, higher pressure means higher density, so more oxygen per lungfull, must be good for Covid sufferers

[SteviegtrParticipant @steviegtr]

Is that why my ears kept popping this morning. I thought I was coming down with something, gone now.

Steve.

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