uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #12   Report Post  
Old September 23rd 03, 09:31 PM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Jul 2003
Posts: 23
Default If the sun went out?


"Col" wrote in message
...

"AliCat" wrote in

message

...

Surface temperature would be below zero across

the
whole surface of the earth within a few days.

The
oceans hold an enormous amount of heat and

what we
would probably recognise as weather systems

would
continue until they froze to a great enough

depth
to insulate what heat remains trapped below to
such an extent that there was little to
differentiate between frozen water and land

(in
the order of 10's of metres, which would take
several months). Thereafter there would be

little
meridonal flow (N-S/S-N). After a year or two

or
three surface temperature would be 100K, or

less
with little or no wind at the surface. Life as

we
know it would have ceased, but some deep ocean
beasties may survive. I doubt access to
nuclear/fossil fuels would help us much. Some
bacteria may survive in deep freeze for

millennia,
most gasses would have liquefied/solidified at
this kind of timescale, with temperature not

far
off cosmic microwave background radiation

values.


I would imagine vast anticyclones of

unimaginable intensity would quickly
form over all land masses, even the tropical

ones. The Sahara can
become quite cold at night even now.
The temperature contrast from the still warm

oceans to that over the land
would be enormous. I think that the weather in

continental fringes such
as the UK would be 'interesting' to say the

least!
Ferocious blizzards would result, the snow

probably piling up many metres
high. But of course unlike now when the mild air

often wins the cold air will
push relentlessly on into the Atlantic.......

I'm not sure about this. The Earth would still be
spinning, so depressions would still form and move
across the continents, transferring energy from
the oceans and mitigating the radiative cooling.
Once the oceans froze, things would begin to
settle down.

Whatever, it would really bugger up the global
warming advocacy group's "hockey stick" forecast!


  #13   Report Post  
Old September 23rd 03, 09:39 PM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Sep 2003
Posts: 50
Default If the sun went out?

In article ,
Dave Ludlow writes:
Well Carbon Dioxide snow would be first, at a bit below -78.5 deg C.


Has that ever been seen in Antarctica? I believe the lowest temperatures
recorded there aren't too far away from that value.
--
John Hall

"I am not young enough to know everything."
Oscar Wilde (1854-1900)
  #14   Report Post  
Old September 23rd 03, 09:55 PM posted to uk.sci.weather
Col Col is offline
external usenet poster
 
First recorded activity by Weather-Banter: Jul 2003
Posts: 4,367
Default If the sun went out?


"John Hall" wrote in message
...
In article ,
Dave Ludlow writes:
Well Carbon Dioxide snow would be first, at a bit below -78.5 deg C.


Has that ever been seen in Antarctica? I believe the lowest temperatures
recorded there aren't too far away from that value.


I was just thinking that. I think the lowest is about -90C.
So at least in theory there should be a tiny layer of 'snowed out' CO2
on the surface of the normal snow.

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk







  #15   Report Post  
Old September 23rd 03, 10:15 PM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Jul 2003
Posts: 1,978
Default If the sun went out?


"Paul C" wrote in message
...
On Tue, 23 Sep 2003 20:39:52 +0100, "Col"
wrote:

.. Oh my God! Does that mean endless snow reports from Nguk


No but it will mean that TWO will predict record high summer temperatures
based on no-sun pattern matching.








--
Paul





  #16   Report Post  
Old September 23rd 03, 11:16 PM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Sep 2003
Posts: 2
Default If the sun went out?

In message , John Hall
writes
In article ,
Dave Ludlow writes:
Well Carbon Dioxide snow would be first, at a bit below -78.5 deg C.


Has that ever been seen in Antarctica? I believe the lowest temperatures
recorded there aren't too far away from that value.

From a quick search, the lowest ever recorded temperature was
-129°F/-89.4°C at Vostok, Antarctica, on July 21, 1983. Cold enough for
CO2 snow!

Will
--
lancre.net - The personal domain of Will and Cath Wilkinson.
Remove REMOVETOMAIL. to send e-mail

PGP Fingerprint E089 1736 A023 9E5C AFA3 0B40 E5DC D80A 9E1F D521
Public key can be obtained from ldap://certserver.pgp.com
  #17   Report Post  
Old September 24th 03, 01:25 AM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Jul 2003
Posts: 584
Default If the sun went out?

Well Carbon Dioxide snow would be first, at a bit below -78.5 deg C.

Not so. CO2 would condense out of the atmosphere if the temperature fell
to a level at which the vapour pressure of CO2 equalled its partial pressure in
the atmosphere. At sea level this is 0.37 mb, and the temperature required is
-143°C. At, say 30,000 ft the partial pressure of CO2 would only be 0.12 mb
and the temperature required would be even lower, about -148°C. So no CO2
snow. To say that CO2 should condense out below -78.5°C is like saying that
water should condense out at all temperatures below 100°C, which of course it
doesn't, because its partial pressure is much less than one atmosphere, even in
the Persian Gulf.

Fortunately(?) for
the unfortunate few left on earth, Oxygen and Nitrogen would remain as
gases way down to the minus 200s.


At MSL pressure the boiling point of oxygen is -183°C and nitrogen -196°C
so the "minus 200s" is a bit optimistic. Hydrogen goes a lot lower, of course.
(Put that fag out). But we'd all be stiffs by then anyway.

Tudor Hughes, Warlingham, Surrey.
  #19   Report Post  
Old September 24th 03, 07:32 AM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Sep 2003
Posts: 108
Default If the sun went out?

In uk.sci.weather on Tue, 23 Sep 2003 at 19:20:19, Alex Stephens Jnr
wrote :
The effects on the planet beneath the surface would be equally dramatic no
doubt.
Forget about electricity or weather, they would disappear.
Gradually the earth would cool down to the temperature of empty space (3°K?
/ -270°C).


It would take a long time - the earth's core is pretty hot.
--
Paul Hyett, Cheltenham, England
  #20   Report Post  
Old September 24th 03, 09:39 AM posted to uk.sci.weather
external usenet poster
 
First recorded activity by Weather-Banter: Sep 2003
Posts: 97
Default If the sun went out?

Chris Handscomb wrote:
From a scientific viewpoint, what would happen if the sun just stopped
producing light and heat in an instant? What would happen on the day and
night sides of the Earth respectively? How long would it take for the Earth
to freeze - what would the lowest temperature be? What would happen to the
weather systems in the atmosphere, how long would it take for life to become
extinct? Would there still be electricity? For how long? Forgetting about
the social and political aspects of it?

Anyone want to be curious about this and give some answers?

Jeremy (not Chris)



George W Bush wouldn't worry, just as long as he's secured another ten
years of oil supply for the USA.

I'll get some candles in, just in case...

Excellent question!



Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
I went to a car show yesterday and got poured on! Paddy's Pig[_7_] alt.binaries.pictures.weather (Weather Photos) 2 May 17th 11 06:57 AM
The Ship that went missing whilst looking for the ships that went missing! Lawrence Jenkins uk.sci.weather (UK Weather) 0 July 29th 10 07:24 PM
Not sure where this one went Edward Erbeck alt.binaries.pictures.weather (Weather Photos) 6 September 8th 08 02:24 PM
The Year the earth Went Wild Tonight on Flannel Four 8pm lawrence Jenkins uk.sci.weather (UK Weather) 3 December 27th 05 03:06 PM
The newsgroup that went away Rogman97 ne.weather.moderated (US North East Weather) 0 November 26th 04 09:52 PM


All times are GMT. The time now is 05:13 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 Weather Banter.
The comments are property of their posters.
 

About Us

"It's about Weather"

 

Copyright © 2017