Go Back   IceInSpace > General Astronomy > General Chat
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #21  
Old 31-03-2011, 08:42 PM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,473
Quote:
Originally Posted by AstralTraveller View Post
Well, if the oceans and air get warmer there will be more evaporation. And what goes up ......
Well...not really.

Mercury.... 4x more solar flux than Venus. Temperature... about 530K

Venus. 25% the solar flux of Mercury, but with a really dense CO2-enriched atmosphere. Temperature? about 730K!

Earth? TBA

There is a web write-up on the basic Physics here.

http://www.globalchange.umich.edu/gl...nergy_balance/
Reply With Quote
  #22  
Old 31-03-2011, 09:05 PM
tlgerdes's Avatar
tlgerdes (Trevor)
Love the moonless nights!

tlgerdes is offline
 
Join Date: Mar 2009
Location: Sydney
Posts: 2,285
Why does everyone love comparing to Venus, with an atmosphere 93x more dense than ours.

You may as well compare to Mars then as well, with an atmosphere made up of 95% CO2 but an atmosphere 150x less dense than ours.

Mercury has next to nothing in the way of an atmosphere. Its atmosphere having been boiled away due to proximity to the sun.
Reply With Quote
  #23  
Old 31-03-2011, 09:23 PM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,473
Quote:
Originally Posted by tlgerdes View Post
Why does everyone love comparing to Venus, with an atmosphere 93x more dense than ours.....
.
I don't think everyone does, but if they do.....

...... it's likely to make the point: runaway geeenhouse can get very nasty by making a benign planetary atmosphere both hot and dense.
Reply With Quote
  #24  
Old 31-03-2011, 11:36 PM
AstralTraveller's Avatar
AstralTraveller (David)
Registered User

AstralTraveller is offline
 
Join Date: Mar 2008
Location: Wollongong
Posts: 3,819
Quote:
Originally Posted by Peter Ward View Post
Well...not really.

Mercury.... 4x more solar flux than Venus. Temperature... about 530K

Venus. 25% the solar flux of Mercury, but with a really dense CO2-enriched atmosphere. Temperature? about 730K!

Earth? TBA

There is a web write-up on the basic Physics here.

http://www.globalchange.umich.edu/gl...nergy_balance/


I was referring to raising the temperature by 1-2K.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 11:18 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement