Dry ice on earth

  • #1
Loren Booda
3,119
4
Dry ice forms at -109.6oF. The record low natural temperature measured on Earth (Antarctica) was approximately -129oF.

Does the solidification of carbon dioxide mediate temperature there, either by heat of sublimation or reduction of greenhouse effect?

Would long-term global climate be critically affected by such a phase change?
 

Answers and Replies

  • #2
marcus
Science Advisor
Gold Member
Dearly Missed
24,770
791
Originally posted by Loren Booda
Dry ice forms at -109.6oF. The record low natural temperature measured on Earth (Antarctica) was approximately -129oF.

Does the solidification of carbon dioxide mediate temperature there, either by heat of sublimation or reduction of greenhouse effect?

Would long-term global climate be critically affected by such a phase change?

Loren I imagine that dry ice forms at that temperature
in CO2 of one atmosphere pressure

but the (partial) pressure of CO2 in our atmosphere is only
on the order of a percent of that----i forget exactly, some fraction of a percent

so the CO2 in our atmosphere is not really at one atmosphere pressure
and I doubt it could form dry ice at the temp you indicate

there are some table is the CRC Handb. of Chem and Physics about the vaporpressure of dry ice at various temps that might allow one to figure out

I didnt look up anything so can't speak with assurance but i do believe the partial pressure matters
 

Suggested for: Dry ice on earth

Replies
40
Views
2K
  • Last Post
2
Replies
35
Views
791
Replies
18
Views
1K
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
5
Views
1K
Replies
9
Views
17K
  • Last Post
Replies
4
Views
741
  • Last Post
Replies
7
Views
678
Replies
5
Views
234
Top