On Sep 12, 2009, at 12:20 PM, David Jonsson wrote:
I saw this on
http://en.wikipedia.org/wiki/Vostok,_Antarctica#Climate
The above article states: "The lowest reliably measured temperature
on Earth of −89.2 °C (−128.6 °F) was in Vostok on 21 July 1983
[2] (See List of weather records) Lower temperatures occurred higher
up towards the summit of the ice sheet as temperature decreases with
height."
Details? What are the proportions? Only lack of CO2?
Explanations?
Seems pretty obvious. See:
http://en.wikipedia.org/wiki/Dry_ice
"CO2 changes from a solid to a gas at −78.5 °C (−109.3 °F) with
no intervening liquid form, through a process called sublimation. The
opposite process is called deposition, where dry ice changes from the
the gas to solid phase."
The CO2 is frozen right out of the air at -78.5 °C, well above the
89.2 °C low recorded above
On Sep 12, 2009, at 12:57 PM, David Jonsson wrote:
Oxygen is also scarce. Why?
The article tells you: "An acute lack of oxygen because of its high
altitude at 3,488 meters (11,444 ft)."
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
