Re: It is all irrelevant. because Wilco1 gets it wrong
oh dear
http://en.academic.ru/dic.nsf/enwiki/239465
partial quote
In addition to the cold temperatures, other factors make Vostok one of the most difficult places on Earth for human habitation:
*An almost complete lack of moisture in the air.
*An average windspeed of 5 m/s (18 km/h), sometimes rising to as high as 27 m/s (97 km/h).
*An acute lack of oxygen because of the high 3,488-meter (11,444 ft) altitude. Accounting for the fact that oxygen density gets lower as one approaches the poles, it is estimated that the oxygen density at Vostok is equivalent to that of a mountain over 5,000 meters (16,400 ft) tall at more temperate latitudes.
*A higher ionization of the air.
*A partial pressure of gases that is different from that which most humans are used to.
*A lack of carbon dioxide in the air, which leads to irregularities in a person's breathing mechanism.
*A polar night that lasts three months of the year.
Note this bit
*A lack of carbon dioxide in the air, which leads to irregularities in a person's breathing mechanism.
with reports of people waking up 'not breathing' due to the low CO2 partial pressure.
and then go here : http://www.ivhhn.org/index.php?option=com_content&view=article&id=84
Exposure limits
(% in air)
Health Effects
2-3 Unnoticed at rest, but on exertion there may be marked shortness of breath
3 Breathing becomes noticeably deeper and more frequent at rest
3-5 Breathing rhythm accelerates. Repeated exposure provokes headaches
5 Breathing becomes extremely laboured, headaches, sweating and bounding pulse
7.5 Rapid breathing, increased heart rate, headaches, sweating, dizziness, shortness of breath, muscular weakness, loss of mental abilities, drowsiness, and ringing in the ears
Note that it isn't until 7.5 parts per hundred (not PARTS PER MILLION) that we see 'loss of mental abilities.
At 2 to 3 PARTS PER HUNDRED the effects of extremely high CO2 concentration is not even noticed.
390 parts per million 390/1000000 as against 2/100 or 20000 parts per million ( I don't think I've dropped an extra zero here - check it yourself) and you can work out how many times that is larger....
You really want to worry about 390 ppm when we don't have any problems until we get 20000 ppm ????
Next
What on earth are you on about quote you :
Still trying to deny that burning oil causes an increase CO2?
end quote
NO. what an stupid comment - I have NEVER denied burning oil or coal or methane or ethane etc etc doesn't give of CO2. I suppose you are one of those people who keep telling me I deny the climate changes ? Well; I have news for you; the climate has ALWAYS changed. ALWAYS
So - how much CO2 is given of by the earth's non-human reactions ? And how much is added by the human use of burning things ? Given we do not even know how much CO2 is given off by sub-sea volcanic action - except it can be estimated in Giga tons per annum
Amongst other important thing PLANTS STOP PHOTO SYNTHESIZING below about 150 ppm CO2; and plants do really really well at 5000ppm. Why have plants evolved to bloom in 'high' CO2 concentrations ? Why do commercial green house gardeners run their green houses with >1000ppm of CO2 -- because plants are better adapted to high levels of CO2