| Re: "Humans 'very likely' making earth warmer" is wrong
"Don Klipstein" <don@manx.misty.com> wrote in message
news:slrnes4rue.2mm.don@manx.misty.com...
> In article <a4twh.15247$ji1.4936@newssvr12.news.prodigy.net >, Lee K wrote:
>>
>>"donquijote1954" <nolionnoproblem@hotmail.com> wrote in message
>>news:1170357571.517834.230020@p10g2000cwp.google groups.com...
>>>
>>> there is a
>>> 90 percent chance that global warming is human-caused.
>>
>>
>>" While humanity's three billion
>> tonnes (gigatonnes, or GT) per year net contribution to the
>> atmosphere's CO2 load appears large on a human scale, it is actually
>> less than half of 1% of the atmosphere's total CO2 content (750-830
>> GT). The CO2 emissions of our civilization are also dwarfed by the
>> 210 GT/year emissions of the gas from Earth's oceans and land.
>> Perhaps even more significant is the fact that the uncertainty in the
>> measurement of atmospheric CO2 content is 80 GT -- making three GT
>> seem hardly worth mentioning."
>
> Human activity is adding more like 25 gigatons of CO2 to the
> atmosphere annually, just from burning of fossil fuels. The latest
> figures are about 7 PgC, which is 7 petagrams of carbon annually, and
> multiply that by 44/12 to get petagrams (gigatons) of CO2.
>
> All the other carbon is just circulating around the biosphere,
> hydrosphere and atmosphere. Burning of fossil fuels is adding carbon to
> these at a rate of 7 gigatons of carbon, or 25 gigatons of CO2, per year.
>
> - Don Klipstein (don@misty.com)
Credentialed scientists in the cited article differ with your take: "The CO2
emissions of our civilization are also dwarfed by the 210 GT/year emissions
of the gas from Earth's oceans and land."
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