[Greenbuilding] Net Zero Carbon Emissions Economy

[sanjay jain]

Agreed on airlines tickets. A recent TV ad caught my attention. Freight rail claims to ship around 50 tonnes per person per year in the US. There's no way my consumption requires that much train transport! And that's just rail, what about trucks and air!
~sanjay
Norbert Senf wrote:



A number of years ago I saw a statistic from the CIA that the total world petroleum production divided by the world population is equal to something like 2 litres per person day. Since most of us G-20 inhabitants use much more than 2 litres per day, a lot of people are obviously using less. Sobering thought, when shopping for deals on airline tickets......................N
On Wed, Mar 9, 2016 at 9:40 AM, conservation architect <elitalking at rockbridge.net> wrote:

1.66 tons co2 equivalent emissions/person to be fair An important concept emerged in the COP21 (Climate Change) conference in Paris last December.  195 countries articulated a need to achieve a net zero carbon emissions economy.  This requires us to meet our economic needs in a way that does not increase carbon concentration.   This brings up the question of what is our maximum average emissions to achieve this.  Given the limits of the atmosphere to absorb carbon safely, this average represents what would be fair for each of us to consume globally.  Emissions-Sequestration <= zero  More broadly the formula includes aspects that include the feedbacks such as diminished reflective ice, to: Heat increasing developments – heat reducing developments <= zero The following is based on my analysis and not a conclusion read from a paper by a real scientist.  Clarifications, corrections or additions are welcome.   The graphic below is from IPCC report regarding emissions from fossil fuel and land use (human caused), vegetation & land (natural) and ocean (natural).  I use the term natural loosely, because the sequestration rates for vegetation, land and ocean are likely higher because of the high concentration of carbon created by anthropogenic (human caused) burning of fossil fuels and land use (deforestation).  Since Ocean sequestration over what they emit causes acidification, we really need to balance our individual emissions with vegetation and land.  These figures do not include the sequestration from some undetermined human method.  So far, bio char technology is the only method I see on the horizon that does not have huge risk.    https://www.skepticalscience.com/human-co2-smaller-than-natural-emissions.htm Vegetation and Land has net sequestration (439-450) 11gigatons/world population 7.3 billion people=1.66 tons co2 emissions/person to achieve net zero carbon emissions. Therefore, if the world achieved an average of 1.66 tons of co2 emissions equivalent, we would not longer be adding GHG to the atmosphere.  I think it would be useful to recognize the level of performance needed to become harmless to the climate.  Beacause of the delay in achieving this standard, we really need to be net negative.  However, conceptually I think this is a useful concept to understand.   
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-- 
Norbert Senf
Masonry Stove Builders
25 Brouse Road, RR 5
Shawville Québec J0X 2Y0
819.647.5092
www.heatkit.com
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