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Australia a carbon sink? (Read 1196 times)
lee
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Re: Australia a carbon sink?
Reply #15 - Jan 26th, 2021 at 1:28pm
 
Dnarever wrote on Jan 26th, 2021 at 12:42pm:
This is based purely on temporary greening for a few wet years.



And of course you have the proof? In your back pocket? You lost it? Grin Grin Grin Grin Grin Grin

Dnarever wrote on Jan 26th, 2021 at 12:42pm:
uess what happens to the carbon sink when this position reverses as is normal.



Show us where this has happened.

Dnarever wrote on Jan 26th, 2021 at 12:42pm:
That is right all the carbon is released again and Australia becomes the exact opposite of a carbon sink.



Only when and if petal. Grin Grin Grin Grin
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lee
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Re: Australia a carbon sink?
Reply #16 - Jan 26th, 2021 at 1:30pm
 
Laugh till you cry wrote on Jan 26th, 2021 at 12:59pm:
Australia is a bigger intelligence sink than a carbon sink.


Only with you in it. Wink
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lee
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Re: Australia a carbon sink?
Reply #17 - Jan 26th, 2021 at 6:16pm
 
Dnarever wrote on Jan 26th, 2021 at 12:42pm:
This is based purely on temporary greening for a few wet years.



Have a read of Barrett DJ (2002) Wink

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2002GB001860
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« Last Edit: Jan 26th, 2021 at 6:27pm by lee »  
 
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Dnarever
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Re: Australia a carbon sink?
Reply #18 - Jan 26th, 2021 at 7:30pm
 
Ajax wrote on Jan 26th, 2021 at 12:55pm:
Dnarever wrote on Jan 26th, 2021 at 12:45pm:
Ajax wrote on Jan 26th, 2021 at 9:13am:
Quote:
CSIRO estimate that the Australian

landscape has the biophysical potential to store an additional 1,000

million tonnes (Mt) of CO2e in soils and vegetation each year for the next 40 to 50 years.

Terrestrial carbon emissions (primarily from land clearing) are responsible for 14% of Australia’s annual greenhouse gas emissions.

From Wikipedia

The Australian government estimates that Australia's net emissions in 2017 were 556.4 million tonnes CO2-equivalent, to which the sectoral contributions were approximately as follows:

electricity, 33%;

transport, 18%;

stationary energy (excluding electricity), 17%;

agriculture, 13%;

fugitive emissions, 10%;

industrial processes, 6%;

waste, 3%.[3] This includes about 13% for non-electricity residential use.[4]

1000,000,000 tonnes of CO2e every year for the next 40 to 50 years.



Quote:
landscape has the biophysical
potential
to store an additional 1,000

million tonnes (Mt) of CO2e in soils and vegetation each year for the next 40 to 50 years.


I didn't right that one, its a quote.......!?

From CSIRO, wiki and below.

https://wentworthgroup.org/wp-content/uploads/2013/10/Optimising-Carbon-in-the-A...




Yes a qualified quote. One based on potential.

I would guess that not having Liberal governments would be one of the qualifiers ? No sequence of dry years another.

Commercial advantage of the area's not taken ?
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lee
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Re: Australia a carbon sink?
Reply #19 - Jan 26th, 2021 at 8:36pm
 
Dnarever wrote on Jan 26th, 2021 at 7:30pm:
Yes a qualified quote. One based on potential.



All studies of climate use potentials.

Here is one from the publisher's of John Cook's study for the 97% Wink - So hardly a denier site. Wink

"We found that peatlands, compared to forests, are characterized by higher growing season albedo, lower aerodynamic conductance, and higher surface conductance for an equivalent VPD. This combination of peatland surface properties results in a ~20% decrease in afternoon ABL height, a cooling (from 1.7 to 2.5 °C) in afternoon air temperatures, and a decrease in afternoon VPD (from 0.4 to 0.7 kPa) for peatland landscapes compared to forest landscapes. These biophysical climate impacts of peatlands are most pronounced at lower latitudes (~45°N) and decrease toward the northern limit of the boreal biome (~70°N). Thus, boreal peatlands have the potential to mitigate the effect of regional climate warming during the growing season. "

https://iopscience.iop.org/article/10.1088/1748-9326/abab34

Because it is a potential doesn't mean it doesn't exist. Or that it has to meet specific conditions for it to be true.

What potential does your study show that Australia has for carbon sequestration?

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lee
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Re: Australia a carbon sink?
Reply #20 - Jan 26th, 2021 at 9:09pm
 
Another study on biophysical potential -

"Biophysical potential of crop residues for biochar carbon sequestration, and co‐benefits, in Uganda"

https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/eap.1984

It is a potential until it is utilised. Like the power at the wall socket. If it is turned off -there is no power but the potential exists. You switch it on with something for a load and it works. Wink
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