Thread by @Peters_Glen

What is net-zero? Is it carbon neutral? CO₂ or GHG?

Did you know that 1.5°C scenarios reach net-zero CO₂ emissions around 2050, but net-zero GHG emissions around 2070?

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For a likely below 2°C scenario, the net-zero years are shifted back about 20 years.

In fact, many likely below 2°C scenarios don't require net-zero GHG emissions until after 2100.

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And why "net" and not just zero?

That is because it is hard to get all emissions completely to zero, & so some carbon dioxide removal is needed to clean up any remaining emissions.

The scale is important. How much CDR is possible?

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It is possible to have scenarios with much, much less Carbon Dioxide Removal, though very few of these are found in the scenario literature. We have a biased view!

Independent of the amount of carbon dioxide removal, rapid short-term emission reductions are essential.

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But we have to be careful people understand what net-zero is, otherwise we may "offset" our way to really high emissions & just create more climate problems.

Net-zero requires that you stop burning fossil fuels or emitting CO₂.

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That is a quick summary of my presentation on #NetZero.

Starts at 0830, but most will be in Norwegian. I will be in English at about 0845.

#klimafrokost

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klimastiftelsen.no/arrangement/kl…