Getting to Net-zero Emissions

March 11, 2015 7:32 pm0 comments
Getting to Net-zero Emissions

It is looking increasingly likely, but not a given, that a reference to global net-zero emissions or even a specific goal to achieve net-zero emissions by a certain date (e.g. end of the century) will appear in the climate deal that is expected to emerge from the Paris COP at […]

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What can really be done by 2050?

February 15, 2015 7:20 pm0 comments
What can really be done by 2050?

The calls for climate action are becoming louder and bolder as the weeks continue to countdown towards COP21 in Paris. Perhaps none have been as bold as the recent call by The B Team for governments to commit to a global goal of net-zero greenhouse gas emissions by 2050, and […]

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The answer lies after 2050, probably not before

January 13, 2015 4:46 pm1 comment
Peak warming vs cumulative carbon

The global energy system works on timescales of decades rather years. When considering the changes required in managing the climate issue, the short to medium term takes us to 2050 and the long term is 2100! As such, drawing long term conclusions based on a 2050 outlook raises validity issues. […]

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What did the IPCC actually say?

December 6, 2014 2:01 pm0 comments
What did the IPCC actually say?

COP20 is now underway in Lima and I have been on the newly created site for most of the week. Less than three months ago this was apparently an empty piece of land in a large Peruvian government complex, but now it is a bustling and well fitted out set […]

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Uncertainty doesn’t imply nothing is known or nothing should be done

October 17, 2014 3:39 pm3 comments
Climate Forcing and Climate Sensitivity with ranges of Lewis and Crok paper and IPCC AR5

While Judith Curry brings up some interesting notions in ‘Climate Sensitivity Uncertainy‘, I don’t agree with many of her arguments and conclusions. I’m pleased that Dr. Curry acknowledges that “uncertainty in itself is not a reason for inaction” (see also ‘Why Climate Uncertainty is No Excuse for Doing Nothing‘ on […]

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Climate Sensitivity Uncertainty

October 3, 2014 7:20 pm3 comments
Nic Lewis and Judith Curry graph on ECS and TCR results from recent paper in Climate Dynamics

In a press conference ahead of the UN Climate Summit two week ago, UN Secretary-General Ban-Ki Moon stated: “Action on climate change is urgent.  The more we delay, the more we will pay in lives and in money.” The recently appointed UN Messenger of Peace Leonardo DiCaprio stated “The debate is over. […]

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