Professor @uOttawa studying contentious climate politics, re: aviation/rail; livestock/meat; GDP/Growth! Editor @SPE_Journal / Host https://t.co/9qZgWycdzP
2/ First, there's been a lot of confusion in the media and especially here on social media about what the pre-print meant by "The collapse time is estimated between 2037-2064... with a mean of 2050". The AMOC current is bi-modal, so generally it's ON or OFF, and once it passes a tipping point, MODELS suggest that there's a roughly 100-year freefall period towards collapse. Many were unclear (and I admit, I was not fully clear myself, and I apologize) on whether this implied that the *tipping point* has already occurred roughly 70 years ago and therefore that the current itself would be 'OFF' by 2050, or whether the *tipping point* was likely to be reached around 2050, meaning the full shutting off of the current would till be over a Century from now, closer to 2150.
2/ WTF is the AMOC? It’s the ‘Atlantic Meridional Overturning Circulation’, which is a fancy name for an important ocean current that effectively serves as a ‘heat pump’ for Earth - bringing warm surface water from the tropics Northward, releasing its heat, sinking, then bringing deeper cold water back South.
2) In 1998 Mann and colleagues published a very important paper in Nature. They conducted an impressive study compiling temperature reconstructions for the last 6 Centuries, and found a startling 'hockey stick' shape: The world was warmer than it had been in nearly 600+ years! 
2/ The study reviews chances of keeping global warming to within Paris Agreement bounds of 1.5C to 2.0C given the latest understandings of 5 key constraints: geophysical; technological; institutional; socio-cultural; and economic...
1) This story starts in 1988 when the Mulroney government created an Independent advisory council of experts called the National Roundtable on the Environment and the Economy. For 25 years it produced numerous reports on environmental policy, advising governments.
2/ It is well known that cities warm more than surrounding rural areas. As the IPCC recently wrote in AR6: “Urban areas experience air temperatures that can be SEVERAL DEGREES Celsius warmer than surrounding areas, especially during the night” 
The general idea is that melting sea ice within the warming Arctic is causing instability in the jet stream, resulting in large Rossby waves which during the winter season can push frigid Arctic air deep into areas where they wouldn’t in a more stable climate…
On one side there are what we might call “the traditionalists”. These folks emphasize how this heat falls within the boundaries of how we would expect the Earth system to behave given the historical trajectory of fossil Carbon emissions, combined with an El Niño transition year. 
Sadly, domestic forest management and logging, combined with HUMAN-CAUSED GLOBAL WARMING, are on track to COMPLETELY TRANSFORM Canada’s boreal forest this Century! The more extreme climate warming scenarios could "KILL" parts of the boreal [yes, scientists used that word!👀] 
FIRST, let's clear the confusion around TRENDS for NUMBER OF FIRES:
