EngineeringFetish t1_j42b8yn wrote on January 12, 2023 at 6:12 PM

Yes it is by 40-50m a year, It used to be growing very slowly at a few centimetres a year and now it's receding drastically

There's a good book by Ben Rawlence called The Treeline that talks about climate change and the Arctic Treeline

420LongDong69 t1_j43rg1x wrote on January 12, 2023 at 11:31 PM

do you have a source for the 40 to 50m?

EngineeringFetish t1_j43wwvy wrote on January 13, 2023 at 12:08 AM

>book by Ben Rawlence called The Treeline that talks about climate change and the Arctic Treeline

It was from him, I trust the source as he's quite dedicated to the topic of climate change and environmental preservation

But there's no widely acceptable study for this other than Ben Rawlence

And all the facts on The Arctic heating up and the effects of climate change in the are a seems to match up with the claim.

mfb- t1_j44dlwu wrote on January 13, 2023 at 2:07 AM

Is that 40-50 m north per year? That would be just a few kilometers per century which sounds very slow. 40-50 m in height on the other hand would be extremely fast. Is there some conversion factor I'm missing? This study cited by your reference talks about "29 and 27 altitudinal metres (0.6 and 0.5 m·yr^(−1))".

tim36272 t1_j46e9g2 wrote on January 13, 2023 at 2:14 PM

The concern is acceleration: if it's 40-50m horizontally per year now then it could be 400-500m per year in 20 years.