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mfb- t1_j44dlwu wrote

Reply to comment by EngineeringFetish in Since the world is getting warmer, is the arctic treeline being pushed back? by JanniesStopBanningMe

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))".

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tim36272 t1_j46e9g2 wrote

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

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