Originally posted on Iowa Climate Science Education: 3 to 4 degrees centigrade warmer, in fact. Far greater than recent warming. The new paper, Kulman et al. 2018 relies on paleoclimatology, which as we’ve learned from Mann, can be taken with a grain of salt. Because trees may only grow within narrowly-defined temperature ranges and elevations…

via Inconvenient: new treeline paper suggest temperatures were warmer 9000 years ago — Rangitikei Enviromental Health Watch