Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5786509 | Quaternary Science Reviews | 2017 | 13 Pages |
Abstract
Simulated and reconstructed temperatures are mismatched in Alaska. Pollen data suggest strong early-Holocene warming, while the simulations indicate constant Holocene cooling, and chironomid data show a stable trend. Meanwhile, a high frequency of Alaskan peatland initiation before 9 ka can reflect a either high temperature, high soil moisture or large seasonality. In high-latitude Siberia, although simulations and proxy data depict high Holocene temperatures, these signals are noisy owing to a large spread in the simulations and between pollen and chironomid results. On the whole, the Holocene climate evolutions in most regions (Fennoscandia, Greenland and Canada) are well established and understood, but important questions regarding the Holocene temperature trend and mechanisms remain for Alaska and Siberia.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Yurui Zhang, Hans Renssen, Heikki Seppä, Paul J. Valdes,