Articles | Volume 19, issue 11
Research article
15 Nov 2023
Research article |  | 15 Nov 2023

Moss kill dates and modeled summer temperature track episodic snowline lowering and ice cap expansion in Arctic Canada through the Common Era

Gifford H. Miller, Simon L. Pendleton, Alexandra Jahn, Yafang Zhong, John T. Andrews, Scott J. Lehman, Jason P. Briner, Jonathan H. Raberg, Helga Bueltmann, Martha Raynolds, Áslaug Geirsdóttir, and John R. Southon


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • AC1: 'Additional Figure', Gifford H. Miller, 14 May 2023
  • RC1: 'Comment on egusphere-2023-737', Anonymous Referee #1, 04 Jun 2023
  • RC2: 'Comment on egusphere-2023-737', Anonymous Referee #2, 20 Jun 2023
    • AC3: 'Reply on RC2', Gifford H. Miller, 27 Jun 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish as is (23 Jul 2023) by Julie Loisel
AR by Gifford H. Miller on behalf of the Authors (25 Aug 2023)  Author's response   Manuscript 

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Gifford H. Miller on behalf of the Authors (09 Oct 2023)   Author's adjustment   Manuscript
EA: Adjustments approved (10 Oct 2023) by Julie Loisel
Short summary
Receding Arctic ice caps reveal moss killed by earlier ice expansions; 186 moss kill dates from 71 ice caps cluster at 250–450, 850–1000 and 1240–1500 CE and continued expanding 1500–1880 CE, as recorded by regions of sparse vegetation cover, when ice caps covered > 11 000 km2 but < 100 km2 at present. The 1880 CE state approached conditions expected during the start of an ice age; climate models suggest this was only reversed by anthropogenic alterations to the planetary energy balance.