Remote sensing quantifies widespread abundance of permafrost region disturbances across the Arctic and Subarctic


Contact
ingmar.nitze [ at ] awi.de

Abstract

Local observations indicate that climate change and shifting disturbance regimes are causing permafrost degradation. However, the occurrence and distribution of permafrost region disturbances (PRDs) remain poorly resolved across the Arctic and Subarctic. Here we quantify the abundance and distribution of three primary PRDs using time-series analysis of 30-m resolution Landsat imagery from 1999 to 2014. Our dataset spans four continental-scale transects in North America and Eurasia, covering ~10% of the permafrost region. Lake area loss (−1.45%) dominated the study domain with enhanced losses occurring at the boundary between discontinuous and continuous permafrost regions. Fires were the most extensive PRD across boreal regions (6.59%), but in tundra regions (0.63%) limited to Alaska. Retrogressive thaw slumps were abundant but highly localized (<10−5%). Our analysis synergizes the global-scale importance of PRDs. The findings highlight the need to include PRDs in next-generation land surface models to project the permafrost carbon feedback.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
Scopus/ISI peer-reviewed
Publication Status
Published
Eprint ID
48874
DOI 10.1038/s41467-018-07663-3

Cite as
Nitze, I. , Grosse, G. , Jones, B. M. , Romanovsky, V. E. and Boike, J. (2018): Remote sensing quantifies widespread abundance of permafrost region disturbances across the Arctic and Subarctic , Nature Communications, 9 (1) . doi: 10.1038/s41467-018-07663-3


Download
[img]
Preview
PDF
s41467-018-07663-3.pdf

Download (5MB) | Preview

Share


Citation

Research Platforms
N/A

Campaigns

Funded by
info:eu-repo/grantAgreement/EC/FP7/338335


Actions
Edit Item Edit Item