Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/tc-2017-182
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
04 Sep 2017
Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal The Cryosphere (TC) and is expected to appear here in due course.
Effects of short-term variability of meteorological variables on soil temperature in permafrost regions
Christian Beer1,2, Philipp Porada1,2, Altug Ekici1,3, and Matthias Brakebusch1,2 1Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, 10691 Stockholm, Sweden
2Bolin Centre for Climate Research, Stockholm University, 10691 Stockholm, Sweden
3Uni Research Climate, Bjerknes Centre for Climate Research, Bergen, Norway
Abstract. Effects of the short-term temporal variability of meteorological variables on soil temperature in northern high latitude regions have been investigated. For this, a process-oriented land surface model has been driven using an artificially manipulated climate dataset. Climate variability mainly impacts snow depth, and the thermal diffusivity of lichens and bryophytes. This latter effect is of opposite direction in summer and winter in most regions. These impacts of climate variability on insulating surface layers together substantially alter the heat exchange between atmosphere and soil. As a result, soil temperature is 0.1 to 0.8 °C higher when climate variability is reduced. Earth system models project warming of the Arctic region but also increasing variability of meteorological variables and more often extreme meteorological events. Therefore, our results show that projected future increases in permafrost temperature and active-layer thickness in response to climate change will be lower i) when taking into account future changes in short-term variability of meteorological variables, and ii) when representing dynamic snow and lichen and bryophyte functions in land surface models.

Citation: Beer, C., Porada, P., Ekici, A., and Brakebusch, M.: Effects of short-term variability of meteorological variables on soil temperature in permafrost regions, The Cryosphere Discuss., https://doi.org/10.5194/tc-2017-182, in review, 2017.
Christian Beer et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC1: 'review1', Anonymous Referee #1, 20 Sep 2017 Printer-friendly Version 
AC1: 'Response to RC1', C. Beer, 08 Dec 2017 Printer-friendly Version Supplement 
 
RC2: 'Review of Beer et al. manuscript', Anonymous Referee #2, 11 Nov 2017 Printer-friendly Version 
AC2: 'Response to RC2', C. Beer, 08 Dec 2017 Printer-friendly Version Supplement 
Christian Beer et al.
Christian Beer et al.

Viewed

Total article views: 313 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
219 85 9 313 1 11

Views and downloads (calculated since 04 Sep 2017)

Cumulative views and downloads (calculated since 04 Sep 2017)

Viewed (geographical distribution)

Total article views: 313 (including HTML, PDF, and XML)

Thereof 309 with geography defined and 4 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 20 Feb 2018
Publications Copernicus
Download
Short summary
Idealized model experiments demonstrate that, in addition to a gradual climate change also changing daily to weekly variability of meteorological variables and extreme events will have an impact on mean annual ground temperature in high latitude permafrost areas. In fact, results of the land surface model experiments show that the projected increase of variability of meteorological variables leads to cooler permafrost soil in contrast to an otherwise soil warming in response to climate change.
Idealized model experiments demonstrate that, in addition to a gradual climate change also...
Share