Long-term firn and mass balance modelling for Abramov glacier, Pamir Alay
- 1Department of Geosciences, University of Fribourg, Fribourg, Switzerland
- 2Department of Earth Sciences, Uppsala University, Uppsala, Sweden
- 3WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
- 4GIS consultant, Auckland, New Zealand
- 1Department of Geosciences, University of Fribourg, Fribourg, Switzerland
- 2Department of Earth Sciences, Uppsala University, Uppsala, Sweden
- 3WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
- 4GIS consultant, Auckland, New Zealand
Abstract. Several regional studies identified heterogeneous mass changes in western High Mountain Asia over the last decade. Causes for these mass change patterns are still not fully understood. Modelling the physical interactions between glacier surface and atmosphere over several decades can provide insight into relevant processes. Such model applications, however, have data needs which are usually not met in these data scarce regions. Unique glaciological and meteorological data exist for the Abramov glacier in the Pamir Alay range. In this study, we use weather station measurements in combination with downscaled reanalysis data to force a coupled surface energy balance–multilayer subsurface model for Abramov glacier for 52 years. Available in situ data are used for model calibration and validation. We find an overall negative mass balance of −0.27m w.e. a−1 for 1968/1969–2019/2020 and a loss of firn pore space causing a reduction of internal accumulation. Despite increasing air temperatures, we do not find an acceleration of glacier-wide mass loss over time. Such an acceleration is compensated by increasing precipitation rates (+0.0022 m w.e. a−1, significant at a 90 % confidence level). Our results indicate a significant correlation between annual mass balance and precipitation (R2 = 0.72).
- Preprint
(8563 KB) -
Supplement
(603 KB) - BibTeX
- EndNote
Marlene Kronenberg et al.
Status: final response (author comments only)
-
RC1: 'Comment on tc-2021-380', Tobias Zolles, 17 Feb 2022
The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2021-380/tc-2021-380-RC1-supplement.pdf
- AC1: 'Reply to Reviewer I', Marlene Kronenberg, 24 May 2022
-
RC2: 'Comment on tc-2021-380', Lindsey Nicholson, 15 Mar 2022
The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2021-380/tc-2021-380-RC2-supplement.pdf
- AC2: 'Reply to Reviewer II', Marlene Kronenberg, 24 May 2022
Marlene Kronenberg et al.
Data sets
EBFM initial conditions Kronenberg, Marlene, van Pelt, Ward, Machguth, Horst, Fiddes, Joel, Hoelzle, Martin, & Pertziger, Felix https://zenodo.org/record/5773796#.YbS5xlkxlhE
EBFM Abramov topo grid Kronenberg, Marlene, van Pelt, Ward, Machguth, Horst, Fiddes, Joel, Hoelzle, Martin, & Pertziger, Felix https://zenodo.org/record/5773796#.YbS5xlkxlhE
EBFM Abramov forcing Kronenberg, Marlene, van Pelt, Ward, Machguth, Horst, Fiddes, Joel, Hoelzle, Martin, & Pertziger, Felix https://zenodo.org/record/5773796#.YbS5xlkxlhE
Model code and software
EBFM_abramov Kronenberg, Marlene, van Pelt, Ward, Machguth, Horst, Fiddes, Joel, Hoelzle, Martin, & Pertziger, Felix https://zenodo.org/record/5773796#.YbS5xlkxlhE
Marlene Kronenberg et al.
Viewed
HTML | XML | Total | Supplement | BibTeX | EndNote | |
---|---|---|---|---|---|---|
393 | 187 | 21 | 601 | 45 | 13 | 15 |
- HTML: 393
- PDF: 187
- XML: 21
- Total: 601
- Supplement: 45
- BibTeX: 13
- EndNote: 15
Viewed (geographical distribution)
Country | # | Views | % |
---|
Total: | 0 |
HTML: | 0 |
PDF: | 0 |
XML: | 0 |
- 1