Erik Schytt Mannerfelt
Geodetic mass balance estimates of Mårmaglaciären between 1959, 1978, 1991, 2008, 2016 and 2021.
The glacier is located in the Mårma massif, in northern Sweden, approximately 25 kilometres to the northwest from the Tarfala Research Station, which is Stockholm University’s centre for glaciological and alpine research.
The estimates, derived from Digital Elevation Model (DEM) differencing, enable a high accuracy understanding of the mass change of the glacier since the mid-1900s. They can also be used for constraints of future mass loss predictions.
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Citation
Erik Schytt Mannerfelt (2022) Geodetic mass balance data for Mårmaglaciären, northern Sweden, 1959 – 2021. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/schytt-mannerfelt-2022-marma-geodetic-1
References
Huss M (2013) Density assumptions for converting geodetic glacier volume change to mass change. The Cryosphere 7:877 – 887. https://doi.org/10.5194/tc-7-877-2013
Schytt Mannerfelt E (2022a) Digital elevation models from Mårmaglaciären and Mårmapakteglaciären, northern Sweden, 1959 – 2021. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/schytt-mannerfelt-2022-marma-dem-1
Schytt Mannerfelt E (2022b) Code to prepare, homogenise and analyse digital elevation models from Mårmaglaciären and Mårmapakteglaciären, northern Sweden. Software version 1.0.0. Bolin Centre Code Repository. https://doi.org/10.57669/schytt-mannerfelt-2022-marma-1.0.0
Data description
Geodetic mass balance of Mårmaglaciären from 1959–2021.
The data are direct products of Digital Elevation Models (DEMs) available as a separate dataset by Schytt Mannerfelt (2022a).
The dataset consists of one table in a comma separated .csv format, with the following column headers:
- Start area: The area of the "start year" in m²
- End area: The area of the "end year" in m²
- Mean area: The average of the start and end year areas in m²
- Merged area: The total area of the dissolved (merged) start and end outlines in m².
- dH: Elevation change in m
- dV: Volume change in m³
- MB: Geodetic mass balance in m water equivalent (w.e.)
- * error: The sigma-1 uncertainty of the measurement.
- Pixel count: The number of pixels that were included in the analysis.
The geodetic mass balance is calculated using an assumed density of volume change of 850±60 kg / m³ (Huss 2013).
Comments
The source code for the analysis has been made available by Schytt Mannerfelt (2022b).
Erik Schytt Mannerfelt was affiliated with the Department of Physical Geography, Stockholm University, when this dataset was prepared.