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Description
| The dataset is fully described in:
Charalampidis, C., Van As, D., Colgan, W. T., Fausto, R. S., Macferrin, M. and Machguth, H.: Thermal tracing of retained meltwater in the lower accumulation area of the Southwestern Greenland ice sheet, Ann. Glaciol., 57(72), 1–10, https://doi.org/10.1017/aog.2016.2, 2016.
Please cite this publication if you use these data.
These data were also used in:
Charalampidis, C. and D. van As (2015). Observed melt-season snow-pack evolution on the Greenland ice sheet. Geol. Surv. Denmark Greenland Bull. 33, 65–68.
Charalampidis, C. (2016). Climatology and firn processes in the lower accumulation area of the Greenland ice sheet. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1372. 81 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9571-8.
Machguth, H., M. MacFerrin, D. van As, J. E. Box, C. Charalampidis, W. T. Colgan, R. S. Fausto, H. A. J. Meijer, E. Mosley-Thompson, and R. S. W. van de Wal (2016). Greenland meltwater storage in firn limited by near-surface ice formation. Nat. Clim. Change 6(4), 390–393.
Description:
The Snow Processes in the Lower Accumulation Zone (SPLAZ) campaign was conducted during the first week of May 2012 at the PROMICE weather station site KAN_U (67°0′N and 47°1′W, at 1840 m a.s.l., Fausto et al., 2021). Firn temperatures were measured by three higher-resolution thermistor strings about 50 m away from the PROMICE station. Two of these thermistor strings were 10 m long, with 0.5 m vertical spacing between thermistors above 5 m depth and 2.5 m vertical spacing below 5 m depth. The third (main) string was 15 m long with 0.25 m vertical spacing between 1 and 3.5 m depth, 0.5 m vertical spacing between 3.5 and 10 m depth, and 2.5 m vertical spacing below 10 m depth.These subsurface temperatures can be found in the file "SPLAZ_data_Charalampidis_etal_2016.xlsx"
The SPLAZ station used RS 100 kΩ negative-temperature coefficient thermistors, which have a thermal time constant of 10 s and a reported uncertainty of ± 0.2°C at temperatures below 0°C. The SPLAZ station also monitored: (i) snow temperatures by six high-precision temperature probes (107 Campbell Scientific; Charalampidis and Van As, 2015), (ii) air temperature via a radiation-shielded 107 Campbell probe, (iii) surface height via an SR50-L sonic ranger and (iv) surface temperature via a downward-facing Eppley PIR longwave radiation sensor. Measurements were collected at 10 min time intervals over a period of 9 months following installation. During the period of observations, three thermistors failed.
Additional files are provided in the dataset: fieldwork pictures, raw thermistor data file and firn density comparison between 2012 and 2013 as used in Machguth et al. (2016).The density and stratigraphy profiles measured at KAN_U in 2012 and 2013 can be found in:
MacFerrin, Michael (2019): Greenland Ice Slabs Data. figshare. Dataset. https://doi.org/10.6084/m9.figshare.8309777.v1
We are grateful to our Snow Processes in the Lower Accumulation Zone (SPLAZ) fellow expedition members A. Mikkelsen, R. Pettersson, K. Lindbäck, A. Hubbard, and S. Doyle. We are also grateful to S. Nielsen of GEUS for technical support, as well as M. Eijkelboom, W. Gorter, J. Lenaerts, and P. Smeets of IMAU for field support.
Additional references:
Charalampidis, C., van As, D., Box, J. E., van den Broeke, M. R., Colgan, W. T., Doyle, S. H., Hubbard, A. L., MacFerrin, M., Machguth, H., and Smeets, C. J. P. P.: Changing surface–atmosphere energy exchange and refreezing capacity of the lower accumulation area, West Greenland, The Cryosphere, 9, 2163–2181, https://doi.org/10.5194/tc-9-2163-2015, 2015.
Fausto, R. S., van As, D., Mankoff, K. D., Vandecrux, B., Citterio, M., Ahlstrøm, A. P., Andersen, S. B., Colgan, W., Karlsson, N. B., Kjeldsen, K. K., Korsgaard, N. J., Larsen, S. H., Nielsen, S., Pedersen, A. Ø., Shields, C. L., Solgaard, A. M., and Box, J. E.: Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station data, Earth Syst. Sci. Data, 13, 3819–3845, https://doi.org/10.5194/essd-13-3819-2021, 2021. |
