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Article

Warm Arctic Proglacial Lakes in the ASTER Surface Temperature Product

1
Department of Environment and Geography, Heslington West Campus, University of York, York YO10 5NG, UK
2
Department of Geography, University of Sheffield, Sheffield S10 2TN, UK
3
Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Gustavious Paul Williams
Remote Sens. 2021, 13(15), 2987; https://doi.org/10.3390/rs13152987
Received: 31 May 2021 / Revised: 9 July 2021 / Accepted: 17 July 2021 / Published: 29 July 2021
(This article belongs to the Special Issue Applications of Remote Sensing in Limnology)
Despite an increase in heatwaves and rising air temperatures in the Arctic, little research has been conducted into the temperatures of proglacial lakes in the region. An assumption persists that they are cold and uniformly feature a temperature of 1 °C. This is important to test, given the rising air temperatures in the region (reported in this study) and potential to increase water temperatures, thus increasing subaqueous melting and the retreat of glacier termini from where they are in contact with lakes. Through analysis of ASTER surface temperature product data, we report warm (>4 °C) proglacial lake surface water temperatures (LSWT) for both ice-contact and non-ice-contact lakes, as well as substantial spatial heterogeneity. We present in situ validation data (from problematic maritime areas) and a workflow that facilitates the extraction of robust LSWT data from the high-resolution (90 m) ASTER surface temperature product (AST08). This enables spatial patterns to be analysed in conjunction with surrounding thermal influences, such as parent glaciers and topographies. This workflow can be utilised for the analysis of the LSWT data of other small lakes and crucially allows high spatial resolution study of how they have responded to changes in climate. Further study of the LSWT is essential in the Arctic given the amplification of climate change across the region. View Full-Text
Keywords: arctic temperatures; proglacial lake; lake surface water temperature; LSWT; ASTER surface temperature product arctic temperatures; proglacial lake; lake surface water temperature; LSWT; ASTER surface temperature product
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MDPI and ACS Style

Dye, A.; Bryant, R.; Dodd, E.; Falcini, F.; Rippin, D.M. Warm Arctic Proglacial Lakes in the ASTER Surface Temperature Product. Remote Sens. 2021, 13, 2987. https://doi.org/10.3390/rs13152987

AMA Style

Dye A, Bryant R, Dodd E, Falcini F, Rippin DM. Warm Arctic Proglacial Lakes in the ASTER Surface Temperature Product. Remote Sensing. 2021; 13(15):2987. https://doi.org/10.3390/rs13152987

Chicago/Turabian Style

Dye, Adrian, Robert Bryant, Emma Dodd, Francesca Falcini, and David M. Rippin. 2021. "Warm Arctic Proglacial Lakes in the ASTER Surface Temperature Product" Remote Sensing 13, no. 15: 2987. https://doi.org/10.3390/rs13152987

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