TY - JOUR
T1 - Greenland-wide inventory of ice marginal lakes using a multi-method approach
AU - How, Penelope
AU - Messerli, Alexandra
AU - Mätzler, Eva
AU - Santoro, Maurizio
AU - Wiesmann, Andreas
AU - Caduff, Rafael
AU - Langley, Kirsty
AU - Bojesen, Mikkel Høegh
AU - Paul, Frank
AU - Kääb, Andreas
AU - Carrivick, Jonathan L.
N1 - Funding Information:
This work is funded by the ESA (4000109873/14/I-NB) Glaciers CCI (Climate Change Initiative) Phase 2, Option 6, titled ‘An Inventory of Ice-Marginal Lakes in Greenland’. We would like to thank Stephen Plummer for his technical feedback during the course of this work.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Ice marginal lakes are a dynamic component of terrestrial meltwater storage at the margin of the Greenland Ice Sheet. Despite their significance to the sea level budget, local flood hazards and bigeochemical fluxes, there is a lack of Greenland-wide research into ice marginal lakes. Here, a detailed multi-sensor inventory of Greenland’s ice marginal lakes is presented based on three well-established detection methods to form a unified remote sensing approach. The inventory consists of 3347 (± 8 %) ice marginal lakes (>0.05km2) detected for the year 2017. The greatest proportion of lakes lie around Greenland’s ice caps and mountain glaciers, and the southwest margin of the ice sheet. Through comparison to previous studies, a ∼ 75 % increase in lake frequency is evident over the west margin of the ice sheet since 1985. This suggests it is becoming increasingly important to include ice marginal lakes in future sea level projections, where these lakes will form a dynamic storage of meltwater that can influence outlet glacier dynamics. Comparison to existing global glacial lake inventories demonstrate that up to 56% of ice marginal lakes could be unaccounted for in global estimates of ice marginal lake change, likely due to the reliance on a single lake detection method.
AB - Ice marginal lakes are a dynamic component of terrestrial meltwater storage at the margin of the Greenland Ice Sheet. Despite their significance to the sea level budget, local flood hazards and bigeochemical fluxes, there is a lack of Greenland-wide research into ice marginal lakes. Here, a detailed multi-sensor inventory of Greenland’s ice marginal lakes is presented based on three well-established detection methods to form a unified remote sensing approach. The inventory consists of 3347 (± 8 %) ice marginal lakes (>0.05km2) detected for the year 2017. The greatest proportion of lakes lie around Greenland’s ice caps and mountain glaciers, and the southwest margin of the ice sheet. Through comparison to previous studies, a ∼ 75 % increase in lake frequency is evident over the west margin of the ice sheet since 1985. This suggests it is becoming increasingly important to include ice marginal lakes in future sea level projections, where these lakes will form a dynamic storage of meltwater that can influence outlet glacier dynamics. Comparison to existing global glacial lake inventories demonstrate that up to 56% of ice marginal lakes could be unaccounted for in global estimates of ice marginal lake change, likely due to the reliance on a single lake detection method.
UR - http://www.scopus.com/inward/record.url?scp=85101562473&partnerID=8YFLogxK
U2 - 10.1038/s41598-021-83509-1
DO - 10.1038/s41598-021-83509-1
M3 - Article
C2 - 33627684
AN - SCOPUS:85101562473
SN - 2045-2322
VL - 11
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 4481
ER -
