Comment on “Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream” by Smith-Johnsen et al. (2020)
Bons, Paul D., de Riese, Tamara, Franke, Steven 
ORCID: https://orcid.org/0000-0001-8462-4379, Llorens, Maria-Gema, Sachau, Till, Stoll, Nicolas ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, Ilka ORCID: https://orcid.org/0000-0002-3023-6036, Westhoff, Julien and Zhang, Yu
;
ORCID: https://orcid.org/0000-0001-8462-4379, Llorens, Maria-Gema, Sachau, Till, Stoll, Nicolas ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, Ilka ORCID: https://orcid.org/0000-0002-3023-6036, Westhoff, Julien and Zhang, Yu
;
Contact
Ilka.Weikusat [ at ] awi.de
Abstract
Smith-Johnsen et al. (The Cryosphere, 14, 841–854, https://doi.org/10.5194/tc-14-841-2020, 2020) model the effect of a potential hotspot on the Northeast Greenland Ice Stream (NEGIS). They argue that a heat flux of at least 970 mW m−2 is required to have initiated or to control NEGIS. Such an exceptionally high heat flux would be unique in the world and is incompatible with known geological processes that can raise the heat flux. Fast flow at NEGIS must thus be possible without the extraordinary melt rates invoked in Smith-Johnsen et al. (2020).
Item Type
Article
Authors
Bons, Paul D., de Riese, Tamara, Franke, Steven ORCID: https://orcid.org/0000-0001-8462-4379, Llorens, Maria-Gema, Sachau, Till, Stoll, Nicolas ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, Ilka ORCID: https://orcid.org/0000-0002-3023-6036, Westhoff, Julien and Zhang, Yu
;
ORCID: https://orcid.org/0000-0001-8462-4379, Llorens, Maria-Gema, Sachau, Till, Stoll, Nicolas ORCID: https://orcid.org/0000-0002-3219-8395, Weikusat, Ilka ORCID: https://orcid.org/0000-0002-3023-6036, Westhoff, Julien and Zhang, Yu
;
Divisions
AWI Organizations > Geosciences > Glaciology
AWI Organizations > Geosciences > (deprecated) Junior Research Group: Ice deformation mechanisms
AWI Organizations > Geosciences > (deprecated) Junior Research Group: Ice deformation mechanisms
Primary Division
Programs
Helmholtz Research Programs > CHANGING EARTH (2021-2027) > PT2:Ocean and Cryosphere in Climate > ST2.3: Sea Level Change
Primary Topic
Helmholtz Programs > Helmholtz Research Programs > CHANGING EARTH (2021-2027) > PT2:Ocean and Cryosphere in Climate > ST2.3: Sea Level Change
Publication Status
Published
Eprint ID
54096
DOI
10.5194/tc-15-2251-2021
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Cite as
Bons, P. D.
,
de Riese, T.
,
Franke, S.
,
Llorens, M. G.
,
Sachau, T.
,
Stoll, N.
,
Weikusat, I.
,
Westhoff, J.
and
Zhang, Y.
(2021):
Comment on “Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream” by Smith-Johnsen et al. (2020)
,
The Cryosphere,
15
,
pp. 2251-2254
.
doi: 10.5194/tc-15-2251-2021
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