TY - JOUR
T1 - Greenland ice sheet mass balance from 1840 through next week
AU - Mankoff, Kenneth D.
AU - Fettweis, Xavier
AU - Langen, Peter L.
AU - Stendel, Martin
AU - Kjeldsen, Kristian K.
AU - Karlsson, Nanna B.
AU - Noel, Brice
AU - van den Broeke, Michiel R.
AU - Solgaard, Anne
AU - Colgan, William
AU - Box, Jason E.
AU - Simonsen, Sebastian B.
AU - King, Michalea D.
AU - Ahlstrom, Andreas P.
AU - Andersen, Signe Bech
AU - Fausto, Robert S.
PY - 2021
Y1 - 2021
N2 - The mass of the Greenland ice sheet is declining as mass gain from snow
accumulation is exceeded by mass loss from surface meltwater runoff,
marine-terminating glacier calving and submarine melting, and basal
melting. Here we use the input–output (IO) method to estimate mass
change from 1840 through next week. Surface mass balance (SMB) gains and
losses come from
a semi-empirical SMB model from 1840 through 1985 and three regional
climate models (RCMs; HIRHAM/HARMONIE, Modèle Atmosphérique Régional –
MAR, and RACMO – Regional Atmospheric Climate MOdel) from 1986 through
next
week. Additional non-SMB losses come from a marine-terminating glacier
ice discharge product and a basal mass balance model. From these
products we
provide an annual estimate of Greenland ice sheet mass balance from 1840
through 1985 and a daily estimate at sector and region scale from 1986
through
next week. This product updates daily and is the first IO product to
include
the basal mass balance which is a source of an additional ∼24 Gt yr−1 of mass loss. Our results demonstrate an accelerating
ice-sheet-scale mass loss and general agreement (coefficient of determination,
r2, ranges from 0.62 to 0.94) among six other products, including
gravitational, volume, and other IO mass balance estimates. Results from this
study are available at https://doi.org/10.22008/FK2/OHI23Z (Mankoff et al., 2021).
AB - The mass of the Greenland ice sheet is declining as mass gain from snow
accumulation is exceeded by mass loss from surface meltwater runoff,
marine-terminating glacier calving and submarine melting, and basal
melting. Here we use the input–output (IO) method to estimate mass
change from 1840 through next week. Surface mass balance (SMB) gains and
losses come from
a semi-empirical SMB model from 1840 through 1985 and three regional
climate models (RCMs; HIRHAM/HARMONIE, Modèle Atmosphérique Régional –
MAR, and RACMO – Regional Atmospheric Climate MOdel) from 1986 through
next
week. Additional non-SMB losses come from a marine-terminating glacier
ice discharge product and a basal mass balance model. From these
products we
provide an annual estimate of Greenland ice sheet mass balance from 1840
through 1985 and a daily estimate at sector and region scale from 1986
through
next week. This product updates daily and is the first IO product to
include
the basal mass balance which is a source of an additional ∼24 Gt yr−1 of mass loss. Our results demonstrate an accelerating
ice-sheet-scale mass loss and general agreement (coefficient of determination,
r2, ranges from 0.62 to 0.94) among six other products, including
gravitational, volume, and other IO mass balance estimates. Results from this
study are available at https://doi.org/10.22008/FK2/OHI23Z (Mankoff et al., 2021).
U2 - 10.5194/essd-13-5001-2021
DO - 10.5194/essd-13-5001-2021
M3 - Journal article
VL - 13
SP - 5001
EP - 5025
JO - Earth System Science Data
JF - Earth System Science Data
SN - 1866-3508
IS - 10
ER -