Temporal and spatial variabilities in surface mass balance at the EGRIP site, Greenland from 2009 to 2017
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Temporal and spatial variabilities in surface mass balance at the EGRIP site, Greenland from 2009 to 2017. / Komuro, Yuki; Nakazawa, Fumio; Hirabayashi, Motohiro; Goto-Azuma, Kumiko; Nagatsuka, Naoko; Shigeyama, Wataru; Matoba, Sumito; Homma, Tomoyuki; Steffensen, Jorgen Peder; Dahl-Jensen, Dorthe.
In: Polar Science, Vol. 27, 100568, 03.2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Temporal and spatial variabilities in surface mass balance at the EGRIP site, Greenland from 2009 to 2017
AU - Komuro, Yuki
AU - Nakazawa, Fumio
AU - Hirabayashi, Motohiro
AU - Goto-Azuma, Kumiko
AU - Nagatsuka, Naoko
AU - Shigeyama, Wataru
AU - Matoba, Sumito
AU - Homma, Tomoyuki
AU - Steffensen, Jorgen Peder
AU - Dahl-Jensen, Dorthe
PY - 2021/3
Y1 - 2021/3
N2 - Temporal variability in surface mass balance (SMB) on the Greenland ice sheet is important for understanding the mass balance of the ice sheet. Additionally, knowledge of the spatial variability in SMB at ice core drilling sites helps to interpret the spatial representativeness of SMB data obtained from a single ice core. In this study, to investigate the spatiotemporal variability in recent SMB in the East Greenland Ice Core Project (EGRIP) area in the northeastern Greenland ice sheet, pit observations were made at six sites in the summers of 2016?2018. In all pits, depth profiles of water isotope ratios showed clear seasonal variations. The annual SMB differed from site to site, which is probably due to post-depositional redistribution of snow caused by wind erosion and snowdrift. However, the multiple-site averages of annual SMBs, which ranged from 134 to 157 mm w. e. yr-1 (average 146 mm w. e. yr? 1) during 2009?2017, were very similar. This indicates that annual SMBs in the EGRIP area were nearly constant in this period. The seasonal SMBs in the EGRIP area tended to be larger in the summer?winter period than in the winter?summer period.
AB - Temporal variability in surface mass balance (SMB) on the Greenland ice sheet is important for understanding the mass balance of the ice sheet. Additionally, knowledge of the spatial variability in SMB at ice core drilling sites helps to interpret the spatial representativeness of SMB data obtained from a single ice core. In this study, to investigate the spatiotemporal variability in recent SMB in the East Greenland Ice Core Project (EGRIP) area in the northeastern Greenland ice sheet, pit observations were made at six sites in the summers of 2016?2018. In all pits, depth profiles of water isotope ratios showed clear seasonal variations. The annual SMB differed from site to site, which is probably due to post-depositional redistribution of snow caused by wind erosion and snowdrift. However, the multiple-site averages of annual SMBs, which ranged from 134 to 157 mm w. e. yr-1 (average 146 mm w. e. yr? 1) during 2009?2017, were very similar. This indicates that annual SMBs in the EGRIP area were nearly constant in this period. The seasonal SMBs in the EGRIP area tended to be larger in the summer?winter period than in the winter?summer period.
KW - Greenland
KW - Surface mass balance
KW - Seasonality
KW - Spatial variability
KW - EGRIP
KW - NITRATE FIRN CONCENTRATIONS
KW - ICE-SHEET
KW - ARCTIC PRECIPITATION
KW - SEASONAL-VARIATIONS
KW - SEA-ICE
KW - SNOW
KW - ACCUMULATION
KW - CHEMISTRY
KW - SULFATE
KW - RECORDS
U2 - 10.1016/j.polar.2020.100568
DO - 10.1016/j.polar.2020.100568
M3 - Journal article
VL - 27
JO - Polar Science
JF - Polar Science
SN - 1873-9652
M1 - 100568
ER -
ID: 269907649