An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River. / Willcox, E. W.; Bendtsen, J.; Mortensen, J.; Mohn, C.; Lemes, M.; Pedersen, T. J.; Holding, J.; Møller, E. F.; Sejr, M. K.; Seidenkrantz, M.-S.; Rysgaard, S.
In: Journal of Geophysical Research: Oceans, Vol. 128, No. 4, e2022JC019052, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River
AU - Willcox, E. W.
AU - Bendtsen, J.
AU - Mortensen, J.
AU - Mohn, C.
AU - Lemes, M.
AU - Pedersen, T. J.
AU - Holding, J.
AU - Møller, E. F.
AU - Sejr, M. K.
AU - Seidenkrantz, M.-S.
AU - Rysgaard, S.
N1 - Publisher Copyright: © 2023 The Authors.
PY - 2023
Y1 - 2023
N2 - The Northeast Greenland shelf is a broad Arctic shelf located between Greenland and Fram Strait. It is the principal gateway for sea ice export and sea ice-associated freshwater from the Arctic Ocean. Sea ice thickness has decreased by 15% per decade since the early 1990s and meteoric freshwater discharge has increased. The consequence of changing sea-ice and freshwater conditions in the region on ocean dynamics and the biological system remains unknown. Determining the source(s) of freshwater is important to be able to understand how the area will react to future upstream change. Here we present a synoptic survey of the Northeast Greenland shelf and slope with observations of hydrography, the nutrients nitrate, phosphate and silicate, and conservative tracers δ18O, δ2H, and total alkalinity during late summer 2017. We compare these to previously published values, including those which identify Pacific and Atlantic water, the Siberian shelf seas, and the six largest Arctic rivers. We show that a major source of freshwater on the Northeast Greenland shelf during late summer 2017 is the Laptev Sea and find no conclusive evidence of Pacific Water. Our observations indicate a direct link between Northeast Greenland hydrology and processes occurring on Eurasian shelves.
AB - The Northeast Greenland shelf is a broad Arctic shelf located between Greenland and Fram Strait. It is the principal gateway for sea ice export and sea ice-associated freshwater from the Arctic Ocean. Sea ice thickness has decreased by 15% per decade since the early 1990s and meteoric freshwater discharge has increased. The consequence of changing sea-ice and freshwater conditions in the region on ocean dynamics and the biological system remains unknown. Determining the source(s) of freshwater is important to be able to understand how the area will react to future upstream change. Here we present a synoptic survey of the Northeast Greenland shelf and slope with observations of hydrography, the nutrients nitrate, phosphate and silicate, and conservative tracers δ18O, δ2H, and total alkalinity during late summer 2017. We compare these to previously published values, including those which identify Pacific and Atlantic water, the Siberian shelf seas, and the six largest Arctic rivers. We show that a major source of freshwater on the Northeast Greenland shelf during late summer 2017 is the Laptev Sea and find no conclusive evidence of Pacific Water. Our observations indicate a direct link between Northeast Greenland hydrology and processes occurring on Eurasian shelves.
KW - Arctic ocean
KW - Greenland
KW - Northeast Greenland
KW - shelf
KW - Transpolar drift
KW - water masses
U2 - 10.1029/2022JC019052
DO - 10.1029/2022JC019052
M3 - Journal article
AN - SCOPUS:85153847747
VL - 128
JO - Journal of Geophysical Research: Solid Earth
JF - Journal of Geophysical Research: Solid Earth
SN - 0148-0227
IS - 4
M1 - e2022JC019052
ER -
ID: 346448249