Export of Greenland Sea water across the Mohn Ridge induced by summer storms

Xusiyang Shen; Jinping Zhao; Xiaoyu Wang; Tore Hattermann; Wenqi Shi; Long Lin; Ping Chen

doi:10.1007/s13131-021-1964-2

Volume 42 Issue 2

Feb. 2023

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Xusiyang Shen, Jinping Zhao, Xiaoyu Wang, Tore Hattermann, Wenqi Shi, Long Lin, Ping Chen. Export of Greenland Sea water across the Mohn Ridge induced by summer storms[J]. Acta Oceanologica Sinica, 2023, 42(2): 17-28. doi: 10.1007/s13131-021-1964-2

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Xusiyang Shen, Jinping Zhao, Xiaoyu Wang, Tore Hattermann, Wenqi Shi, Long Lin, Ping Chen. Export of Greenland Sea water across the Mohn Ridge induced by summer storms[J]. Acta Oceanologica Sinica, 2023, 42(2): 17-28. doi: 10.1007/s13131-021-1964-2

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Export of Greenland Sea water across the Mohn Ridge induced by summer storms

doi: 10.1007/s13131-021-1964-2

1.
Physical Oceanography Laboratory, Ministry of Education, Qingdao 266100, China
2.
College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China
3.
Norwegian Polar Institute, Tromsø 9296, Norway
4.
National Marine Environmental Monitoring Center, Ministry of Ecology and Environment of the People’s Republic of China, Dalian 116023, China
5.
Key Laboratory of Polar Science, Ministry of Natural Resources, Shanghai 200129, China
6.
Institute of Oceanographic Instrumentation, Qilu University of Technology, Jinan 250306, China

Funds: The Major Scientific and Technological Innovation Projects of Shandong Province under contract No. 2018SDKJ0104-1; the National Natural Science Foundation of China under contract Nos 41941012 and 41976022.

More Information

Corresponding author: E-mail: jpzhao@ouc.edu.cn
Received Date: 2021-03-02
Accepted Date: 2021-11-21

Available Online: 2022-08-08

Publish Date: 2023-02-25

Abstract

Abstract

The Mohn Ridge separates the Greenland Sea and the Lofoten Basin. Previous studies identified the export across the Mohn Ridge (EMR) from the Greenland Basin into the Lofoten Basin using water mass analysis and the tracer diffusion method, but there is still lack of direct current measurements. A surface mooring with four current meters was deployed on the Mohn Ridge from June 5 to June 18 in 2015, when three cyclones passed in the adjacent area. In the absence of cyclones, the flow on the Mohn Ridge was northeastward, parallel to the ridge. When cyclones appeared, the EMR occurred to transport Greenland Sea water into the Lofoten Basin. The probable mechanism is the sea level height variation caused by the perturbation of the low pressure of cyclones, which yields an outward pressure gradient force to drive the outflow. Our results suggest that the outflow is intermittent and only happens during cyclone activities. The annual mean volume flux of EMR was roughly estimated by the limited data, which is about 3.8×10⁶ m³/s, a little bit smaller than the estimation based on volume conservation. The results indicate that the contribution of the cyclonic storms to EMR is a greatly important mechanism that potentially influences the global thermohaline circulation through the Greenland-Scotland Ridge overflow.
- Mohn Ridge,
- current measurement,
- cyclone

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References(37)

References

Aagaard K, Greisman P. 1975. Toward new mass and heat budgets for the Arctic Ocean. Journal of Geophysical Research, 80(27): 3821–3827. doi: 10.1029/JC080i027p03821

Beszczynska-Möller A, Woodgate R A, Lee C M, et al. 2011. A synthesis of exchanges through the main oceanic gateways to the Arctic Ocean. Oceanography, 24(3): 82–99. doi: 10.5670/oceanog.2011.59

Blindheim J. 1990. Arctic intermediate water in the Norwegian Sea. Deep-Sea Research Part A. Oceanographic Research Papers, 37(9): 1475–1489

Blindheim J, Ådlandsvik B. 1995. Episodic formation of intermediate water along the Greenland Sea Arctic Front. ICES Journal of Marine Science, 6: 1–11

Blindheim J, Rey F. 2004. Water-mass formation and distribution in the Nordic seas during the 1990s. ICES Journal of Marine Science, 61(5): 846–863. doi: 10.1016/j.icesjms.2004.05.003

Bosse A, Fer I. 2019. Mean structure and seasonality of the Norwegian Atlantic front current along the Mohn Ridge from repeated glider transects. Geophysical Research Letters, 46(22): 13170–13179. doi: 10.1029/2019GL084723

Budéus G, Ronski S. 2009. An integral view of the hydrographic development in the Greenland Sea over a decade. The Open Oceanography Journal, 3: 8–39. doi: 10.2174/1874252100903010008

Codiga D L. 2011. Uniﬁed Tidal Analysis and Prediction Using the UTide Matlab Functions. Narragansett: Graduate School of Oceanography, University of Rhode Island

De Steur L, Hansen E, Mauritzen C, et al. 2014. Impact of recirculation on the East Greenland Current in Fram Strait: results from moored current meter measurements between 1997 and 2009. Deep-Sea Research Part I: Oceanographic Research Papers, 92: 26–40. doi: 10.1016/j.dsr.2014.05.018

Fahrbach E, Meincke J, Østerhus S, et al. 2001. Direct measurements of volume transports through Fram Strait. Polar Research, 20(2): 217–224. doi: 10.1111/j.1751-8369.2001.tb00059.x

Fieg K, Gerdes R, Fahrbach E, et al. 2010. Simulation of oceanic volume transports through Fram Strait 1995–2005. Ocean Dynamics, 60(3): 491–502. doi: 10.1007/s10236-010-0263-9

García-Ibáñez M I, Pérez F F, Lherminier P, et al. 2018. Water mass distributions and transports for the 2014 GEOVIDE cruise in the North Atlantic. Biogeosciences, 15(7): 2075–2090. doi: 10.5194/bg-15-2075-2018

Hansen B, Østerhus S. 2000. North Atlantic–Nordic seas exchanges. Progress in Oceanography, 45(2): 109–208. doi: 10.1016/S0079-6611(99)00052-X

Harden B E, Pickart R S, Valdimarsson H, et al. 2016. Upstream sources of the Denmark Strait Overflow: Observations from a high-resolution mooring array. Deep-Sea Research Part I: Oceanographic Research Papers, 112: 94–112. doi: 10.1016/j.dsr.2016.02.007

Håvik L, Pickart R S, Våge K, et al. 2017. Evolution of the east Greenland Current from Fram Strait to Denmark Strait: synoptic measurements from summer 2012. Journal of Geophysical Research: Oceans, 122(3): 1974–1994. doi: 10.1002/2016JC012228

Hermann F. 1967. The T-S diagram analysis of the water masses over the Iceland-Faroe ridge and in the Faroe bank channel (Overflow 60). Rapports et Procès-Verbaux des Réunions du Conseil International pour l’Exploration de la Mer, 157: 139–149

Hersbach H, Bell B, Berrisford P, et al. 2018. ERA5 hourly data on single levels from 1959 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview[2021-3-1]

Jeansson E, Olsen A, Jutterström S. 2017. Arctic intermediate water in the Nordic seas, 1991–2009. Deep-Sea Research Part I: Oceanographic Research Papers, 128: 82–97. doi: 10.1016/j.dsr.2017.08.013

Jochumsen K, Quadfasel D, Valdimarsson H, et al. 2012. Variability of the Denmark strait overflow: moored time series from 1996–2011. Journal of Geophysical Research: Oceans, 117(C12): C12003

Karspeck A R, Stammer D, Köhl A, et al. 2017. Comparison of the Atlantic meridional overturning circulation between 1960 and 2007 in six ocean reanalysis products. Climate Dynamics, 49(3): 957–982. doi: 10.1007/s00382-015-2787-7

Köhl A. 2010. Variable source regions of Denmark Strait and Faroe Bank Channel overflow waters. Tellus A: Dynamic Meteorology and Oceanography, 62(4): 551–568. doi: 10.1111/j.1600-0870.2010.00454.x

Marnela M, Rudels B, Houssais M N, et al. 2013. Recirculation in the Fram Strait and transports of water in and north of the Fram Strait derived from CTD data. Ocean Science, 9(3): 499–519. doi: 10.5194/os-9-499-2013

Olsen S M, Shaffer G, Bjerrum C J. 2005. Ocean oxygen isotope constraints on mechanisms for millennial-scale climate variability. Paleoceanography and Paleoclimatology, 2005,20(1): PA1014

Østerhus S, Gammelsrød T. 1999. The abyss of the Nordic seas is warming. Journal of Climate, 12(11): 3297–3304. doi: 10.1175/1520-0442(1999)012<3297:TAOTNS>2.0.CO;2

Østerhus S, Woodgate R, Valdimarsson H, et al. 2019. Arctic Mediterranean exchanges: a consistent volume budget and trends in transports from two decades of observations. Ocean Science, 15(2): 379–399. doi: 10.5194/os-15-379-2019

Quadfasel D, Käse R. 2007. Present-day manifestation of the Nordic seas overflows. In: Schmittner A, Chiang J C H, Hemming S R, eds. Ocean Circulation: Mechanisms and Impacts-Past and Future Changes of Meridional Overturning. Washington, DC: American Geophysical Union (AGU), 75–89

Rudels B, Fahrbach E, Meincke J, et al. 2002. The east Greenland Current and its contribution to the Denmark Strait overflow. ICES Journal of Marine Science, 59(6): 1133–1154. doi: 10.1006/jmsc.2002.1284

Sælen O H. 1990. On the exchange of bottom water between the Greenland and Norwegian seas. Geophysica, 3: 133–144

Schauer U, Fahrbach E, Osterhus S, et al. 2004. Arctic warming through the Fram Strait: oceanic heat transport from 3 years of measurements. Journal of Geophysical Research: Oceans, 109(C6): C06026

Serreze M C, Carse F, Barry R G, et al. 1997. Icelandic low cyclone activity: Climatological features, linkages with the NAO, and relationships with recent changes in the Northern Hemisphere circulation. Journal of Climate, 10(3): 453–464

Shao Qiuli, Zhao Jinping, Drinkwater K F, et al. 2019. Internal overflow in the Nordic seas and the cold reservoir in the northern Norwegian Basin. Deep-Sea Research Part I: Oceanographic Research Papers, 148: 67–79. doi: 10.1016/j.dsr.2019.04.012

Smethie Jr W M, Chipman D W, Swift J H, et al. 1988. Chlorofluoromethanes in the Arctic mediterranean seas: evidence for formation of bottom water in the Eurasian Basin and deep-water exchange through Fram Strait. Deep-Sea Research Part A. Oceanographic Research Papers, 35(3): 347–369

Stone M D. 1996. The Jan Mayen Current from 1989 and 1990 summer data [dissertation]. Monterey : Naval Postgraduate School

Swift J H, Koltermann K P. 1988. The origin of Norwegian Sea deep water. Journal of Geophysical Research: Oceans, 93(C4): 3563–3569. doi: 10.1029/JC093iC04p03563

Voet G, Quadfasel D, Mork K A, et al. 2010. The mid-depth circulation of the Nordic seas derived from profiling float observations. Tellus A: Dynamic Meteorology and Oceanography, 62(4): 516–529. doi: 10.1111/j.1600-0870.2010.00444.x

Woodgate R A, Fahrbach E, Rohardt G. 1999. Structure and transports of the East Greenland Current at 75°N from moored current meters. Journal of Geophysical Research: Oceans, 104(C8): 18059–18072. doi: 10.1029/1999JC900146

Ypma S L, Georgiou S, Dugstad J S, et al. 2020. Pathways and water mass transformation along and across the Mohn-Knipovich Ridge in the Nordic seas. Journal of Geophysical Research: Oceans, 125(9): e2020JC016075

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