Cite this paper:
ZHANG Cunjie, LIN Xiaopei. Contributions of the Bering Strait throughflow to oceanic meridional heat transport under modern and Last Glacial Maximum climate conditions[J]. HaiyangYuHuZhao, 2019, 37(2): 398-409

Contributions of the Bering Strait throughflow to oceanic meridional heat transport under modern and Last Glacial Maximum climate conditions

ZHANG Cunjie, LIN Xiaopei
Physical Oceanography Laboratory/CIMST, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China
Abstract:
Paleo reconstructions and model simulations have suggested the Bering Strait plays a pivotal role in climate change. However, the contribution of the Bering Strait throughflow to oceanic meridional heat transport (OMHT) is about 100 times smaller than the OMHT at low latitudes in the modern climate and it is generally ignored. Based on model simulations under modern and Last Glacial Maximum (LGM,~21 ka; ka=thousand years ago) climate conditions, this study highlights the importance of the Bering Strait throughflow to OMHT. The interbasin OMHT induced by the Bering Strait throughflow is estimated by interbasin-intrabasin decomposition. Similar to barotropic-baroclinic-horizontal decomposition, we assume the nonzero net mass transport induced by interbasin throughflows is uniform across the entire section, and the interbasin term is separated to force zero net mass transport for the intrabasin term. Based on interbasinintrabasin decomposition, the contribution of the Bering Strait throughflow is determined as~0.02 PW (1 PW=1015 W) under the modern climate, and zero under the LGM climate because the closed Bering Strait blocked interbasin throughflows. The contribution of the Bering Strait throughflow to OMHT is rather small, consistent with previous studies. However, comparisons of OMHT under modern and LGM climate conditions indicate the mean absolute changes are typically 0.05 and 0.20 PW in the North Atlantic and North Pacific, respectively. Thus, the contribution of the Bering Strait throughflow should not be ignored when comparing OMHT under different climate conditions.
Key words:    oceanic meridional heat transport (OMHT)|Bering Strait throughflow|Last Glacial Maximum (LGM)   
Received: 2018-03-20   Revised: 2018-05-02
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Articles by LIN Xiaopei
References:
Bard E. 2002. Climate shock:abrupt changes over millennial time scales. Physics Today, 55(12):32-38.
Batchelor G K. 1967. An Introduction to Fluid Dynamics.Cambridge University Press, Cambridge, Britain. 658p.
Briegleb B P, Bitz C M, Hunke E C, Lipscomb W H, Holland M, Schramm J L, Moritz R E. 2004. Scientific Description of the Sea Ice Component in the Community Climate System Model, Version Three. Climate Andglobal Dynamics Division, Jhr National Center for Atmospheric Research, Boulder, Colorado, USA.
Bryan K. 1962. Measurements of meridional heat transport by ocean currents. Journal of Geophysical Research, 67(9):3 403-3 414.
Bryden H L, Imawaki S. 2001. Ocean heat transport.International Geophysics, 77:455-474.
Collins W D, Bitz C M, Blackmon M L, Bonan G B, Bretherton C S, Carton J A, Chang P, Doney S C, Hack J J, Henderson T B, Kiehl J T, Large W G, McKenna D S, Santer B D, Smith R D. 2006. The community climate system model version 3 (CCSM3). Journal of Climate, 19(11):2 122-2 143.
Czaja A, Marshall J. 2006. The partitioning of poleward heat transport between the atmosphere and ocean. Journal of the Atmospheric Sciences, 63(5):1 498-1 511.
Dickinson R E, Oleson K W, Bonan G, Hoffman F, Thornton P, Vertenstein M, Yang Z L, Zeng X B. 2006. The community land model and its climate statistics as a component of the community climate system model. Journal of Climate, 19(11):2 302-2 324.
Fasullo J T, Trenberth K E. 2008. The annual cycle of the energy budget. Part Ⅱ:meridional structures and poleward transports. Journal of Climate, 21(10):2 313-2 325.
Ferrari R, Ferreira D. 2011. What processes drive the ocean heat transport? Ocean Modelling, 38(3-4):171-186.
Freeman E, Skinner L C, Tisserand A, Dokken T, Timmermann A, Menviel L, Friedrich T. 2015. An Atlantic-Pacific ventilation seesaw across the last deglaciation. Earth and Planetary Science Letters, 424:237-244.
Ganachaud A, Wunsch C. 2000. Improved estimates of global ocean circulation, heat transport and mixing from hydrographic data. Nature, 408(6811):453-457.
Gill A E. 1982. Atmosphere-Ocean Dynamics. Academic Press, New York, USA. 662p.
Gu D F, Philander S G H. 1997. Interdecadal climate fluctuations that depend on exchanges between the tropics and extratropics. Science, 275(5301):805-807.
Harington C R. 2005. The eastern limit of Beringia:mammoth remains from banks and Melville islands, northwest territories. Arctic Institute of North America, 58(4):361-369.
Hatzianastassiou N, Matsoukas C, Hatzidimitriou D, Pavlakis C, Drakakis M, Vardavas I. 2004. Ten year radiation budget of the earth:1984-93. International Journal of Climatology, 24(14):1 785-1 802.
Hazeleger W, Seager R, Cane M A, Naik N H. 2004. How can tropical Pacific Ocean heat transport vary? Journal of Physical Oceanography, 34(1):320-333.
Hu A X, Meehl G A, Han W Q, Abe-Ouchi A, Morrill C, Okazaki Y, Chikamoto M O. 2012a. The Pacific-Atlantic seesaw and the Bering Strait. Geophysical Research Letters, 39(3):L03702.
Hu A X, Meehl G A, Han W Q, Otto-Bliestner B, Abe-Ouchi A, Rosenbloom N. 2015. Effects of the Bering Strait closure on AMOC and global climate under different background climates. Progress in Oceanography, 132:174-196.
Hu A X, Meehl G A, Han W Q, Timmermann A, Otto-Bliesner B, Liu Z Y, Washington W M, Large W, Abe-Ouchi A, Kimoto M, Lambeck K, Wu B Y. 2012b. Role of the Bering Strait on the hysteresis of the ocean conveyor belt circulation and glacial climate stability. Proceedings of the National Academy of Sciences of the United States of America, 109(17):6 417-6 422.
Hu A X, Meehl G A, Han W Q, Yin J J. 2011. Effect of the potential melting of the Greenland Ice Sheet on the Meridional Overturning Circulation and global climate in the future. Deep Sea Research Part Ⅱ:Topical Studies in Oceanography, 58(17-18):1 914-1 926.
Hu A X, Meehl G A, Han W Q. 2007. Role of the Bering Strait in the thermohaline circulation and abrupt climate change.Geophysical Research Letters, 34(5):L05704.
Hu A X, Meehl G A. 2005. Bering Strait throughflow and the thermohaline circulation. Geophysical Research Letters, 32(24):L24610.
IOC, SCOR, IAPSO. 2010.The International Thermodynamic Equation of Seawater-2010:Calculation and Use of Thermodynamic Properties. Manuals and Guides No. 56, Intergovernmental Oceanographic Commission, Paris.p.196.
Lippold J, Luo Y M, Francois R, Allen S E, Gherardi J, Pichat S, Hickey B, Schulz H. 2012. Strength and geometry of the glacial Atlantic meridional overturning circulation.Nature Geoscience, 5(11):813-816.
Lynch-Stieglitz J, Adkins J F, Curry W B, Dokken T, Hall I R, Herguera J C, Hirschi J J M, Ivanova E V, Kissel C, Marchal O, Marchitto T M, McCave I N, McManus J F, Mulitza S, Ninnemann U, Peeters F, Yu E F, Zahn R. 2007. Atlantic meridional overturning circulation during the Last Glacial Maximum. Science, 316(5821):66-69.
MacDonald A M, Baringer M O. 2013. Ocean heat transport.International Geophysics, 103:759-785.
MARGO Project Members. 2009. Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum. Nature Geoscience, 2(2):127-132.
McCreary Jr J P, Lu P. 1994. Interaction between the subtropical and equatorial ocean circulations:the subtropical cell.Journal of Physical Oceanography, 24(2):466-497.
McDougall T J. 2003. Potential enthalpy:a conservative oceanic variable for evaluating heat content and heat fluxes. Journal of Physical Oceanography, 33(5):945-963.
Okumura Y M, Deser C, Hu A X, Timmermann A, Xie S P. 2009. North Pacific climate response to freshwater forcing in the subarctic North Atlantic:oceanic and atmospheric pathways. Journal of Climate, 22(6):1 424-1 445.
Olbers D, Willebrand J, Eden C. 2012. Ocean Dynamics.Springer, Berlin, Germany. 703p.
Otto-Bliesner B L, Brady E C, Clauzet G, Tomas R, Levis S, Kothavala Z. 2006. Last glacial maximum and Holocene climate in CCSM3. Journal of Climate, 19(11):2 526-2 544.
Otto-Bliesner B L, Brady E C. 2010.The sensitivity of the climate response to the magnitude and location of freshwater forcing:last glacial maximum experiments.Quaternary Science Reviews, 29(1-2):56-73.
Peltier W R. 2004. Global glacial isostasy and the surface of the ice-age earth:the ICE-5G (VM2) model and GRACE.Annual Review of Earth and Planetary Sciences, 32(1):111-149.
Pelto B M. 2014. Sedimentological, Geochemical and Isotopic Evidence for the Establishment of Modern Circulation Through the Bering Strait and Depositional Environment History of the Bering and Chukchi Seas During the Last Deglaciation. University of Massachusetts Amherst, Massachusetts, USA.Saenko O A, Schmittner A, Weaver A J. 2004. The atlantic-pacific seesaw. Journal of Climate, 17(11):2 33-2 38.
Sandal C, Nof D. 2008. The collapse of the Bering Strait ice dam and the abrupt temperature rise in the beginning of the holocene. Journal of Physical Oceanography, 38(9):1 979-1 991.
Saunders P M. 1995. The Bernoulli function and flux of energy in the ocean. Journal of Geophysical Research, 100(C11):22 647-22 648.
Serreze M C, Barrett A P, Slater A G, Woodgate R A, Aagaard K, Lammers R B, Steele M, Moritz R, Meredith M, Lee C M. 2006. The large-scale freshwater cycle of the Arctic.Journal of Geophysical Research, 111(C11):C11010.
Smith R, Gent P. 2002. Reference Manual for the Parallel Ocean Program (POP) Ocean Component of the Community Climate System Model (CCSM2.0 and 3.0).Technical Report LA-UR-02-2484, Los Alamos National Laboratory, Los Alamos, NM.
Sprintall J, Wijffels S E, Molcard R, Jaya I. 2009. Direct estimates of the Indonesian Throughflow entering the Indian Ocean:2004-2006. Journal of Geophysical Research, 114(C7):C07001.
Stammer D, Wunsch C, Giering R, Eckert C, Heimbach P, Marotzke J, Adcroft A, Hill C N, Marshall J. 2003. Volume, heat, and freshwater transports of the global ocean circulation 1993-2000, estimated from a general circulation model constrained by World Ocean Circulation Experiment (WOCE) data. Journal of Geophysical Research, 108(C1):3007. Starr V P. 1951. Applications of energy principles to the general circulation. In:Byers H R, Landsberg H E, Wexler H, Haurwitz B, Spilhaus A F, Willett H C, Houghton H G eds. Compendium of Meteorology. American Meteorological Society, Boston, USA. p.568-574.
Talley L D. 2003. Shallow, intermediate, and deep overturning components of the global heat budget. Journal of Physical Oceanography, 33(3):530-560.
Trenberth K E, Caron J M. 2001. Estimates of meridional atmosphere and ocean heat transports. Journal of Climate, 14(16):3 433-3 443.
Trenberth K E, Solomon A. 1994. The global heat balance:heat transports in the atmosphere and ocean. Climate Dynamics, 10(3):107-134.
Warren B A. 1999. Approximating the energy transport across oceanic sections. Journal of Geophysical Research, 104(C4):7 915-7 919.
Warren B A. 2006. The first law of thermodynamics in a salty ocean. Progress in Oceanography, 70(2-4):149-167.
Woodgate R A, Aagaard K, Weingartner T J. 2005. A year in the physical oceanography of the Chukchi Sea:moored measurements from autumn 1990-1991. Deep Sea Research Part Ⅱ:Topical Studies in Oceanography, 52(24-26):3 116-3 149.
Woodgate R A, Aagaard K. 2005. Revising the Bering Strait freshwater flux into the Arctic Ocean. Geophysical Research Letters, 32(2):L02602.
Woodgate R A, Weingartner T J, Lindsay R. 2012. Observed increases in Bering Strait oceanic fluxes from the Pacific to the Arctic from 2001 to 2011 and their impacts on the Arctic Ocean water column. Geophysical Research Letters, 39(24):L24603.
Woodgate R A, Weingartner T, Lindsay R. 2010.The 2007 Bering Strait oceanic heat flux and anomalous Arctic sea-ice retreat. Geophysical Research Letters, 37(1):L01602.
Yang H J, Li Q, Wang K, Sun Y, Sun D X. 2015a. Decomposing the meridional heat transport in the climate system.Climate Dynamics, 44(9-10):2 751-2 768.
Yang H J, Zhao Y Y, Liu Z Y, Li Q, He F, Zhang Q. 2015b. Heat transport compensation in atmosphere and ocean over the past 22,000 Years. Scientific Reports, 5:16 661.
Zheng Y X, Giese B S. 2009. Ocean heat transport in simple ocean data assimilation:structure and mechanisms.Journal of Geophysical Research, 114(C11):C11009.