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Large Variability of Dissolved Inorganic Radiocarbon in the Kuroshio Extension of the Northwest North Pacific

Published online by Cambridge University Press:  08 January 2018

Ling Ding ,
Tiantian Ge ,
Huiwang Gao ,
Chunle Luo ,
Yuejun Xue ,
Ellen R M Druffel  and
Xuchen Wang
Ling Ding
Affiliation:
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Tiantian Ge
Affiliation:
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Huiwang Gao
Affiliation:
Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Chunle Luo
Affiliation:
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Yuejun Xue
Affiliation:
Ocean Science Isotope and Geochronology Center, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
Ellen R M Druffel
Affiliation:
Department of Earth System Science, University of California, Irvine, CA 92697-3100, USA
Xuchen Wang*
Affiliation:
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China Ocean Science Isotope and Geochronology Center, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
*
*Corresponding author. Email: [email protected].
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Abstract

Radiocarbon (14C) in dissolved inorganic carbon (DIC) was measured for water samples collected from six deep stations in the Kuroshio Extension (KE) region in the northwestern North Pacific in April–May 2015. Vertical profiles of Δ14C-DIC indicate that bomb-produced 14C was present from the surface to ~1500 m water depth. Large variations in Δ14C-DIC values (300‰) were observed at 500 m water depth among the stations and the differences were likely controlled by transport and mixing dynamics of different water masses in the region. The major Pacific western boundary currents, such as Kuroshio and Oyashio and regional mesoscale eddies, could play important roles affecting the observed Δ14C-DIC variability. The depth profiles of both Δ14C-DIC and DIC concentrations can be predicted by the solution mixing model and can be used as conservative tracers of water mass movement and water parcel homogenization in the ocean.

Keywords

dissolved inorganic carbonKuroshio ExtensionNorth Pacific Intermediate Waternorthwest North Pacificradiocarbon
Type
Research Article
Information
Radiocarbon , Volume 60 , Issue 2 , April 2018 , pp. 691 - 704
Copyright
© 2018 by the Arizona Board of Regents on behalf of the University of Arizona 

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References

REFERENCES

Beaupré, SR, Aluwihare, L. 2010. Constraining the 2-component model of marine dissolved organic radiocarbon. Deep-Sea Research II 57(16):1494–1503.CrossRefGoogle Scholar
Broecker, WS, Peng, TH, Ostlund, GH, Stuiver, M. 1985. The distribution of bomb radiocarbon in the ocean. Journal of Geophysical Research 90(C4):6953–6970.Google Scholar
Broecker, WS, Spencer, DW, Craig, H. 1982. GEOSECS Pacific Expedition, Volume 3. Hydrographic Data 1973–1974. Washington, DC: U.S. Government Printing Office. p 137.Google Scholar
Broecker, WS, Sutherland, S, Smethie, W, Peng, TH, Ostlund, G. 1995. Oceanic radiocarbon: separation of the natural and bomb components. Global Biogeochemical Cycles 9(2):263–288.Google Scholar
Ding, L, Ge, TT, Gao, HW, Zhang, J, Wang, XC. 2017. Dissolved organic carbon and total nitrogen in the East China Sea and the Kuroshio Extension of the northwest North Pacific. Marine Chemistry (in review).Google Scholar
Druffel, ERM. 1987. Bomb radiocarbon in the Pacific: annual and seasonal timescale variations. Journal of Marine Research 45(3):667–698.Google Scholar
Druffel, ERM, Bauer, JE, Griffin, S, Beaupré, SR, Hwang, J. 2008. Dissolved inorganic radiocarbon in the North Pacific Ocean and Sargasso Sea. Deep-Sea . Research I 55(4):451–459.Google Scholar
Ge, TT, Wang, XC, Zhang, J, Luo, CL, Xue, YJ. 2016. Dissolved inorganic radiocarbon in the northwest Pacific continental margin. Radiocarbon 58(3):517–529.Google Scholar
Gruber, N. 2011. Warming up, turning sour, losing breath: ocean biogeochemistry under global change. Philosophical Transactions of the Royal Society A 369(1943):1980–1996.Google Scholar
Hua, Q, Barbetti, B, Rakowski, AZ. 2013. Atmospheric radiocarbon for the period 1950–2010. Radiocarbon 55(4):2059–2072.Google Scholar
Hu, DX, Wu, LX, Cai, WJ, Gupta, AS, Ganachaud, A, Qiu, B, Gordon, AL, Lin, X, Chen, Z, Hu, S, Wang, G, Wang, Q, Sprintall, J, Qu, T, Kashino, Y, Wang, F, Kessler, WS. 2015. Pacific western boundary currents and their roles in climate. Nature 522(7556):299–308.CrossRefGoogle ScholarPubMed
Key, RM. 1996. WOCE Pacific Ocean radiocarbon program. Radiocarbon 38(3):415–423.CrossRefGoogle Scholar
Key, RM, Quay, PD, Jones, GA, McNichol, AP, Reden, KF, Schneider, RJ. 1996. WOCE AMS radiocarbon I: Pacific Ocean Results (P6, P16 and P17). Radiocarbon 38(3):425–518.Google Scholar
Kumamoto, Y, Murata, A, Kawano, T, Watanabe, S, Fukasawa, M. 2013. Decadal changes in bomb–produced radiocarbon in the Pacific Ocean from the 1990s to 2000s. Radiocarbon 55(2–3):1641–1650.Google Scholar
Levin, I, Hesshaimer, V. 2000. Radiocarbon - A unique tracer of global carbon cycle dynamics. Radiocarbon 42(1):69–80.CrossRefGoogle Scholar
Ma, XH, Zhao, J, Chang, P, Liu, X, Montuoro, R, Small, RJ, bryan, FO, Greatbatch, RJ, Brandt, P, Wu, D, Lin, X, Wu, L. 2016. Western boundary currents regulated by interaction between ocean eddies and the atmosphere. Nature 535(7613):533–537.Google Scholar
McNichol, AP, Jones, GA. 1991. Measuring 14C in seawater ∑CO2 by accelerator mass spectrometry, WHP operations and methods. In: Joyce T, Corry C, Stalcup M, editors. WOCE Operations Manual. Part 3.1.2, Requirements for WHP Data Reporting. Woods Hole, Massachusetts: WHPO Publication 90–1. p 71.Google Scholar
McNichol, AP, Jones, GA, Hutton, DL, Gagnon, AR. 1994. The rapid preparation of seawater ∑CO2 for radiocarbon analysis at the national ocean sciences AMS facility. Radiocarbon 36(2):237–246.Google Scholar
McNichol, AP, Schneider, RJ, von Reden, KF, Gagnon, AR., Elder, KL, NOSAMS, Key, RM, Quay, PD. 2000. Ten years after–The WOCE AMS Radiocarbon Program. Instruments and Methods in Physics . Research B 172(1–4):479–484.Google Scholar
Qiu, B, Chen, S. 2011. Effect of decadal Kuroshio Extension jet and eddy variability on the modification of North Pacific Intermediate Water. Journal of Physical Oceanography 41(3):503–515.CrossRefGoogle Scholar
Östlund, HG, Stuiver, M. 1980. GEOSECS Pacific radiocarbon. Radiocarbon 22(1):25–53.Google Scholar
Rocha, CB, Gille, ST, Chereskin, TK, Menemenlis, D. 2016. Seasonality of submesoscale dynamics in the Kuroshio Extension. Geophysical Research Letters 43(21):11, 304–311.Google Scholar
Sarnthein, M, Schneider, B, Grootes, PM. 2013. Peak glacial 14C ventilation ages suggest major draw-down of carbon into the abyssal ocean. Climate of the Past 9(6):2595–2614.Google Scholar
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–363.Google Scholar
Stuiver, M, Quay, PD, Östlund, HG. 1983. Abyssal water 14C distribution and the age of the world oceans. Science 219(4586):849–851.CrossRefGoogle Scholar
Stuiver, M, Östlund, HG. 1980. GEOSECS Atlantic radiocarbon. Radiocarbon 22(1):1–24.Google Scholar
Stuiver, M, Östlund, G, Key, RM, Reimer, PJ. 1996. Large volume WOCE radiocarbon sampling in the Pacific Ocean. Radiocarbon 38(3):519–561.Google Scholar
Takatani, T, Sasano, D, Nakano, T, Midorikawa, T, Ishii, M. 2012. Decrease of dissolved oxygen after the mid-1980s in the western North Pacific subtropical gyre along the 137ºE repeat section. Global Biogeochemical Cycle 26(2):GB2013.Google Scholar
Talley, LD. 1993. Distribution and formation of North Pacific Intermediate Water. Journal of Physical Oceanography 23:517–537.2.0.CO;2>CrossRefGoogle Scholar
Talley, LD, Nagata, Y, Fujimura, M, Iwao, T, Kono, T, Inagake, D, Hirai, M, Okuda, K. 1995. North Pacific Intermediate Water in the Kuroshio/Oyashio mixed water region. Journal of Physical Oceanography 25(4):475–501.Google Scholar
Talley, LD. 1997. North Pacific Intermediate Water transports in the mixed water region. Journal of Physical Oceanography 27(8):1795–1803.2.0.CO;2>CrossRefGoogle Scholar
Tokieda, T, Watanabe, S, Tsunogai, S. 1996. Chlorofluorocarbons in the western North Pacific in 1993 and formation of North Pacific Intermediate Water. Journal of Oceanography 52(4):475–490.Google Scholar
Tsunogai, S. 2000. North Pacific water’s large potential sink capacity for absorbing anthropogenic CO2 and the processes recovering it. In: Handa N, Tanoue E, Hama T, editors. Dynamics and Characterization of Marine Organic Matter. Tokyo: Terrapub. p 533–560.CrossRefGoogle Scholar
Tsunogai, S, Ono, T, Watanabe, S. 1993. Increase in total carbonate in the western North Pacific water and a hypothesis on the missing sink of anthropogenic carbon. Journal of Oceanography 49(3):305–315.Google Scholar
Tsunogai, S, Watanbe, S, Honda, M, Aramaki, T. 1995. North Pacific Intermediate Water studied chiefly with radiocarbon. Journal of Oceanography 51(5):519–536.Google Scholar
Tsurushima, N, Nojiri, Y, Imai, K, Watanabe, S. 2002. Seasonal variations of carbon dioxide system and nutrients in the surface mixed layer at station KNOT (44ºN, 155ºE) in the subarctic western North Pacific. Deep-Sea Research II 49(24–25):5377–5394.Google Scholar
Wakita, M, Watanabe, S, Murata, A, Tsurushima, N, Handa, M. 2010. Decadal change of dissolved inorganic carbon in the subarctic western North Pacific Ocean. Tellus B 62(5):608–620.Google Scholar
Waterman, S, Hogg, NG, Jayne, SR. 2011. Eddy-mean flow interaction in the Kuroshio Extension region. Journal of Physical Oceanography 41(6):1182–1208.Google Scholar
Winn, CD, Li, YH, Mackenzie, FT, Karl, DM. 1998. Rising surface ocean dissolved inorganic carbon at the Hawaii Ocean Time-series site. Marine Chemistry 60(1–2):33–47.Google Scholar
Wu, LX, Cai, WJ, Zhang, LP, Nakamura, H, Timmermann, A, Joyce, T, McPhaden, MJ, Alexander, M, Qiu, B, Visbeck, M, Chang, P, Giese, B. 2012. Enhanced warming over the global subtropical western boundary current. Nature Climate Change 2(3):161–166.Google Scholar
Yasuda, I, Okuda, K, Shimizu, Y. 1996. Distribution and modification of North Pacific Intermediate Water in the Kuroshio-Oyashio interfrontal zone. Journal of Physical Oceanography 26(4):448–465.Google Scholar
Yasuda, I. 2004. North Pacific Intermediate Water: Progress in SAGE (SubArctic Gyre Experiment) and Related Projects. Journal of Oceanography 60(2):385–395.Google Scholar
Yasunaka, S, Nojiri, Y, Nakaoka, SI, Ono, T, Mukai, H, Usui, N. 2014. North Pacific dissolved inorganic carbon variations related to the Pacific decadal Oscillation. Geophysical Research Letters 41(3):1005–1011.CrossRefGoogle Scholar