Sea surface partial pressure of CO<sub>2</sub> and its controls in the northern South China Sea in the non-bloom period in spring

Zhai Weidong

doi:10.3969/j.issn.0253-4193.2015.06.004

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Zhai Weidong. Sea surface partial pressure of CO2 and its controls in the northern South China Sea in the non-bloom period in spring[J]. Haiyang Xuebao, 2015, 37(6): 31-40. doi: 10.3969/j.issn.0253-4193.2015.06.004

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Zhai Weidong. Sea surface partial pressure of CO₂ and its controls in the northern South China Sea in the non-bloom period in spring[J]. Haiyang Xuebao, 2015, 37(6): 31-40. doi: 10.3969/j.issn.0253-4193.2015.06.004

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Sea surface partial pressure of CO₂ and its controls in the northern South China Sea in the non-bloom period in spring

doi: 10.3969/j.issn.0253-4193.2015.06.004

Zhai Weidong

National Marine Environmental Monitoring Center, Dalian 116023, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China

Received Date: 2014-10-08

Abstract

Abstract

To clarify air-sea CO₂ flux and the controls in the northern South China Sea (SCS) and the adjacent open sea areas around the Luzon Strait, a new dataset of sea surface and atmospheric partial pressures of CO₂ (pCO₂) associated with underway temperature and salinity obtained from late March to mid-April in 2009 was investigated. In the northern SCS open sea areas other than those estuaries and the coastal current area, atmospheric pCO₂ increased from 368 μatm at a south site to 380 μatm at a north site, with the average of 371 μatm, while sea surface pCO₂ declined from 405 μatm in the south area to 293 μatm in the north area. The northern SCS pCO₂ was significantly influenced by sea surface temperature, although non-temperature effects such as water mixing, air-sea exchanges, and biological activities also affected the sea surface pCO₂ distribution. In the Kuroshio-influenced area around the Luzon Strait, however, sea surface pCO₂ in given water temperature was generally lower than that in the northern SCS. Based on this dataset, the author suggested that, the springtime CO₂ uptake in the northern SCS basin area and the area west of the Luzon Strait from the atmosphere was nearly equal to CO₂ release to the atmosphere at the same time, which is similar to the consensus in relevant literatures based on qualified data. The earlier report published in Haiyang Xuebao in 2014 suggesting that the northeast part of the SCS serves as a significant source of the atmospheric CO₂ in spring is questionable.
- partial pressure of CO₂,
- temperature effect,
- northern South China Sea,
- Luzon Strait

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References

IPCC. Climate Change 2013: The Physical Science Basis: Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change[R]. Cambridge: Cambridge University Press, 2013.

Brasseur G, Denman K, Chidthaisong A, et al. Couplings between changes in the climate system and biogeochemistry[C]//Solomon S, Qin Dahe, Manning M, et al. Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press, 2007: 499-587.

Khatiwala S, Primeau F, Hall T. Reconstruction of the history of anthropogenic CO₂ concentrations in the ocean[J]. Nature, 2009, 462(7271): 346-349.

Le Quéré C, Andres R J, Boden T, et al. The global carbon budget 1959-2011[J]. Earth System Science Data, 2013, 5: 165-185.

Sabine C L, Feely R A, Gruber N, et al. The oceanic sink for anthropogenic CO₂[J]. Science, 2004, 305(5682): 367-371.

Gruber N, Gloor M, Mikaloff Fletcher S E, et al. Oceanic sources, sinks, and transport of atmospheric CO₂[J]. Global Biogeochemical Cycles, 2009, 23(1): GB1005.

Takahashi T, Sutherland S C, Wanninkhof R, et al. Climatological mean and decadal change in surface ocean pCO₂, and net sea-air CO₂ flux over the global oceans[J]. Deep-Sea Research Part Ⅱ: Topical Studies in Oceanography, 2009, 56(8/10): 554-577.

Sun Qingyang, Tang Danling, Legendre L, et al. Enhanced sea-air CO₂ exchange influenced by a tropical depression in the South China Sea[J]. Journal of Geophysical Research: Oceans, 2014, 119(10): 6792-6804.

翟惟东. 南海北部与珠江河口水域CO₂通量及其调控因子[D]. 厦门: 厦门大学, 2003. Zhai Weidong. Air-sea fluxes of carbon dioxide and upper ocean biogeochemical processes in the northern South China Sea and the Pearl River Estuary[D]. Xiamen: Xiamen University, 2003.

Chen C T A, Wang Shulun, Chou Wenchen, et al. Carbonate chemistry and projected future changes in pH and CaCO₃ saturation state of the South China Sea[J]. Marine Chemistry, 2006, 101(3/4): 277-305.

Dai Minhan, Cao Zhimian, Guo Xianghui, et al. Why are some marginal seas sources of atmospheric CO₂?[J]. Geophysical Research Letters, 2013, 40(10): 2154-2158.

Zhai Weidong, Dai Minhan, Cai Weijun, et al. The partial pressure of carbon dioxide and air-sea fluxes in the northern South China Sea in spring, summer and autumn[J]. Marine Chemistry, 2005, 96(1/2): 87-97.

Zhai W D, Dai M H, Chen B S, et al. Seasonal variations of sea-air CO₂ fluxes in the largest tropical marginal sea (South China Sea) based on multiple-year underway measurements[J]. Biogeosciences, 2013, 10(11): 7775-7791.

Chou Wenchen, Sheu D D D, Chen C T A, et al. Seasonal variability of carbon chemistry at the SEATS time-series site, Northern South China Sea between 2002 and 2003[J]. Terrestrial, Atmospheric and Oceanic Sciences, 2005, 16(2): 445-465.

Tseng C M, Wong G T F, Chou W C, et al. Temporal variations in the carbonate system in the upper layer at the SEATS station[J]. Deep-Sea Research Part Ⅱ: Topical Studies in Oceanography, 2007, 54(14): 1448-1468.

姜亦飞, 王辉, 乔然, 等. 南海东北部春季海表pCO₂分布及海-气CO₂通量[J]. 海洋学报, 2014, 36(6): 18-24. Jiang Yifei, Wang Hui, Qiao Ran, et al. The distribution of pCO₂ in surface water and CO₂ flux at air-sea interface in northeast part of the South China Sea in spring[J]. Haiyang Xuebao, 2014, 36(6): 18-24.

Hu Jianyu, Kawamura H, Hong Huasheng, et al. A review on the currents in the South China Sea: seasonal circulation, South China Sea warm current and Kuroshio intrusion[J]. Journal of Oceanography, 2000, 56(6): 607-624.

Liss P S, Merlivat L. Air-sea gas exchange rates: introduction and synthesis[C]//Buat-Menard P. The Role of Air-Sea Exchange in Geochemical Cycling. Norwell: D. Reidel Publishing Company, 1986: 113-127.

Wanninkhof R, Asher W E, Ho D T, et al. Advances in quantifying air-sea gas exchange and environmental forcing[J]. Annual Review of Marine Science, 2009, 1: 213-244.

Wanninkhof R. Relationship between wind speed and gas exchange over the ocean[J]. Journal of Geophysical Research, 1992, 97(C5): 7373-7382.

Wanninkhof R, McGillis W R. A cubic relationship between air-sea CO₂ exchange and wind speed[J]. Geophysical Research Letters, 1999, 26(13): 1889-1892.

Ho D T, Law C S, Smith M J, et al. Measurements of air-sea gas exchange at high wind speeds in the Southern Ocean: implications for global parameterizations[J]. Geophysical Research Letters, 2006, 33(16): L16611.

Sweeney C, Gloor E, Jacobson A R, et al. Constraining global air-sea gas exchange for CO₂ with recent bomb ¹⁴C measurements[J]. Global Biogeochemical Cycles, 2007, 21(2): GB2015.

Zhao Dongliang, Xie Lian. A practical bi-parameter formula of gas transfer velocity depending on wave states[J]. Journal of Oceanography, 2010, 66(5): 663-671.

Edson J B, Fairall C W, Bariteau L, et al. Direct covariance measurement of CO₂ gas transfer velocity during the 2008 Southern Ocean gas exchange experiment: Wind speed dependency[J]. Journal of Geophysical Research, 2011, 161: C00F10.

Wanninkhof R, Knox M. Chemical enhancement of CO₂ exchange in natural waters[J]. Limnology and Oceanography, 1996, 41(4): 689-697.

Weiss R F. Carbon dioxide in water and seawater: the solubility of a non-ideal gas[J]. Marine Chemistry, 1974, 2(3): 203-215.

Millero F J. Thermodynamics of the carbon dioxide system in the oceans[J]. Geochimica et Cosmochimica Acta, 1995, 59(4): 661-677.

Kanwisher J. pCO₂ in sea water and its effect on the movement of CO₂ in nature[J]. Tellus, 1960, 12(2): 209-215.

Neill C, Johnson K M, Lewis E, et al. Accurate headspace analysis of fCO₂ in discrete water samples using batch equilibration[J]. Limnology and Oceanography, 1997, 42(8): 1774-1783.

Dickson A G, Sabine C L, Christian J R. Guide to best practices for ocean CO₂ measurements[R]. PICES Special Publication, (3), North Pacific Marine Science Organization, 2007. http://cdiac.ornl.gov/oceans/Handbook_2007.html.

Körtzinger A, Mintrop L, Wallace D W R, et al. The international at-sea intercomparison of fCO₂ systems during the R/V Meteor Cruise 36/1 in the North Atlantic Ocean[J]. Marine Chemistry, 2000, 72(2/4): 171-192.

Körtzinger A, Thomas H, Schneider B, et al. At-sea intercomparison of two newly designed underway pCO₂ system-encouraging results[J]. Marine Chemistry, 1996, 52(2): 133-145.

Juranek L W, Hamme R C, Kaiser J, et al. Evidence of O₂ consumption in underway seawater lines: Implications for air-sea O₂ and CO₂ fluxes[J]. Geophysical Research Letters, 2010, 37(1): L01601.

Rehder G, Suess E. Methane and pCO₂ in the Kuroshio and the South China Sea during maximum summer surface temperatures[J]. Marine Chemistry, 2001, 75(1/2): 89-108.

Zhai Weidong, Dai Minhan, Cai Weijun. Coupling of surface pCO₂ and dissolved oxygen in the northern South China Sea: impacts of contrasting coastal processes[J]. Biogeosciences, 2009, 6(11): 2589-2598.

Takahashi T, Feely R A, Weiss R F, et al. Global air-sea flux of CO₂: an estimate based on measurements of sea-air pCO₂ difference[J]. Proceedings of the National Academy of Sciences of the United States of America, 1997, 94(16): 8292-8299.

Baer D S, Paul J B, Gupta M, et al. Sensitive absorption measurements in the near-infrared region using off-axis integrated-cavity-output spectroscopy[J]. Applied Physics B, 2002, 75(2/3): 261-265.

Crosson E R. A cavity ring-down analyzer for measuring atmospheric levels of methane, carbon dioxide, and water vapor[J]. Applied Physics B, 2008, 92(3): 403-408.

Gülzow W, Rehder G, Schneider B, et al. A new method for continuous measurement of methane and carbon dioxide in surface waters using off-axis integrated cavity output spectroscopy (ICOS): an example from the Baltic Sea[J]. Limnology and Oceanography: Methods, 2011, 9(5): 176-184.

Zhai Weidong, Dai Minhan, Cai Weijun, et al. High partial pressure of CO₂ and its maintaining mechanism in a subtropical estuary: the Pearl River estuary, China[J]. Marine Chemistry, 2005, 93(1): 21-32.

Zhai Weidong, Dai Minhan. On the seasonal variation of air-sea CO₂ fluxes in the outer Changjiang (Yangtze River) Estuary, East China Sea[J]. Marine Chemistry, 2009, 117(1/4): 2-10.

Pierrot D, Neill C, Sullivan K, et al. Recommendations for autonomous underway pCO₂ measuring systems and data-reduction routines[J]. Deep Sea Research Part Ⅱ: Topical Studies in Oceanography, 2009, 56(8/10): 512-522.

Tans P P, Fung I Y, Takahashi T. Observational constraints on the global atmospheric CO₂ budget[J]. Science, 1990, 247(4949): 1431-1438.

Takahashi T, Sutherland S C, Sweeney C, et al. Global sea-air CO₂ flux based on climatological surface ocean pCO₂, and seasonal biological and temperature effects[J]. Deep-Sea Research Part II: Topical Studies in Oceanography, 2002, 49(9/10): 1601-1622.

Sabine C L, Hankin S, Koyuk H, et al. Surface Ocean CO₂ Atlas (SOCAT) gridded data products[J]. Earth System Science Data, 2013, 5: 145-153.

Weiss R F, Price B A. Nitrous oxide solubility in water and seawater[J]. Marine Chemistry, 1980, 8(4): 347-359.

Takahashi T, Olafsson J, Goddard J G, et al. Seasonal variation of CO₂ and nutrients in the high-latitude surface oceans: a comparative study[J]. Global Biogeochemical Cycles, 1993, 7(4): 843-878.

Chen C T A. Chemical and physical fronts in the Bohai, Yellow and East China seas[J]. Journal of Marine Systems, 2009, 78(3): 394-410.

Dai Minhan, Zhai Weidong, Cai Weijun, et al. Effects of an estuarine plume-associated bloom on the carbonate system in the lower reaches of the Pearl River estuary and the coastal zone of the northern South China Sea[J]. Continental Shelf Research, 2008, 28(12): 1416-1423.

Jones D C, Ito T, Takano Y, et al. Spatial and seasonal variability of the air-sea equilibration timescale of carbon dioxide[J]. Global Biogeochemical Cycles, 2014, 28(11): 1163-1178.

Lu Zhongming, Gan Jianping, Dai Minhan. Modeling seasonal and diurnal pCO₂ variations in the northern South China Sea[J]. Journal of Marine Systems, 2012, 92(1): 30-41.

Zhai Weidong, Chen Jianfang, Jin Haiyan, et al. Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: water mixing, biological uptake of CO₂, and chemical buffering capacity[J]. Journal of Geophysical Research: Oceans, 2014, 119(9): 5638-5653.

Liu K K, Chao S Y, Shaw P T, et al. Monsoon-forced chlorophyll distribution and primary production in the South China Sea: observations and a numerical study[J]. Deep-Sea Research Part Ⅰ: Oceanographic Research Papers, 2002, 49(8): 1387-1412.

Shang Shaoling, Li Li, Li Jun, et al. Phytoplankton bloom during the northeast monsoon in the Luzon Strait bordering the Kuroshio[J]. Remote Sensing of Environment, 2012, 124: 38-48.

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