The effect of strong wind on air-sea CO2 flux in the Changjiang River Estuary and its adjacent sea areas

doi:10.3969/j.issn.1001-909X.2020.01.005

Abstract

Abstract: Underway sea surface pCO₂, sea surface temperature, sea surface salinity data, and discrete DO data in the East China Sea were obtained from August 23, 2017 to September 6, 2017. The distributions of pCO₂ in the Changjiang River Estuary and the adjacent sea areas were examined. Meanwhile, the effect of strong wind on air-sea CO₂ flux in this area was discussed based on data of a revisited section before and after a strong wind event. The results show that sea surface pCO₂ (145~929 μatm) in the study area was higher in the nearshore and lower in the offshore area. Biological production consumed dissolved inorganic carbon, and lowered sea surface pCO₂ of the Changjiang plume waters, which acted as carbon sink. The wind event (the maximum wind speed was 9.7 m·s^－1) triggered vertical mixing, enhanced carbon source significantly at nearshore area(from 0.2±1.9 to 55.0±12.4 mmol·m^－2·d^－1). While, the estimated CO₂ sink at offshore waters was stronger than that before the wind (from -12.7±2.3 to -16.8±2.5 mmol·m^－2·d^－1). Therefore, large bias in air-sea CO₂ flux estimation will be introduced if the influence of typhoon and cold-air events are not considered.

Key words: the Changjiang River Estuary, air-sea CO₂ flux, wind mixing

CLC Number:

P734

MIAO Yanyi, WANG Bin, LI Dewang, JIN Haiyan, JIANG Zhibin, MA Xiao, YU Peisong, CHEN Jianfang, WANG Junyang. The effect of strong wind on air-sea CO₂ flux in the Changjiang River Estuary and its adjacent sea areas[J]. Journal of Marine Sciences, 2020, 38(1): 42-49.

References

[1] BORGES A V. Do we have enough pieces of the jigsaw to integrate CO₂ fluxes in the coastal ocean?[J]. Estuaries, 2005, 28(1): 3-27.
[2] BORGES A V, DELILLE B, FRANKIGNOULLE M. Budgeting sinks and sources of CO₂ in the coastal ocean: Diversity of ecosystems counts[J]. Geophysical research letters, 2005, 32(14): 1-4. DOI:10.1029/2005gl023053.
[3] CAI Weijun, DAI Minghan, WANG Yongchen. Air-sea exchange of carbon dioxide in ocean margins: A province-based synthesis[J]. Geophysical Research Letters, 2006, 33(12): 347-466. DOI: 10.1029/2006GL026219.
[4] 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.
[5] LI Daoji, ZHANG Jing, HUANG Daji, et al. Oxygen depletion off the Changjiang (Yangtze River) estuary[J]. Science in China Series D: Earth Sciences, 2002, 45(12): 1137-1146.
[6] 卢汐,宋金明,袁华茂,等. 黑潮与毗邻陆架海域的碳交换[J]. 地球科学进展,2015,30(2):214-225.
LU Xi, SONG Jinming, YUAN Huamao, et al. Carbon distribution and exchange of Kuroshio and adjacent China sea shelf: A review[J]. Advances in Earth Science, 2015, 30(2): 214-225.
[7] GUO Xianghui, WONG G T F. Carbonate chemistry in the northern South China Sea shelf-sea in June 2010[J]. Deep Sea Research Part II: Topical Studies in Oceanography, 2015, 117: 119-130.DOI: 10.1016/j.dsr2.2015.02.024.
[8] TSUNOGAI S, WATANABE S, SATO T. Is there a “continental shelf pump” for the absorption of atmospheric CO₂?[J]. Tellus B: Chemical and Physical Meteorology, 1999, 51(3): 701-712.
[9] WU Liguang, WANG Bin, GENG Shuqin. Growing typhoon influence on East Asia[J]. Geophysical Research Letters, 2005, 32(18): 109-127. DOI: 10.1029/2005GL022937.
[10] CHEN Chentung Arther, LIU Choteng, CHUANG Wensen, et al. Enhanced buoyancy and hence upwelling of subsurface Kuroshio waters after a typhoon in the southern East China Sea[J]. Journal of Marine Systems, 2003, 42(1-2): 65-79.
[11] LI Dewang, CHEN Jianfang, NI Xiaobo, et al. Effects of biological production and vertical mixing on sea surface pCO₂ variations in the Changjiang River Plume during Early Autumn: A buoy-based time series study[J]. Journal of Geophysical Research: Oceans, 2018, 123(9): 6156-6173.
[12] WANG Bin, CHEN Jianfang, JIN Haiyan, et al. Diatom bloom-derived bottom water hypoxia off the Changjiang estuary, with and without typhoon influence[J]. Limnology and Oceanography, 2017, 62(4): 1552-1569.
[13] CHEN Chentung Arther, WANG Shulun. Carbon, alkalinity and nutrient budgets on the East China Sea continental shelf[J]. Journal of Geophysical Research: Oceans, 1999, 104(C9): 20675-20686.
[14] GUO Xianghui, MIYAZAWA Y, YAMAGATA T. The Kuroshio onshore intrusion along the shelf break of the East China Sea: The origin of the Tsushima Warm Current[J]. Journal of Physical Oceanography, 2006, 36(12): 2205-2231.
[15] 毛汉礼,甘子钧,蓝淑芳. 长江冲淡水及其混合问题的初步探讨[J]. 海洋与湖沼,1963,5(3):183-206.
MAO Hanli, GAN Zijun, LAN Shufang. A preliminary study of the Yangtze Diluted Water and its mixing processes[J]. Oceanologia et Limnoligia Sinica, 1963, 5(3): 183-206.
[16] 苏纪兰. 中国近海的环流动力机制研究[J]. 海洋学报,2001,23(3):1-14.
SU Jilan. A review of circulation dynamics of the coastal oceans near China[J]. Acta Oceanologica Sinica, 2001, 23(3): 1-14.
[17] 浦泳修. 夏季长江冲淡水扩展机制的初析[J]. 东海海洋,1983(1):45-53.
PU Yongxiu. Preliminary analysis on the mechanism of expansion of the Changjiang diluted in summer[J]. Journal of Marine Sciences, 1983(1): 45-53.
[18] YU Peisong, ZHANG Haisheng, ZHENG Minhui, et al. The partial pressure of carbon dioxide and air-sea fluxes in the Changjiang River Estuary and adjacent Hangzhou Bay[J]. Acta Oceanologica Sinica, 2013, 32(6): 13-17.
[19] 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.
[20] FEELY R A, WANNINKHOF R, MILBURN H B, et al. A new automated underway system for making high precision pCO₂ measurements onboard research ships[J]. Analytica Chimica Acta, 1998, 377(98): 185-191.
[21] WANNINKHOF R, THONING K. Measurement of fugacity of CO₂ in surface water using continuous and discrete sampling methods[J]. Marine Chemistry, 1993, 44(2-4): 189-204.
[22] BRYAN J R, RILEY J P, WILLIAMS P J L. A Winkler procedure for making precise measurements of oxygen concentration for productivity and related studies[J]. Journal of Experimental Marine Biology& Ecology, 1976, 21(3): 191-197.
[23] LISS P S. Flux of gases across the air-sea interface[J]. Nature, 1974, 247: 181-184.DOI: 10.1038/247181a0.
[24] LISS P S, MERLIVAT L. Air-sea gas exchange rates: Introduction and synthesis[M]//The role of air-sea exchange in geochemical cycling. Springer, Dordrecht, 1986: 113-127.
[25] 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. DOI: 10.1146/annurev.marine.010908.163742.
[26] WANNINKHOF R. Relationship between wind speed and gas exchange over the ocean[J]. Journal of Geophysical Research: Oceans, 1992, 97(C5): 7373-7382.
[27] 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.
[28] GUO Xianghui, ZHAI Weidong, DAI Minhan, et al. Air-sea CO₂ fluxes in the East China Sea based on multiple-year underway observations[J]. Biogeosciences, 2015, 12(18): 5495-5514.
[29] CHEN Chentung Arthur, ZHAI Weidong, DAI Minhan. Riverine input and air-sea CO₂ exchanges near the Changjiang (Yangtze River) Estuary: Status quo and implication on possible future changes in metabolic status[J]. Continental Shelf Research, 2008, 28(12): 1476-1482.
[30] KIM D, CHOI S H, SHIM J H, et al. Revisiting the seasonal variations of sea-air CO₂ fluxes in the northern East China Sea[J]. Terrestrial, Atmospheric & Oceanic Sciences, 2013, 24(3): 409-419.
[31] NEMOTO K, MIDORIKAWA T, WADA A, et al. Continuous observations of atmospheric and oceanic CO₂ using a moored buoy in the East China Sea: Variations during the passage of typhoons[J]. Deep Sea Research Part II: Topical Studies in Oceanography, 2009, 56(8-10): 542-553.
[32] LI Dewang, CHEN Jianfang, NI Xiaobo, et al. Hypoxic Bottom Waters as a Carbon Source to Atmosphere During a Typhoon Passage Over the East China Sea[J]. Geophysical Research Letters, 2019, 46(20): 1-9.
[33] CHOU W C, GONG G C, SHEU D D, et al. Surface distributions of carbon chemistry parameters in the East China Sea in summer 2007[J]. Journal of Geophysical Research: Oceans, 2009, 114(C7): 1-12.DOI: 10.1029/2008JC005128.
[34] WANG Guizhi, DAI Minhan, SHEN S S P, et al. Quantifying uncertainty sources in the gridded data of sea surface CO₂ partial pressure[J]. Journal of Geophysical Research: Oceans, 2014, 119(8): 5181-5189.
[35] QU Baoxiao, SONG Jinming, YUAN Huamao, et al. Summer carbonate chemistry dynamics in the Southern Yellow Sea and the East China Sea:Regional variations and controls[J]. Continental Shelf Research, 2015, 111: 250-261.DOI: 10.1016/j.csr.2015.08.017.

The effect of strong wind on air-sea CO₂ flux in the Changjiang River Estuary and its adjacent sea areas

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