Articles | Volume 17, issue 7
https://doi.org/10.5194/essd-17-3189-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-17-3189-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A high-resolution temperature–salinity dataset observed by autonomous underwater vehicles for the evolution of mesoscale eddies and associated submesoscale processes in the South China Sea
Chunhua Qiu
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Zhenyang Du
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Haibo Tang
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Zhenhui Yi
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Jiawei Qiao
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Dongxiao Wang
CORRESPONDING AUTHOR
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
Xiaoming Zhai
Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK
Wenbo Wang
School of Marine Sciences, State Key Laboratory of Environmental Adaptability for Industrial Products, Sun Yat-Sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
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Qi'an Chen, Hongzhou Xu, Dongxiao Wang, Bo Hong, Chunlei Liu, Zheyang Zhang, Huichang Jiang, Wei Song, Tong Long, Ling Wang, Sumin Liu, and Rongjie Chen
EGUsphere, https://doi.org/10.5194/egusphere-2025-283, https://doi.org/10.5194/egusphere-2025-283, 2025
Short summary
Short summary
NIWs have horizontal spatial scales of 10–100 km and slow group velocities, making them to interact strongly with mesoscale eddies. In the northwestern SCS, large portion of eddy propagate westward and may interact with local NIWs. In this study, four moorings were deployed in this area and they captured a vivid case of interaction between a cyclonic eddy and NIWs. Our paper provides direct evidence of strong interaction between eddy and NIWs in the northwestern SCS.
Thomas Wilder, Xiaoming Zhai, David Munday, and Manoj Joshi
Ocean Sci., 19, 1669–1686, https://doi.org/10.5194/os-19-1669-2023, https://doi.org/10.5194/os-19-1669-2023, 2023
Short summary
Short summary
The dissipation rate of eddy energy in current energy budget-based eddy parameterisations is still relatively unconstrained, leading to uncertainties in ocean transport and ocean heat uptake. Here, we derive a dissipation rate due to the interaction of surface winds and eddy currents, a process known to significantly damp ocean eddies. The dissipation rate is quantified using seasonal climatology and displays wide spatial variability, with some of the largest values found in the Southern Ocean.
Cited articles
Bonnici, J. and Billant, P.: Evolution of a vortex in a strongly stratified shear flow. Part 1. Asymptotic analysis, J. Fluid Mech., 893, A17, https://doi.org/10.1017/jfm.2020.226, 2020.
Caffaz, A., Caiti, A., Casalino, G., and Turetta, A.: The hybrid glider/AUV folaga, IEEE Robot. Autom. Mag., 17, 31–44, https://doi.org/10.1109/MRA.2010.935791, 2010.
Chelton, D., Schlax, M., Samelson, R., and de Szoeke, R.: Global observations of large oceanic eddies, Geophys. Res. Lett., 34, L15606, https://doi.org/10.1029/2007GL030812, 2007.
Chelton, D., Schlax, M., and Samelson, R.: Global observations of nonlinear mesoscale eddies, Prog. Oceanogr., 91, 167–216, https://doi.org/10.1016/j.pocean.2011.01.002, 2011.
Chen, G., Hou, Y., and Chu, X.: Mesoscale eddies in the South China Sea: Mean properties, spatiotemporal variability, and impact on thermohaline structure, J. Geophys. Res.-Oceans, 116, C06018, https://doi.org/10.1029/2010JC006716, 2011.
Chu, P., Chen, Y., and Lu, S.: Wind-driven South China Sea deep basin warm-core/cool-core eddies, J. Oceanogr., 54, 347–360, https://doi.org/10.1007/bf02742619, 1998.
Dale, W.: Winds and drift currents in the South China Sea, Malayan Journal of Tropical Geography, 8, 1–31, 1956.
Dong, J. and Zhong, Y.: The spatiotemporal features of submesoscale processes in the northeastern South China Sea, Acta Oceanol. Sin., 37, 8–18, https://doi.org/10.1007/s13131-018-1277-2, 2018.
Fang, W., Fang, G., Shi, P., Huang, Q., and Xie, Q.: Seasonal structures of upper layer circulation in the southern South China Sea from in situ observations, J. Geophys. Res.-Oceans, 107, 23–1-23-2, https://doi.org/10.1029/2002JC001343, 2002.
Fofonoff, N. P. and Millard, R. C.: Algorithms for computation of fundamental properties of seawater, UNESCO Tech. Pap. in Mar. Sci., Spectrochim. Acta Pt. A, 44, 53, https://doi.org/10.1016/j.saa.2012.12.093, 1983.
Fox-Kemper, B., Ferrari, R., and Hallberg, R.: Parameterization of mixed layer eddies. Part I: Theory and diagnosis, J. Phys. Oceanogr., 38, 1145–1165, https://doi.org/10.1175/2007JPO3792.1, 2008.
Gao, Z., Chen, Z., Huang, X., Yang, H., Wang, Y., Ma, W., and Luo, C.: Estimating the energy flux of internal tides in the northern South China Sea using underwater gliders, J. Geophys. Res.-Oceans, 129, e2023JC020385, https://doi.org/10.1029/2023JC020385, 2024.
Gaube, P., Chelton, D. B., Samelson, R. M., Schlax, M. G., and O'Neill, L. W.: Satellite Observations of Mesoscale Eddy-Induced Ekman Pumping, J. Phys. Oceanogr., 45, 104–132, https://doi.org/10.1175/JPO-D-14-0032.1, 2015.
He, Q., Zhan, H., Cai, S., He, Y., Huang, G., and Zhan, W.: A new assessment of mesoscale eddies in the South China Sea: surface features, three-dimensional structures, and thermohaline transports, J. Geophys. Res.-Oceans, 123, 4906–4929, https://doi.org/10.1029/2018JC014054, 2018.
He, Q., Zhan, H., Xu, J., Cai, S., Zhan, W., Zhou, L., and Zha, G.: Eddy-induced chlorophyll anomalies in the western South China Sea, J. Geophys. Res.-Oceans, 124, https://doi.org/10.1029/2019JC015371, 2019.
He, Y., Xie, J., and Cai, S.: Interannual variability of winter eddy patterns in the eastern South China Sea, Geophys. Res. Lett., 43, 5185–5193, https://doi.org/10.1002/2016GL068842, 2016.
Hobson, B. W., Bellingham, J. G., Kieft, B., McEwen, R., Godin, M., and Zhang, Y.: Tethys-class long range AUVs - extending the endurance of propeller-driven cruising AUVs from days to weeks, in: IEEE/OES Autonomous Underwater Vehicles (AUV), Southampton, UK, 24–27 September 2012, 1–8, https://doi.org/10.1109/AUV.2012.6380735, 2012.
Hu, Z., Lin, H., Liu Z., Cao Z., Zhang F., Jiang Z., Zhang Y., Zhou K., and Dai M.: Observations of a filamentous intrusion and vigorous submesoscale turbulence within a cyclonic mesoscale eddy, J. Phys. Oceanogr., 53, 1615–1627, https://doi.org/10.1175/JPO-D-22-0189.1, 2023.
Huang, Y., Qiao, J., Yu, J., Wang, Z., Xie, Z., and Liu, K.: Sea-Whale 2000: a long-range hybrid autonomous underwater vehicle for ocean observations, in: OCEANS 2019 – Marseille, Marseille, France, 17–20 June 2019, 1–6, https://doi.org/10.1109/OCEANSE.2019.8867050, 2019.
Hwang, C. and Chen, S.: Circulations and eddies over the South China Sea derived from TOPEX/Poseidon altimetry, J. Geophys. Res.-Oceans, 105, 23943–23965, https://doi.org/10.1029/2000JC900092, 2000.
Li, H., Xu, F., and Wang, G.: Global mapping of mesoscale eddy vertical tilt, J. Geophys. Res.-Oceans, 127, e2022JC019131, https://doi.org/10.1029/2022JC019131, 2022.
Li, L., Worth, D., Nowlin, J., and Su. J.: Anticyclonic rings from the Kuroshio in the South China Sea, Deep-Sea Res. Pt. I, 45, 1469–1482, https://doi.org/10.1016/s0967-0637(98)00026-0, 1998.
Lin, P., Wang, F., Chen, Y., and Tang, X.: Temporal and spatial variation characteristics of eddies in the South China Sea I: Statistical analyses, Acta Oceanol. Sin., 29, 14–22, https://doi.org/10.3321/j.issn:0253-4193.2007.03.002, 2007.
McWilliams, J.: Submesoscale currents in the ocean, P. R. Soc. A-Math. Phy., 472, 20160117, https://doi.org/10.1098/rspa.2016.0117, 2016.
Morrow, R., Birol, F., Griffin, D., and Sudre, J.: Divergent pathways of cyclonic and anti-cyclonic ocean eddies, Geophys. Res. Lett., 31, L24311, https://doi.org/10.1029/2004gl020974, 2004.
Nan, F., He, Z., Zhou, H., and Wang, D.: Three long-lived anticyclonic eddies in the northern South China Sea, J. Geophys. Res.-Oceans, 116, C05002, https://doi.org/10.1029/2010JC006790, 2011.
Ni, Q., Zhai, X., Wilson, C., Chen, C., and Chen, D.: Submesoscale eddies in the South China Sea, Geophys. Res. Lett., 48, e2020GL091555, https://doi.org/10.1029/2020GL091555, 2021.
Oey, L.: Eddy- and wind-forced shelf circulation, J. Geophys. Res., 100, 8621–8637, https://doi.org/10.1029/95JC00785, 1995.
Okkonen, S., Weingartener, T., Danielson, S., Musgrave, D., and Schmidt, G. M.: Satellite and hydrographic observations of eddy-induced shelf-slope exchange in the northwestern Gulf of Alaska, J. Geophys. Res., 108, 3033, https://doi.org/10.1029/2002JC001342, 2003.
Qi, Y., Shang, C., Mao, H., Qiu, C., and Shang, X.: Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea, Acta Oceanol. Sin., 39, 69–81, https://doi.org/10.1007/s13131-020-1676-z, 2020.
Qiao, J., Qiu, C., Wang, D., Huang, Y., Zhang, X., and Huang, Y.: Multi-stage Development within Anisotropy Insight of an Anticyclone Eddy Northwestern South China Sea in 2021, Geophys. Res. Lett., 50, 19, https://doi.org/10.1029/2023GL104736, 2023.
Qiu, C., Mao, H., Yu, J., Xie, Q., Wu, J., Lian, S., and Liu, Q.: Sea surface cooling in the Northern South China Sea observed using Chinese Sea-wing Underwater Glider Measurements, Deep-Sea Res. Pt. I, 105, 111–118, https://doi.org/10.1016/j.dsr.2015.08.009, 2015.
Qiu, C., Mao, H., Liu, H., Xie, Q., Yu, J., Su, D., Ouyang, J., and Lian, S.: Deformation of a warm eddy in the northern South China Sea, J. Geophys. Res.-Oceans, 124, 5551–5564, https://doi.org/10.1029/2019JC015288, 2019a.
Qiu, C., Mao, H., Wang, Y., Su, D., and Lian, S.: An irregularly shaped warm eddy observed by Chinese underwater gliders, J. Oceanogr., 75, 139–148, https://doi.org/10.1007/s10872-018-0490-0, 2019b.
Qiu, C., Liang, H., Huang, Y., Mao, H., Yu, J., Wang, D., and Su, D.: Development of double cyclonic mesoscale eddies at around Xisha Islands observed by a `Sea-Whale 2000' autonomous underwater vehicle, Appl. Ocean Res., 101, 102270, https://doi.org/10.1016/j.apor.2020.102270, 2020.
Qiu, C., Yi, Z., Su, D., Wu, Z., Liu, H., Lin, P., He, Y., and Wang, D.: Cross-slope heat and salt transport induced by slope intrusion eddy's horizontal asymmetry in the northern South China Sea, J. Geophys. Res.-Oceans, 127, e2022JC018406, https://doi.org/10.1029/2022JC018406, 2022.
Qiu, C., Yang, Z., Feng, M., Yang, J., Rippeth, T. P., Shang, X., Sun, Z., Jing, C., and Wang, D.: Observational energy transfers of a spiral cold filament within an anticyclonic eddy, Prog. Oceanogr., 220, 1.1–1.12, https://doi.org/10.1016/j.pocean.2023.103187, 2024a.
Qiu, C., Du, Z., Tang, H., Yi, Z., Qiao, J., Wang, D., Zhai, X., and Wang, W.: A High-Resolution Temperature-Salinity Dataset Observed by Autonomous Underwater Vehicles for the Evolution of Mesoscale Eddies and Associated Submesoscale Processes in South China Sea, Science Data Bank [data set], https://doi.org/10.57760/sciencedb.11996, 2024b.
Rainville, L., Lee, C., Arulananthan, K., Jinadasa, S., Fernando, H., Priyadarshani, W., and Wijesekera, H.: Water mass exchanges between the Bay of Bengal and Arabian Sea from multiyear sampling with autonomous gliders, J. Phys. Oceanogr., 52, 2377–2396, https://doi.org/10.1175/JPO-D-21-0279.1, 2022.
Rudnick, D. L., Davis, R. E., Eriksen, C. C., Fratantoni, D. M., and Perry, M. J.: Underwater Gliders for Ocean Research, Mar. Technol. Soc. J., 38, 73–84, https://doi.org/10.4031/002533204787522703, 2004.
Shang, X., Shu, Y., Wang, D., Yu, J., Mao, H., Liu, D., Qiu, C., and Tang, H.: Submesoscale motions driven by down-front wind around an anticyclonic eddy with a cold core, J. Geophys. Res.-Oceans, 128, e2022JC019173, https://doi.org/10.1029/2022JC019173, 2023.
Shu, Y., Xiu, P., Xue, H., Yao, J., and Yu, J.: Glider-observed anticyclonic eddy in northern South China Sea, Aquat. Ecosyst. Health, 19, 233–241, https://doi.org/10.1080/14634988.2016.1208028, 2016.
Su, D., Lin, P., Mao, H., Wu, J., Liu, H., Cui, Y., and Qiu, C.: Features of slope intrusion mesoscale eddies in the northern South China Sea, J. Geophys. Res.-Oceans, 125, e2019JC015349, https://doi.org/10.1029/2019JC015349, 2020.
Tang, H., Shu, Y., Wang, D., Xie, Q., Zhang, Z., Li, J., Shang, X., Zhang, O., and Liu, D.: Submesoscale processes observed by high-frequency float in the western South China Sea, Deep-Sea Res. Pt. I, 192, 103896, https://doi.org/10.1016/j.dsr.2022.103896, 2022.
Thomas, L., Taylor, J., Ferrari, R., and Terrence M.: Symmetric instability in the Gulf Stream, Deep-Sea Res. Pt. II, 91, 96–110, https://doi.org/10.1016/j.dsr2.2013.02.025, 2013.
Todd, R. E. and Ren, A. S.: Warming and lateral shift of the Gulf Stream from in situ observations since 2001, Nat. Clim. Change, 13, 1348–1352, https://doi.org/10.1038/s41558-023-01835-w, 2023.
Wang, G., Su, J., and Chu, P.: Mesoscale eddies in the South China Sea observed with altimetry, Geophys. Res. Lett., 30, 2121, https://doi.org/10.1029/2003GL018532, 2003.
Wang, J.: The warm-core eddy in the northern South China Sea, I. Preliminary observations on the warm-core eddy, Acta Oceanogr. Taiwanica, 18, 92–103, 1987.
Wang, Q., Zeng, L., Li, J., Chen, J., He, Y., Yao, J., Wang, D., and Zhou, W.: Observed Cross-Shelf Flow Induced by Mesoscale Eddies in the Northern South China Sea, J. Phys. Oceanogr., 48, 1609–1628, https://doi.org/10.1175/JPO-D-17-0180.1, 2018.
Wu, J., Zhang, M., and Sun, X.: Hydrodynamic characteristics of the main parts of a hybrid-driven underwater glider PETREL, in: Autonomous Underwater Vehicles, edited by: Nuno A. Cruz, The Institution of Engineering and Technology, London, UK, https://doi.org/10.5772/24750, 2011.
Xiu, P., Chai, F., Shi, L., Xue, H., and Chao, Y.: A census of eddy activities in the South China Sea during 1993-2007, J. Geophys. Res.-Oceans, 115, C03012, https://doi.org/10.1029/2009JC005657, 2010.
Xu, J. and Su, J.: Hydrographic analysis of Kuroshio intrusion into the South China Sea II: Observations during August to September 1994, Tropical Oceanography, 2, 1–23, 1997.
Yang, Q., Nikurashin, M., Sasaki, H., Sun, H., and Tian, J.: Dissipation of mesoscale eddies and its contribution to mixing in the northern South China Sea, Sci. Rep.-UK, 9, 556, https://doi.org/10.1038/s41598-018-36610-x, 2019.
Yi, Z., Wang, D., Qiu, C., Mao, H., Yu, J., and Lian, S.: Variations in dissolved oxygen induced by a tropical storm within an anticyclone in the Northern South China Sea, J. Ocean U. China, 21, 1084–1098, https://doi.org/10.1007/s11802-022-4992-4, 2022.
Yi, Z., Qiu, C., Wang, D., Cai, Z., Yu, J., and Shi, J.: Submesoscale kinetic energy induced by vertical buoyancy fluxes during the tropical cyclone Haitang, J. Geophys. Res.-Oceans, 129, e2023JC020494, https://doi.org/10.1029/2023JC020494, 2024.
Yu, J., Zhang, A, Jing, W. Chen, Q. Tian, Y., and Liu, W.: Development and Experiments of the Sea-Wing Underwater Glider, China Ocean Eng., 25, 721–736, https://doi.org/10.1007/s13344-011-0058-x, 2011.
Zhang, Z. and Qiu, B.: Evolution of submesoscale ageostrophic motions through the life cycle of oceanic mesoscale eddies, Geophys. Res. Lett., 45, 11847–11855, https://doi.org/10.1029/2018GL080399, 2018.
Zhang, Z., Tian, J., Qiu, B., Zhao, W., Chang, P., and Wu, D.: Observed 3D Structure, Generation, and Dissipation of Oceanic Mesoscale Eddies in the South China Sea, Sci. Rep.-UK, 6, 24349, https://doi.org/10.1038/srep24349, 2016.
Zhang, Z., Zhao, W., Qiu, B., and Tian, J.: Anticyclonic eddy sheddings from Kuroshio loop and the accompanying cyclonic eddy in the Northeastern South China Sea, J. Phys. Oceanogr., 47, 1243–1259, https://doi.org/10.1175/JPO-D-16-0185.1, 2017.
Short summary
The high-resolution autonomous underwater vehicle (AUV) dataset for the South China Sea (SCS) provides 13 491 temperature and salinity profiles and covers 463 d of experiments. To our knowledge, the resolution and length of this dataset are enough to detect the asymmetry, vertical tilt, and temporal evolution of mesoscale eddies (MEs) and the corresponding submesoscale processes. The dataset is expected to improve the accuracy of current and biogeochemistry numerical models. More projects conducting AUV experiments will be promoted in the future.
The high-resolution autonomous underwater vehicle (AUV) dataset for the South China Sea (SCS)...
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