A numerical model study on the spatial and temporal variabilities of dissolved oxygen in Qinzhou Bay of the northern Beibu Gulf

Gaolei Cheng Shiqiu Peng Bin Yang Dongliang Lu

Gaolei Cheng, Shiqiu Peng, Bin Yang, Dongliang Lu. A numerical model study on the spatial and temporal variabilities of dissolved oxygen in Qinzhou Bay of the northern Beibu Gulf[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2243-1
Citation: Gaolei Cheng, Shiqiu Peng, Bin Yang, Dongliang Lu. A numerical model study on the spatial and temporal variabilities of dissolved oxygen in Qinzhou Bay of the northern Beibu Gulf[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2243-1

doi: 10.1007/s13131-023-2243-1

A numerical model study on the spatial and temporal variabilities of dissolved oxygen in Qinzhou Bay of the northern Beibu Gulf

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  • Figure  1.  (a) The model domain and (b) the locations of observation stations.

    Figure  2.  The observed and simulated (a) water level at Qinzhoug port, (b) velocity (b) and (c) direction at C1 station.

    Figure  3.  (a)The seasonal variation and (b) scatter plot of the monthly chlorophyll from MODIS and model simulation.

    Figure  4.  The observed and simulated the mean monthly of surface PO4 (a), NO3 (b), NH4 (c) and DO (d) in the inner bay (as indicated in Fig. 1b).

    Figure  5.  The monthly chlorophyll from MODIS and model simulation from 2010 to 2019.

    Figure  6.  The observed and simulated monthly mean (a) surface salinity, (b) surface temperature, and (c) DO in the inner bay from 2010 to 2019.

    Figure  7.  The same as Fig. 6 except for the outer bay.

    Figure  8.  The monthly mean (a, c) salinity and (b, d) DO in winter (February, left panels) and summer (July, right panels) along transection A (as indicated in Fig. 1b). The red dotted line shows the location of transection B shown in Fig. 10.

    Figure  9.  The monthly mean (a, d) NH4, (b, e) NO3, and (c, f) PO4 in winter (February, left panels) and summer (July, right panels) along transection A (as indicated in Fig. 1b).

    Figure  10.  The monthly mean (a, c) salinity and (b, d) DO in winter (February, left panels) and summer (July, right panels) along transection B (as indicated in Fig. 1b). The black dotted line shows the location of transaction A shown in Figs 8 and 9.

    Figure  11.  The differences of DO against the control experiment for the sensitivity experiments (a, c) 0.6 RD-CTRL and (b, d) 1.5 RD-CTRL in winter (February, left panels) and summer (July, right panels) along transection A (as indicated in Fig. 1b).

    Figure  12.  The differences of DO against the control experiment for the sensitivity experiments (a, c) CTRL-Notide and (b, d) CTRL-Nowind in winter (February, left panels) and summer (July, right panels) along transection A (as indicated in Fig. 1b).

    Figure  13.  The differences of the monthly mean (a, c) surface and (b, d) bottom currents against the control experiment for the sensitivity experiment NW in winter (February, left panels) and summer (July, right panels).

    Table  1.   The multiplying factors of monthly discharge for different rivers during 2012−2017

    YearMaolingQinDafengNanliu
    20121.170.670.360.71
    20132.921.651.671.75
    20140.860.720.860.97
    20152.160.561.301.12
    20160.971.101.201.17
    20170.941.021.521.72
    下载: 导出CSV

    Table  2.   List of experiments.

    ExperimentNutrientRiver dischargeTideWind
    CTRL100%100%YesYes
    0.6RD100%60%YesYes
    1.5RD100%150%YesYes
    Notide100%100%NoYes
    Nowind100%100%YesNo
    下载: 导出CSV
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  • 收稿日期:  2023-02-21
  • 录用日期:  2023-06-16
  • 网络出版日期:  2024-04-26

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