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首页> 外文期刊>Dynamics of Atmospheres and Oceans >Surface and subsurface signatures of monsoon intraseasonal oscillations from moored buoys observation in the Bay of Bengal
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Surface and subsurface signatures of monsoon intraseasonal oscillations from moored buoys observation in the Bay of Bengal

机译：孟加拉湾停泊浮标观察的季风陷入困境的表面和地下象征

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摘要

The work identified the monsoon intraseasonal oscillation (MISO) from the observed met-ocean parameters from the moored buoys and satellite datasets during June 2013 - September 2013. The 30-60 days bandpass filtered winds, sea surface temperature (SST), and rainfall from both the satellites and moored buoys have indicated the existence of active and break phases of MISOs with a periodicity of 10-12 days. All the parameters show a northward propagation of the MISO signals from the southern to the northern BoB with stronger magnitude on the north of 12 degrees N. The warmer SST causes the high wind and precipitation in an active phase after 4-5 days. During active phases, SST dropped, and break phase occurs with less wind and precipitation after 10-12 days. Prominent signatures of the MISOs are also observed along the ocean subsurface from the temperature, salinity, and current profiles. The 23 degrees C isotherm (D23) deepens during the active phases of the MISOs to make the surface warm. The D23 shoals during the break phases, indicating cooling of the ocean surface. The in-phase relationship of 100 m temperature and wind speeds together indicate an important role of the surface winds during the different phases of MISO. Deepening and shoaling of mixed layer are observed in the upper ocean during the different MISO phases with varying characteristics in the northern and southern BoB. The subsurface signatures of MISOs are strong near 100 m for temperature, but for salinity and currents, the signatures are restricted within 50 m depth.
机译：该工作确定了2013年6月的被停泊浮标和卫星数据集中观察到的欧海参数的季风陷入困难（MISO） - 2013年9月.30-60天带通风，海面温度（SST）和降雨量卫星和系泊浮标都表明存在的母乳活性和断裂阶段，周期性为10-12天。所有参数都显示出偏南到北鲍勃的味噌信号的向北传播，北北部的距较强的数量较强。温暖的SST在4-5天后导致高风和沉淀在活性相中。在活性阶段期间，SST掉落，发生断裂阶段，在10-12天后较小的风和沉淀。米斯的突出象征也沿着温度，盐度和电流型材沿着海洋地下观察到的味噌。在味噌的有源阶段期间，23摄氏度（D23）加深，以使表面温暖。在断裂阶段期间D23浅，表示海洋表面的冷却。 100米温度和风速的相位关系在一起表示表面风在味噌的不同阶段期间的重要作用。在不同的味噌阶段在北部和南部鲍勃不同的味噌阶段，在上海观察到混合层的深化和俯就。温度近100米的米萨斯差异近100米，但对于盐度和电流，签名在50米深度范围内受到限制。

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  • 来源
    《Dynamics of Atmospheres and Oceans》 |2021年第9期|101240.1-101240.12|共12页
  • 作者

    Bhuyan Debi Prasad; Mandal Samiran; Ray Arkaprava; Sil Sourav; Venkatesan R.;

  • 作者单位

    Indian Inst Technol Bhubaneswar Sch Earth Ocean & Climate Sci Ocean Anal & Modelling Lab Bhubaneswar 752050 Odisha India|Indian Inst Technol Delhi Ctr Atmospher Sci Delhi India;

    Indian Inst Technol Bhubaneswar Sch Earth Ocean & Climate Sci Ocean Anal & Modelling Lab Bhubaneswar 752050 Odisha India;

    Indian Inst Technol Bhubaneswar Sch Earth Ocean & Climate Sci Ocean Anal & Modelling Lab Bhubaneswar 752050 Odisha India;

    Indian Inst Technol Bhubaneswar Sch Earth Ocean & Climate Sci Ocean Anal & Modelling Lab Bhubaneswar 752050 Odisha India;

    Natl Inst Ocean Technol Ocean Observat Syst Chennai Tamil Nadu India;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Bay of Bengal; OMNI buoys; Monsoon Intra-Seasonal Oscillations; Subsurface variability;

    机译：孟加拉湾;Omni浮标;季风内季节性振荡;地下变异性;

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