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一次暴雨激发平流层重力波的卫星观测与数值模拟

孙睿 姚志刚 韩志刚 赵增亮 崔新东 严卫

孙睿, 姚志刚, 韩志刚, 赵增亮, 崔新东, 严卫. 一次暴雨激发平流层重力波的卫星观测与数值模拟[J]. 空间科学学报, 2018, 38(4): 469-481. doi: 10.11728/cjss2018.04.469
引用本文: 孙睿, 姚志刚, 韩志刚, 赵增亮, 崔新东, 严卫. 一次暴雨激发平流层重力波的卫星观测与数值模拟[J]. 空间科学学报, 2018, 38(4): 469-481. doi: 10.11728/cjss2018.04.469
SUN Rui, YAO Zhigang, HAN Zhigang, ZHAO Zengliang, CUI Xindong, YAN Wei. Numerical Simulation of Stratospheric Gravity Waves Induced by a Rainstorm[J]. Journal of Space Science, 2018, 38(4): 469-481. doi: 10.11728/cjss2018.04.469
Citation: SUN Rui, YAO Zhigang, HAN Zhigang, ZHAO Zengliang, CUI Xindong, YAN Wei. Numerical Simulation of Stratospheric Gravity Waves Induced by a Rainstorm[J]. Journal of Space Science, 2018, 38(4): 469-481. doi: 10.11728/cjss2018.04.469

一次暴雨激发平流层重力波的卫星观测与数值模拟

doi: 10.11728/cjss2018.04.469
基金项目: 

国家自然科学基金项目(41575031)和中国博士后基金项目(2015M580124)共同资助

详细信息
    作者简介:

    孙睿,E-mail:429661225@qq.com

  • 中图分类号: P403

Numerical Simulation of Stratospheric Gravity Waves Induced by a Rainstorm

  • 摘要: 针对卫星Aqua/AIRS观测到的与2011年7月25日山东省乳山市特大暴雨相伴的一次平流层重力波过程,利用中尺度数值模式WRF进行暴雨诱发平流层重力波的数值模拟.对模式输出的垂直速度场和温度扰动场的分析表明,暴雨在平流层内的弧状波结构主要集中在降水云系东侧,水平影响范围大于1000km,且随着高度的增加,圆弧状结构趋于闭合,波动能量显著增强.此外,对垂直速度剖面结构分析表明,受高空东风和风切变的影响,重力波在上传过程中逆着背景风场向东传输,不同高度波动形态各异.基于快速傅里叶变换(FFT)的功率谱分析结果表明,此次暴雨激发的平流层重力波在35km高度的周期为7~20h,水平波长约为1000km,垂直波长为5~10km.通过分析动量通量的垂直输送,定量反映出重力波上传过程中的动力学变化特征.

     

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出版历程
  • 收稿日期:  2017-09-04
  • 修回日期:  2018-03-05
  • 刊出日期:  2018-07-15

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