何源首, 李建伟, 安伟, 等, 2024. 台风“艾克”(2008)的海面风场模型研究[J]. 海岸工程, 43(2): 1-12. doi: 10.12362/j.issn.1002-3682.20240308002.
    引用本文: 何源首, 李建伟, 安伟, 等, 2024. 台风“艾克”(2008)的海面风场模型研究[J]. 海岸工程, 43(2): 1-12. doi: 10.12362/j.issn.1002-3682.20240308002.
    HE Y S, Li J W, AN W, et al, 2024. Research on sea surface wind field model of Hurricane “IKE” (2008)[J]. Coastal Engineering, 43(2): 1-12. doi: 10.12362/j.issn.1002-3682.20240308002
    Citation: HE Y S, Li J W, AN W, et al, 2024. Research on sea surface wind field model of Hurricane “IKE” (2008)[J]. Coastal Engineering, 43(2): 1-12. doi: 10.12362/j.issn.1002-3682.20240308002

    台风“艾克”(2008)的海面风场模型研究

    Research on Sea Surface Wind Field Model of Hurricane “IKE” (2008)

    • 摘要: 台风风场模拟的准确性对台风风场后报工作具有重要意义,目前通过参数模型构建台风边界层的海面风场是较快速且常用的方法之一。以2008年侵入墨西哥湾的大西洋第8号台风“艾克”为例,选取多种参数模型对比研究台风风场模拟的效果。实验结果表明,台风风场模型的选择对台风风场模拟效果具有显著影响。采用Jelesnianski-1风廓线模型即可较好地再现“艾克”台风风场的时空特征;此外,具有可变系数的Holland等气压模型风场和Miller等风廓线模型风场则具有较好的适用性,通过调整可变系数使得参数风场的风廓线贴合实际台风案例。整体而言,基于理想模型的参数风场能基本反映台风核心区域的海面风场特征,但对外围背景风场模拟效果不甚理想,而分析及再分析风场数据则能较好地反映台风外围的背景风场,因此采用参数风场与分析及再分析风场融合的方式构建台风风场,可显著提高台风“艾克风场的数值模拟效果。

       

      Abstract: The error of sea surface wind derived from models is vital for hurricane wind hindcast. Currently, reconstructing sea surface wind field in the boundary layer through mathematic models is a fast and commonly used method. Taking “IKE”, the 8th Atlantic hurricane that invaded the Gulf of Mexico in 2008, as an example, this study compared the surface wind field of “IKE” derived from 8 kinds of widely used mathmatic models, and the results showed that different models performance diversely. The Jelesnianski-1 model can effectively represent the spatio-temporal characteristics of Typhoon Ike's wind field, in addition, models (e.g. Holland model and Miller model) with variable coefficients also showed high applicability, the results of which can be in line with the actual typhoon cases by adjusting the value of coefficients, Overall, sea surface wind of hurricane reconstructed by mathmatic models can basically reflect the characteristics of the wind field in the core area of the hurricane, but failed in giving accurate background wind field in the outer area; while the analysis or reanalysis wind field data can provide precise wind field in the outer area of hurricane. Therefore, integration of wind field data derived from mathmatic models and analysis or reanalysis wind field can significantly reduce the error of sea surface wind simulation of hurricane.

       

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