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Resolution Dependence of Singular Vectors Computed for Typhoon SINLAKU

机译：台风“ SINLAKU”的奇异矢量的分辨率相关性

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References(20) Cited-By(3) Supplementary materials(1) To investigate the resolution dependence of singular vector (SV) for Typhoon SINLAKU in the recurvature stage, SVs were computed using the Japan Meteorological Agency (JMA) tangent linear and adjoint (hereafter TL/AD) model at three different resolutions of TL63L601, TL95L60 and TL159L60.The results show that depending on the horizontal resolution, SVs have their own peak energy height and spectral shifts from the initial to final time due to the difference of detectable influences from mid-latitude troughs and tropical cyclone (TC) surrounding flows. On the other hand, common features of wind fields are found among the three SV structures. As for the SV using the TL/AD model at a TL159L60 resolution, the 48 hour optimization time interval (OTI) provides a larger influence from mid-latitude troughs with higher peak energy height than in the case with 24 hour OTI.Those results suggest that in the present case of a recurving TC using dry SV with a dry total energy (TE) norm, a certain degree of resolution in the TL/AD model is required to effectively detect sensitive areas around the TC because the resolution can change the energy balance among the mechanisms contributing to the SV structure.1 We use T as an abbreviation for triangular truncation with Gaussian grid, TL for triangular truncation with linear Gaussian grid and L for vertical layers. Therefore, TL63L60 denotes spectral triangular truncation at 63 wave numbers with linear Gaussian grid and 60 vertical layers.
机译：参考文献（20）被引用的文献（3）补充材料（1）为了研究反曲率阶段奇异矢量（SV）对台风SINLAKU的分辨率依赖性，使用日本气象厅（JMA）切线线性和伴随（结果显示，根据水平分辨率，由于可检测影响的差异，SV具有不同的峰值能量高度以及从初始到最终时间的光谱偏移，这取决于TL63L601，TL95L60和TL159L60的三种不同分辨率。来自中纬度槽和热带气旋（TC）周围的气流。另一方面，在三个SV结构中发现了风场的共同特征。对于使用TL159L60分辨率的TL / AD模型的SV，与24小时OTI相比，48小时优化时间间隔（OTI）对峰值能量高度更高的中纬度谷的影响更大。当前在使用干SV且具有干总能量（TE）范数的反TC的情况下，在TL / AD模型中需要一定程度的分辨率才能有效检测TC周围的敏感区域，因为分辨率会改变能量1我们用T代表高斯网格的三角截断，用TL代表线性高斯网格的三角截断，用L代表垂直层。因此，TL63L60表示在63个波数下具有线性高斯网格和60个垂直层的频谱三角截断。

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