The geostrophic drag law (GDL), which predicts the geostrophic drag coefficient and the cross‐isobaric angle, is relevant for meteorological applications such as wind energy. For conventionally neutral atmospheric boundary layers (CNBLs) capped by an inversion, the GDL coefficients A and B are affected by the inversion strength and latitude, expressible via the ratio of the Brunt–Väisälä frequency (N) to the Coriolis parameter (f). We present large‐eddy simulations (LES) covering a wider range of N/|f| than considered previously, and show that A and B obtained from carefully performed LES collapse to a single curve when plotted against N/|f|. This verifies the GDL for CNBLs over an extended range of N/|f| within LES. Additionally, in agreement with atmospheric observations, we show that using A = 1.9 and B = 4.4 accurately predicts the geostrophic drag coefficient in the limit of weak inversion strength or high latitude ( $N/|f|\lesssim 300$). However, due to the strong dependence of B on N/|f|, corresponding predictions for the cross‐isobaric angle are less accurate. As we find significant deviations between the LES results and the original parameterization of the GDL for CNBLs, we update the corresponding model coefficients.

中文翻译：

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重新探讨了常规中性大气边界层的地转阻力定律

预测地转阻力系数和等压角的地转阻力定律（GDL）与风能等气象应用相关。对于通常由反演覆盖的中性大气边界层（CNBL），GDL系数A和B受反演强度和纬度的影响，可通过Brunt–Väisälää频率（N）与科里奥利参数（f）之比表示。我们提出了涵盖更大范围N / |的大涡模拟（LES）。f | 比之前考虑的要好，并表明A和B当针对N / |绘制时，通过仔细执行的LES折叠获得的曲线变为一条曲线 f | 。这将验证N / |扩展范围内的CNBL的GDL。f | 在LES中。此外，与大气观测结果一致，我们表明使用A  = 1.9和B  = 4.4可以在反演强度弱或高纬度的极限内准确预测地转阻力系数（$ñ/|F|\lesssim 300$）。但是，由于B对N / |的强烈依赖性 f | ，等压交叉角的相应预测不太准确。当我们发现LES结果与CNBL的GDL原始参数化之间存在明显偏差时，我们更新了相应的模型系数。