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<p>The WISSDOM (Wind Synthesis System using Doppler Measurements) synthesis scheme was developed to derive high-resolution 3-dimensional (3D) winds under clear-air conditions. From this variational-based scheme, detailed wind information was obtained from scanning Doppler lidars, automatic weather stations (AWSs), sounding observations, and local reanalysis datasets (LDAPS, Local Data Assimilation and Prediction System), which were utilized as constraints to minimize the cost function. The objective of this study is to evaluate the performance and accuracy of derived 3D winds from this modified scheme. A strong wind event was selected to demonstrate its performance over complex terrain in Pyeongchang, South Korea. The size of the test domain is <span class="inline-formula">12×12</span> km<span class="inline-formula">²</span> extended up to 3 km a.m.s.l. (above mean sea level) height with a remarkably high horizontal and vertical resolution of 50 m. The derived winds reveal that reasonable patterns were explored from a control run, as they have significant similarity with the sounding observations. The results of intercomparisons show that the correlation coefficients between derived horizontal winds and sounding observations are 0.97 and 0.87 for <span class="inline-formula"><i>u</i></span>- and <span class="inline-formula"><i>v</i></span>-component winds, respectively, and the averaged bias (root mean square deviation, RMSD) of horizontal winds is between <span class="inline-formula">−0.78</span> and 0.09 (1.77 and 1.65) m s<span class="inline-formula">⁻¹</span>. The correlation coefficients between WISSDOM-derived winds and lidar QVP (quasi-vertical profile) are 0.84 and 0.35 for <span class="inline-formula"><i>u</i></span>- and <span class="inline-formula"><i>v</i></span>-component winds, respectively, and the averaged bias (RMSD) of horizontal winds is between 2.83 and 2.26 (3.69 and 2.92) m s<span class="inline-formula">⁻¹</span>. The statistical errors also reveal a satisfying performance of the retrieved 3D winds; the median values of wind directions are <span class="inline-formula">−5</span> to 5 (0 to 2.5)<span class="inline-formula">^∘</span>, the wind speed is approximately <span class="inline-formula">−1</span> to 3 m s<span class="inline-formula">⁻¹</span> (<span class="inline-formula">−1</span> to 0.5 m s<span class="inline-formula">⁻¹</span>), and the vertical velocity is <span class="inline-formula">−0.2</span> to 0.6 m s<span class="inline-formula">⁻¹</span> compared with the lidar QVP (sounding observations). A series of sensitivity tests with different weighting coefficients, radius of influence (RI) in interpolation, and various combination of different datasets were also performed. The results indicate that the present setting of the control run is the optimal reference to WISSDOM synthesis in this event and will help verify the impacts against various scenarios and observational references in this area.</p>