Abstract:Focusing on the Bohai Rim region, the study carries out an applicability evaluation for the mean wind products of the High Resolution China Meteorological Administration Land Data Assimilation System (HRCLDAS) and the 1-km-resolution products of the multi-source fused extreme wind real-time analysis (Analysis of Real Time, ART_1km) from 2022 to 2023. The evaluation is based on the hourly wind observation data from 1 324 meteorological stations, including surface automatic stations, buoy stations and offshore platforms. The results are shown below. The monthly mean absolute error of the HRCLDAS wind products is around 0.4 m·s-1. The errors of offshore stations are relatively large, and the phenomenon of wind speed underestimation is more obvious, while the data quality in 2023 significantly improves. During the same period, the accuracy rate of the mean wind direction is between 75% and 90%, and the situation when the accuracy rate of some stations is lower than 60% during light winds is related to the terrain. In terms of extreme wind, when the wind is Beaufort wind force scale 6 or above, the stronger the wind observed at stations, the greater the degree to which ART_1km underestimates. For winds of Beaufort wind force scale 8-9, the daily mean absolute errors between the ART_1km values and wind speed observations at both non-independent and independent stations range from 2 to 4 m·s-1; for winds of Beaufort wind force scale 10-11, the errors reach 4.5-5.5 m·s-1 at non-independent stations.