Abstract:Focusing on the Bohai Rim region, an applicability assessment is carried out for the average wind product of the High Resolution China Meteorological Administration Land Data Assimilation System (HRCLDAS) and the 1-kilometer resolution product of the multi-source fused extreme wind real-time analysis (Analysis of Real Time, ART_1km) from 2022 to 2023. The assessment is based on the hourly wind observation data from 1,324 stations, including surface automatic stations, buoy stations, and offshore platforms.The results show that the monthly average absolute error of the HRCLDAS wind product is around 0.4 m/s. The errors of offshore stations are relatively large, and the phenomenon of wind speed underestimation is more obvious. However, the data quality in 2023 has been significantly improved. During the same period, the accuracy rate of the average wind direction is approximately between 75% and 90%. The situation where the accuracy rate of some stations is lower than 60% when considering light winds is related to the terrain. In terms of extreme wind, when the wind force is ≥ Grade 6, the stronger the wind observed at the stations, the greater the degree to which ART_1km underestimates (the actual wind speed). For winds of Grade 8 to 9, the daily mean absolute errors between the ART_1km values and the observed wind speeds at both non-independent and independent stations range from 2 to 4 m/s. For winds of Grade 10 to 11, this error reaches 4.5 to 5.5 m/s at non-independent stations.