多种再分析风产品在环渤海地区的适应性评估
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1.沧州市气象局;2.河北省气象局;3.沧州市港航管理局

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基金项目:

环渤海区域科技协同创新基金项目(QYXM202201),


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Adaptability Evaluation of Multiple Reanalysis Wind Products in the Bohai Rim Region
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Affiliation:

1.Cangzhou Meteorological Bureau,Cangzhou;2.Hebei Meteorological Bureau,Shijiazhuang;3.Cangzhou Port and Waterway Administration Bureau,Cangzhou

Fund Project:

Fund for Scientific and Technological Collaborative Innovation in the Bohai Rim Region (QYXM202201)

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    摘要:

    聚焦于环渤海地区,以地面自动站、浮标站及海上平台等 1324 个站的逐小时风观测数据为基准,对2022—2023年中国气象局陆面数据同化系统(High Resolution China Meteorological Administration Land Data Assimilation System,HRCLDAS)平均风产品和多源融合极大风实况分析1公里分辨率产品(Analysis of Real Time,ART_1km)展开适用性评估。结果显示: HRCLDAS风产品月平均绝对误差在0.4 m/s左右,海上站点的误差偏大,风速低估现象更为明显,但2023年数据质量有了显著提升。同期,平均风向的准确率约在75%~90%,考虑小风时部分站点准确率低于60%的情况与地形有关。在极大风方面,当风力≥6级时,站点观测的风力越大,ART_1km偏小程度越高。8~9 级风时,非独立站点和独立站点的ART_1km 值与实测风速的日平均绝对误差在2~4 m/s;10~11 级风时,非独立站点该误差达 4.5~5.5 m/s。

    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.

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  • 收稿日期:2025-02-16
  • 最后修改日期:2025-07-09
  • 录用日期:2025-07-11
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