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<p>Typhoon Chaba was the most intense typhoon to strike western Guangdong since Typhoon Mujigae in 2015. According to the National Disaster Reduction Center of China, in the morning of July 7, 2022, over 1.5 million people in Guangdong, Guangxi, and Hainan were affected by Typhoon Chaba. The typhoon also caused the “<i>Fukui 001</i>” ship to be in distress in the waters near Yangjiang, Guangdong, on July 2, resulting in big casualties. Studies have indicated that wind field forecast for Typhoon Chaba was not accurate. To better simulate typhoon events and assess their impacts, we proposed the use of a model wind field (Fujita-Takahashi) integrated with the Copernicus Marine and Environmental Monitoring Service (CMEMS) data to reconstruct effectively the overall wind field of Typhoon Chaba. The simulation result aligns well with the observations, particularly at the Dashu Island Station, showing consistent trends in wind speed changes. However, certain limitations were noted. The model shows that the attenuation of wind speed is slower when typhoon neared land than that observed, indicating that the model has a high simulation accuracy for the ocean wind field, but may have deviations near coastal areas. The result is accurate for open sea but deviated for near land due to the land friction effect. Therefore, we recommend to adjust the model to improve the accuracy for near coasts.</p>

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Construction of the sea surface wind field of Typhoon Chaba based on wind field model and CMEMS data

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • Zijing Ou,
  • Tianyu Zhang,
  • Danchen Yan,
  • Yulin Wang,
  • Junping Zhang,
  • Hao Ning,
  • Cheng Chi,
  • Lengjian Chen

摘要

Typhoon Chaba was the most intense typhoon to strike western Guangdong since Typhoon Mujigae in 2015. According to the National Disaster Reduction Center of China, in the morning of July 7, 2022, over 1.5 million people in Guangdong, Guangxi, and Hainan were affected by Typhoon Chaba. The typhoon also caused the “Fukui 001” ship to be in distress in the waters near Yangjiang, Guangdong, on July 2, resulting in big casualties. Studies have indicated that wind field forecast for Typhoon Chaba was not accurate. To better simulate typhoon events and assess their impacts, we proposed the use of a model wind field (Fujita-Takahashi) integrated with the Copernicus Marine and Environmental Monitoring Service (CMEMS) data to reconstruct effectively the overall wind field of Typhoon Chaba. The simulation result aligns well with the observations, particularly at the Dashu Island Station, showing consistent trends in wind speed changes. However, certain limitations were noted. The model shows that the attenuation of wind speed is slower when typhoon neared land than that observed, indicating that the model has a high simulation accuracy for the ocean wind field, but may have deviations near coastal areas. The result is accurate for open sea but deviated for near land due to the land friction effect. Therefore, we recommend to adjust the model to improve the accuracy for near coasts.