There will be heavy to huge waves in the coastal waters of Fujian, and moderate to large waves in the coastal waters of Shanghai, Zhejiang, eastern Guangdong, eastern and southern Hainan, and the National Ocean Forecast Observatory will issue a yellow alert for waves according to the "Marine Disaster Emergency Plan".
Affected by the cold air, it is expected that from the night of December 20 to the day of the 21st, there will be 45 to 6 meters of huge waves to rough wave areas, the East China Sea, the waters near the Diaoyu Islands will appear 3 to 45 meters of high waves to high wave area, the wave warning level in offshore waters is yellow;There will be 3 to 4 in the coastal waters of Fujian4 meters of high waves to huge waves, the wave warning level of the coastal waters is yellow, Shanghai, Zhejiang, eastern Guangdong, eastern Hainan, southern coastal waters will appear 2 to 3 meters of medium to large waves, the coastal waters wave warning level is blue. Please pay attention to the safety of ships operating in the above-mentioned sea areas, and all relevant coastal units should take measures to prevent waves and avoid waves in advance.
Recently, the Ministry of Natural Resources organized a limited volume of the third-generation wave spectrum model ("Mazu Wave") expert review meeting in Beijing, 11 well-known experts in the field of ocean and atmosphere on the "Mazu Wave" model research and development and operational trial operation and third-party inspection and evaluation report reviewed and commented, that "Mazu Wave" is China's independent research and development of the wave numerical prediction model, the overall performance has reached the international advanced level of similar models, it is recommended to put into formal operational operation.
The National Marine Environmental Forecasting Center and the Ocean University of China as the undertaking unit have set up an advantageous R&D team to focus on the outstanding problems of wave numerical prediction relying heavily on foreign models, lack of independent technology, and long calculation time. The "Mazu Waves" mode includes modules such as calculation grid generation, numerical calculation, post-processing and product production, and accuracy inspection, and the system has complete functions, which can provide global and regional wave numerical prediction business products for the next 7 days. Compared with the existing commercial wave numerical prediction model, the calculation energy efficiency and forecast accuracy are significantly improved, which meets the requirements of commercial operation.
Compared with similar international advanced models, "Mazu Waves" has the following unique advantages: first, advanced hexagonal grid and dynamic framework, which can obtain high-precision forecast results in key encrypted sea areas and high latitude sea areas of the North and South Poles;The second is the efficient convolutional wave nonlinear action term algorithm, which improves its computational efficiency by one-thirdThe third is excellent massively parallel scalability, which can carry out ultra-large-scale parallel computing with 130,000 CPU coresFourth, the leading GPU parallel acceleration capability, the computing power of a single GPU server is equivalent to 90 CPU servers, and the computing energy consumption is reduced by about 88%.
The successful research and development of the "Mazu Ocean Wave" model is another landmark achievement of the marine forecasting "chip" project after the "Mazu Ocean Current". At present, many universities at home and abroad have carried out relevant research and application work based on "Mazu Ocean Wave". In the future, the forecast center will continue to take the independent research and development route of high-level scientific and technological self-reliance and self-reliance, guided by national strategic needs, continuously improve the numerical prediction capability of "Mazu Ocean Wave" global regional integration, develop an independent data assimilation system based on domestic satellites, create a good application ecology, provide public service products with important international influence, and provide solid support for the construction of a marine community with a shared future.