Seawater temperature field prediction method based on improved EOF

A forecasting method and temperature field technology, applied in forecasting, complex mathematical operations, data processing applications, etc., can solve problems such as declining forecasting ability, low reliability of forecasting results, and large deviations in actual conditions

Pending Publication Date: 2020-10-23
青岛哈船海智科技有限公司
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Problems solved by technology

[0004] The temperature forecast technology represented by numerical forecast has high precision and the physical model is relatively mature. However, with the increase of

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  • Seawater temperature field prediction method based on improved EOF
  • Seawater temperature field prediction method based on improved EOF
  • Seawater temperature field prediction method based on improved EOF

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Embodiment Construction

[0058] The purpose of the present invention is to solve the problem of ocean temperature field forecasting. The temperature forecasting technology represented by numerical forecasting has high precision and the physical model is relatively mature. However, with the increase of the forecasting time, the forecasting ability drops sharply, and the forecasting result after 7 days can be The reliability is low, and there is a large deviation from the actual situation. However, the research on extended-period forecasting has not yet achieved breakthroughs. Therefore, historical observations and historical data are used, and the time-space orthogonal empirical decomposition method is applied to find out the characteristics of historical data, and the parameters are obtained by fitting methods to realize the forecasting of marine elements. It is a means of trying to solve long-term ocean element forecasting. In the present invention, on the basis of the time-space empirical orthogonal...

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Abstract

The invention relates to a seawater temperature field prediction method based on improved EOF, and the seawater temperature field prediction method comprises the following steps: reconstructing historical data; extracting geographic information of the current sea area to form a mask file; obtaining spatial change characteristic parameters through spatial-temporal orthogonal empirical decomposition; fitting a time coefficient; forecasting the temperature in the future N days; and performing regional temperature field reconstruction. According to the seawater temperature field prediction method,on the basis of a traditional spatio-temporal empirical orthogonal decomposition method, ocean elements are reconstructed in time and space, and a good prediction result is obtained. Through multipleverifications, the seawater temperature field prediction method can achieve the long-time prediction of the temperature field. In engineering application, computing resources are saved, and practicability is high, and future ocean temperature forecasting information can be provided for ship navigation and other offshore platforms.

Description

technical field [0001] The invention relates to the field of marine environment protection research, based on historical data, using statistics and probability theory methods, to realize the statistical analysis and forecasting method of marine element forecasting. [0002] Use historical data to find out the relationship between historical data and current data, and then realize the statistical analysis and forecasting method of ocean element forecasting, and predict the temperature information of the target sea area in the next few days. This algorithm has high precision, long forecast time, and wide coverage of the effective area, which can provide future seawater temperature information for marine security. Background technique [0003] Ocean elements are variables that vary significantly in time and space. Using the definition of principal components, we can use the interrelationships among multiple variables to construct a few new variables that can not only comprehen...

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Application Information

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IPC IPC(8): G06Q10/04G06F17/16G06F17/12G06F17/15
CPCG06F17/12G06F17/15G06F17/16G06Q10/04
Inventor 刘厂徐道欢张振兴靳光强
Owner 青岛哈船海智科技有限公司
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