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Indian Ocean dipole index prediction method

A prediction method, dipole technology, applied in the field of calculation of marine environmental parameters, can solve problems such as climate anomalies, and achieve the effect of improving the correlation coefficient

Pending Publication Date: 2022-03-18
OCEAN UNIV OF CHINA
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Problems solved by technology

[0004] Although the IOD only manifests as an anomaly of sea temperature in the Indian Ocean, the interaction between the ocean and the atmosphere will have a greater impact, resulting in climate anomalies in areas around the Indian Ocean, central South America, the southern tip of Africa, southeastern Australia, and Northeast Asia.

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[0035] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to protection domain of the present invention.

[0036] In the early 21st century, some scientists studied the long-range impact of IOD on the climate of East Asia, which mainly transmitted the abnormal signal of IOD to East Asia in the form of wave trains, which in turn caused the temperature anomalies in southern China and Japan. Another scientist compared the difference in precipitation in southern China under the positive and negative phases of IOD, and found that the development stage of the positive phase of IOD is that the anticyclonic circul...

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Abstract

The invention relates to the technical field of marine environment parameter calculation, in particular to an Indian Ocean dipole index prediction method. The invention provides an Indian Ocean dipole index prediction method, which comprises the following steps of: obtaining data characteristics at least including wind fields around a specified sea area and ocean-atmosphere information to form a data set for training; inputting the data set into a preset ConvLSTM model for training so as to obtain a prediction model capable of predicting the sea surface temperature of the specified sea area; using the prediction model to obtain the sea surface temperature of the east and west regions (90 DEG E to 110 DEG E, 10 DEG S to 0 DEG C) and the west region (50 DEG E to 70 DEG E, 10 DEG S to 10 DEG N) of the Indian Ocean so as to obtain the sea surface temperature of the east and west regions in a specific time period in the future; and subtracting the average sea surface temperature of the west region from the average sea surface temperature of the east region to obtain the Indian Ocean dipole index.

Description

technical field [0001] The invention relates to the technical field of ocean environment parameter calculation, in particular to a method for predicting Indian Ocean dipole index. Background technique [0002] The dipole phenomenon (IOD) is a large-scale physical ocean phenomenon that occurs in the Indian Ocean basin, and plays an important role in predicting the El Niño-Southern Oscillation in the tropical Pacific Ocean. Predicting the occurrence of IOD is of great significance to the study of climate change and other major ocean phenomena. [0003] The IOD is one of the important systems affecting the climate anomalies in Asia. Some scientists proposed the concept of IOD in 1999, which subtracted the average sea surface temperature in the western Indian Ocean (50°E–70°E, 10°S–10°N) region from the eastern (90°E–110°E, 10°E °S-0°) region mean sea surface temperature is defined as the IOD index. IOD has a significant seasonal phase locking feature, usually begins to devel...

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Application Information

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IPC IPC(8): G06Q10/04G06N3/04G06N3/08
CPCG06Q10/04G06N3/08G06N3/044
Inventor 冯源李晨孙天颖洪锋刘超田苗苗李首成
Owner OCEAN UNIV OF CHINA
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