Seawater space temperature profile reconstruction method and system
A technology of temperature profile and space, which is applied in the field of seawater space temperature profile reconstruction, can solve the problems of low space measurement efficiency, high measurement cost, and limited coverage, and achieve high space measurement efficiency, strong environmental adaptability, and low measurement cost. low effect
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Embodiment 1
[0073] like figure 1 As shown, Embodiment 1 of the present invention provides a seawater space temperature profile reconstruction method.
[0074] The present invention adopts the technical scheme of the following steps:
[0075] First, principal component analysis (PCA) is performed on the historical data set to obtain the empirical orthogonal function (EOF). Principal component analysis is an effective method to analyze the matrix data and extract the main feature quantities. The obtained empirical orthogonal function can represent the temperature profile that changes with space or time, and realizes the formation of a matrix for the temperature profiles at different times or locations. dimensionality reduction.
[0076] The historical temperature profiles of the experimental sea area or similar locations are selected as samples, and the samples can be integrated from the data obtained by various measurement methods such as temperature chain, CTD or XBT. The first step is...
Embodiment 2
[0096]Based on the method of Embodiment 1, Embodiment 2 of the present invention proposes a reconstruction system of seawater space temperature profile, the system includes: a principal component analysis module, a coefficient calculation module, an optimal drag measurement depth value acquisition module, a measurement value acquisition module, temperature profile spatial distribution acquisition module; among them,
[0097] The principal component analysis module is used to perform principal component analysis on the temperature profile data in the pre-established historical data set to obtain an average temperature profile and an empirical orthogonal function;
[0098] The coefficient calculation module is used for selecting several depth values, and according to the temperature profile data of the selected depth values, combined with the average temperature profile and the empirical orthogonal function, to calculate the coefficient of the K-order empirical orthogonal functio...
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