Global spectrum mode initial field vertical layering arbitrary interval smooth encryption method

A technology of vertical layering and encryption method, applied in the direction of instruments, complex mathematical operations, data processing applications, etc., can solve problems such as low precision and increased calculation overhead, and achieve the effects of promoting analysis, stabilizing model integration, and high practical value

Pending Publication Date: 2022-03-22
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] After the new vertical layer is determined, if linear interpolation is used for data interpolation, it has a high calculation speed but its accuracy is not high. If cubic spline interpolation is used, the ca

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  • Global spectrum mode initial field vertical layering arbitrary interval smooth encryption method
  • Global spectrum mode initial field vertical layering arbitrary interval smooth encryption method
  • Global spectrum mode initial field vertical layering arbitrary interval smooth encryption method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any transformation or replacement based on the teaching of the present invention belongs to the protection scope of the present invention.

[0034] The invention uses an exponential stretching algorithm to calculate the air pressure coordinates of the newly added layers for a given interpolation interval and increased layer numbers, and then smooths both ends.

[0035] like figure 1 As shown, a global spectrum mode initial field vertical layer arbitrary interval smoothing encryption technology of the present invention is divided into the following steps:

[0036] S1. Using the exponential catch-up method to determine the pressure position of the newly added stratification in a given area.

[0037] Given air pressure interval p t ,p b , and the total number of newly added layers n (including the upper and lower bound...

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Abstract

The invention discloses a global spectrum mode initial field vertical layering arbitrary interval smooth encryption technology, which relates to the field of numerical weather forecast, and adopts an exponential stretching algorithm to determine the number of mixed coordinate systems of newly added vertical layers according to a given air pressure interval needing to be encrypted and the number of the newly added vertical layers; the smoothness between the newly added vertical interlayer spacing and the port is ensured at the boundary end through second-order function smoothing; and after the vertical coordinates of the newly added layer are determined, cubic spline interpolation is carried out on the global spectrum-lattice point data from the original layer to a new layer, and in the cubic spline interpolation process, the interpolation speed is accelerated by using a catch-up method fast algorithm. According to the method, a new initial field for vertically and uniformly encrypting a specified area is finally provided, and the field can be suitable for a global spectrum mode and can stabilize integration; a vertical layer is additionally arranged above the top of the mode troposphere, analysis of upward propagation of gravity waves can be promoted, and the problem that the stratosphere is cold is solved.

Description

technical field [0001] The invention belongs to the technical field of numerical weather forecasting, and in particular relates to a method for smoothing and encrypting arbitrary intervals in the vertical layer of the initial field of a global spectrum model. Background technique [0002] At present, the vertical layer of the global spectrum model generally adopts 137 layers, which is close to the surface area at the bottom of the model. Since human activities are basically concentrated in this area, the layer is dense, while the layer is sparse at the top of the model in the stratosphere and above. Scientific research has shown that too sparse a layering of the stratosphere will lead to insufficient resolution of the upward propagation of gravity waves, resulting in warmer temperatures in the lower stratosphere and cooler top stratosphere. The above-mentioned colder problem at the top of the stratosphere can be effectively alleviated by local densification of the vertical s...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/26G06F17/11G06F17/16
CPCG06Q10/04G06Q50/26G06F17/11G06F17/16
Inventor 杨锦辉吴建平任开军张卫民银福康彭军阳向荣孙迪夫余意
Owner NAT UNIV OF DEFENSE TECH
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