Method for predicting typhoon wind speed by using stratospheric gravitational waves

Abstract

The invention discloses a method for predicting the typhoon wind speed by using stratosphere gravity waves. The method comprises the following steps: S100, collecting data and processing the data; S200, with a Rayleigh laser radar, detecting an area to be predicted, and acquiring Rayleigh laser radar echoes; S300, drawing a stratospheric atmospheric density vertical profile, a temperature verticalprofile, a stratospheric latitudinal wind vertical profile and a stratospheric longitudinal wind vertical profile; S400, acquiring a disturbance profile of the area to be predicted; S500, respectively calculating the horizontal wavelength, frequency, effective kinetic energy and effective potential energy of the gravity wave of the area to be predicted; and S600, predicting the typhoon wind speedof the area to be predicted. According to the method for predicting the typhoon wind speed by using the stratospheric gravitational wave, the frequency, the horizontal wavelength, the effective kinetic energy and the effective potential energy of the stratospheric gravitational wave are creatively proposed as main factors influencing the typhoon wind speed by collecting and analyzing the global over-the-year typhoon data.

Description

technical field [0001] The invention relates to a prediction method in the field of meteorology, in particular to a method for predicting typhoon wind speed by using stratospheric gravity waves. Background technique [0002] The stratosphere, also known as the stratosphere, is the area between the troposphere and the middle layer. It is named because the air flow is mainly horizontal and there is little turbulence. The main feature of the temperature distribution is that the bottom is cold and the top is hot. The coldest area is the At the junction of the tropopause, the temperature increases with altitude. In recent years, with the development of remote sensing technology and satellite technology, stratospheric observation technology has been greatly developed. Lidar can obtain local atmospheric parameters with high temporal and spatial resolution. Limb detection technology and occultation technology have realized global The observations in the stratosphere region provide ...

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Problems solved by technology

[0004] In the research of extreme weather such as Typhoon Maisa and Typhoon Meihua, the inventor found that the typhoon wind speed has an inseparable relationship with gravity waves. However, in the prior art, there are few studies on the relationship between typhoon wind speed and gravity waves. There is no effective method to predict typhoon wind speed using gravity wave parameters

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