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Lightning data assimilation method based on atmospheric stability fitting correction temperature and humidity profile

A technology of stability and atmospheric temperature, applied in climate sustainability, design optimization/simulation, instruments, etc., can solve the problems that cannot make up for the low frequency of sounding data and the profile that cannot reflect the atmospheric temperature and humidity well and other issues to achieve the effect of improving forecasting performance and improving forecasting performance

Pending Publication Date: 2022-05-27
STATE GRID ANHUI ELECTRIC POWER +2
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Problems solved by technology

But in general, the assimilation of lightning data is still in the research and experiment stage, and it cannot reflect the temperature and humidity profiles of the atmosphere well, and it cannot make up for the blankness of the upper water vapor content information of the ground meteorological stations and the frequency deviation of the sounding data. less timely defects

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  • Lightning data assimilation method based on atmospheric stability fitting correction temperature and humidity profile
  • Lightning data assimilation method based on atmospheric stability fitting correction temperature and humidity profile

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings:

[0033] The lightning data assimilation method for correcting temperature and humidity profiles based on atmospheric stability fitting in this embodiment includes the following steps:

[0034] S1: Lightning frequency on the network point in read mode;

[0035] First, determine whether lightning occurs on the grid points of the mesoscale numerical model, and if so, the lightning frequency obtained from the lightning observation network.

[0036] S2: Determine whether there is lightning on the mode network point;

[0037] Determine whether there is lightning in the range between the spatial coordinates (i-1, j-1) to (i+1, j+1); among them, if there is, the grid point (i, j) indicates that there is lightning, if If there is lightning, go to step S3, otherwise return to step S1.

[0038] S3: Use the lightning frequency to obtain the stability of the modified atmosphere; ...

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Abstract

The invention relates to a lightning data assimilation method for fitting and correcting a temperature and humidity profile based on atmospheric stability. The lightning data assimilation method comprises the following steps: (1) reading a lightning frequency on a mode network point; (2) judging whether lightning occurs on the mode network points, if so, executing the step (3), and if not, returning to the step (1); (3) obtaining modified atmosphere stability by using the lightning frequency; (4) obtaining an atmospheric temperature profile and an atmospheric humidity profile by using stability inversion, and adjusting the atmospheric temperature profile and the atmospheric humidity profile; and (5) outputting the adjusted relative humidity, and converting a non-littler format. According to the method, the atmosphere stability characteristic in a numerical mode can be greatly increased and improved, the profile of the temperature and humidity of the atmosphere can be better reflected, high-altitude temperature and humidity detection information is greatly increased, and the blank of high-rise moisture content information of a ground meteorological station and the defect that sounding data is less in frequency and not timely are filled up.

Description

technical field [0001] The invention relates to the field of fan control, in particular to a lightning data assimilation method based on atmospheric stability fitting and correcting temperature and humidity profiles. Background technique [0002] Numerical model forecasting is an important basis for modern weather forecasting. Numerical weather forecasting can be regarded as the initial value problem of mathematical physics. Therefore, a suitable initial field is extremely important for numerical weather forecasting. The data assimilation technology is to process the meteorological observation data to make it enter the numerical model to become the initial value field, and to ensure that these data have reasonable stability, and the direct relationship between different data is in line with the constraints of atmospheric motion and state equations. , forming self-consistency and coordination. Data assimilation is an important part of numerical weather forecasting, and it is...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06F30/20G06Q50/26
CPCG06Q10/04G06F30/20G06Q50/26Y02A90/10
Inventor 田宏强张炜吴迪刘辉彭伟王京景丁超杨惜春字俣丞费晓虎
Owner STATE GRID ANHUI ELECTRIC POWER
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