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Near-surface gale calculation method

A calculation method and near-surface technology, applied in the field of atmospheric science research, can solve problems such as inability to effectively calculate near-surface gale

Inactive Publication Date: 2015-11-18
江苏省气象科学研究所 +1
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Problems solved by technology

Its primary technical purpose is to solve the problem of ineffective calculation of near-surface gale in areas lacking automatic weather stations

Method used

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Embodiment Construction

[0039] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0040] The calculation method flow chart of the present invention's near ground gale is as follows figure 1 Shown, realization of the present invention mainly comprises the following steps:

[0041] Step 1, see figure 2, using the historical observation data of the iron tower and the wind profile radar for many years, the statistics of the monthly and hourly distribution of the wind speed detected by the iron tower and the wind profile radar with the height, and fitting the wind speed curve at each period, as the calculation of the first wind speed interval of the near-surface gale According to the basis, the 10-200m wind speed profile is statistically fitted using the iron tower data, and the 200-1000m wind speed profile is statistically fitted using the wind profile radar. Choose a cubic equation in one variable as the curve-fitting function:

[0042]...

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Abstract

The invention discloses a near-surface gale calculation method. The method comprises the steps: firstly carrying out the statistics of the distribution condition of all detection wind speeds in each month hour after hour along with the height through employing the historical observation data of an iron tower and a wind profile radar, carrying out the linear fitting of the distribution trend of the wind speeds along with the height through the least square method, obtaining a distribution curve formula of the wind speeds in each month hour after hour along with the height, and enabling the distribution curve formula to serve as a wind speed trench change basis for calculating near-surface gale; secondly determining a radial wind speed height measured by a radar at an estimation place through combining with the geographic information of a Doppler weather radar according to the geographic information of the estimation place; finally selecting a specific wind speed distribution curve formula along with the height through combining with the radial speed field of the Doppler weather radar after dealiasing according to the estimation time, and providing the wind speed information at different layer near the ground surface. The method can iron out the defect that the distance among automatic stations is larger, meets the demands of different users for timeliness estimation of disasters generated by flowing ground gale, and fills a gap of near-surface gale monitoring estimation.

Description

technical field [0001] The invention relates to a method for calculating near-surface gale based on iron tower and wind profile radar data combined with Doppler weather radar, especially a method for calculating near-surface gale aimed at linear convective gale, which belongs to atmospheric science (remote sensing) data analysis) field of study. Background technique [0002] The atmospheric boundary layer is most closely related to human activities, and the change of wind speed has a great impact on human production activities, especially convective winds, which are very destructive to buildings and towers. The change of wind speed in the atmosphere is affected by many factors, and has obvious seasonal and diurnal changes. Therefore, it is very meaningful to study the change of wind speed in the boundary layer, especially near the surface layer. [0003] The new-generation Doppler radar has a very high spatial-temporal resolution, with a time resolution of 6 minutes and a ...

Claims

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Application Information

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IPC IPC(8): G01S13/95
CPCG01S13/951Y02A90/10
Inventor 孙康远郑媛媛杨吉罗晓春周晓慕瑞琪
Owner 江苏省气象科学研究所
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