A ground-to-ground lightning data assimilation method and system for strong convective weather forecast
A technology of weather forecasting and strong convection, applied in the field of data assimilation, can solve the problem of low accuracy of convective system forecasting, achieve the effects of improving nowcasting, improving conversion models, and increasing accuracy
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[0053] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0054] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0055] Embodiment of data assimilation method of ground lightning:
[0056] Step S1: Obtain the historical data of ground-to-ground lightning in 2014-2018, and perform quality control, namely:
[0057] Step S2: Obtain the three-dimensional radar echo mosaic data of the SWAN (Severe Weather Automatic Nowcast) system in 2014-2018;
[0058] Step S3: Use the ground lightning data and the vertical column maximum proxy radar echo of the three-dimensional radar echo mosaic data, and use the S-curve function y=exp(b+a / x) to carry out the calculation for mountainous areas (altitude greater than 1000 meters) and plains Non-linear fitting, to obtain a new statisti...
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