The application belongs to the technical field of
data analysis and
processing, and specifically discloses a
typhoon track trend change confirmation method,
system, device and medium. The method obtains the sea
surface pressure disturbance field, the
sea surface wind field and the diagnostic field in the sea basin scale. Based on the multi-field joint determination, the
typhoon track and the influence area in the
climate model data are determined. Further iteration is performed to determine the
typhoon track and the influence area
data set. Based on the
modal decomposition and by using the influence area
data set and the TDF method, the typhoon trend change is determined. The method can comprehensively utilize the forecast model data wind pressure
field data to jointly research and judge, effectively determine the typhoon center position and the typhoon track, and objectively and reliably determine the typhoon influence range by the sea
surface pressure disturbance field, so that the influence of the artificial factor introduced by the artificial given area weight
influence factor in the TDF method can be reduced. The typhoon change trend is determined by using the
principal component analysis method on the objective typhoon influence range, and the
operability is high.