Method, device and system for determining observation sensitive area with high influence weather forecast precision

The invention discloses a method, a device and a system for determining an observation sensitive area influencing numerical weather forecast precision and a computer readable storage medium. The method comprises the steps of determining a target area range and a date; the method comprises the following steps: acquiring a numerical value of a business analysis field of a CMA-GFS4DVAR (global four-dimensional variational data assimilation numerical forecasting system); interpolating the numerical value of the service analysis field to a corresponding resolution for calculating a singular vector SVs; the singular vector SVs is calculated and generated; generating a sensitive area according to the linear combination of the SVs; and drawing a display image of the sensitive area. Through the mode, on the basis of a meteorological observation network system in the prior art, the weather prediction precision can be improved, and a high-precision weather prediction effect is provided for a high-influence weather syste