Method and device for inverting phase change process of water vapors in cloud based on ground-based microwave radiometer

Abstract

A method and device for inverting a phase change process of water vapors in cloud based on a ground-based microwave radiometer are provided. The method includes obtaining the actually measured data ofa vertical detection target area of the ground-based microwave radiometer and checking data consistency; using the actually measured data and a cloud threshold to identify a mixed phase state cloud region and to calculate an air pressure profile; using the actually measured data in combination with the calculated air pressure profile, calculating each water vapor pressure profile in the cloud; and inverting the phase change process of water vapors in cloud by using a water vapor phase change model. The method solves a problem that it is difficult for a conventional dual-polarization radar toaccurately recognize a particle phase state due to a low signal-to-noise ratio and a satellite can only recognize the phase states of the water cloud and the ice cloud on to top of the cloud, and canobtain the phase change process with time and space of water vapors in the mixed phase cloud of the target region, reflects the dynamic trends of the balance between the solid, liquid, and gaseous states of water vapors in the cloud, is particularly applicable to predicting and forecasting rainfall phase states, analyzing the evolution characteristics of cloud microphysics, and determining artificial precipitation (hail prevention) cloud seeding positions and selecting right time for the job.

Description

technical field [0001] The invention relates to a method for inverting the phase transition process of water vapor in clouds, specifically a method for inverting the phase transition process of water vapor in clouds based on a ground-based microwave radiometer. The invention also relates to a method for inverting the phase transition process of water vapor in clouds The device is specifically a device for inverting the phase transition process of water vapor in clouds based on a ground-based microwave radiometer. The invention belongs to the field of atmospheric physics and meteorology. Background technique [0002] The water vapor phase transition process depicts the formation, development and evolution trends of airborne clouds and precipitation. Mixed precipitation often triggers severe weather, such as heavy rain, hail, thunderstorms and strong convective weather, and blizzards, freezing rain and other road water, icing and low visibility events are extremely serious fo...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for inverting the phase change process of water vapor in clouds based on a ground-based microwave radiometer, which can make up for the low signal-to-noise ratio of current dual-polarization radars, which is difficult to accurately identify particle phase states and The satellite can only identify the phase state of cloud top water cloud and ice cloud, and can effectively obtain a phase change process of water vapor in the mixed phase cloud in the target area over time and space, reflecting the relationship between the solid, liquid and gas states of water vapor in the cloud. The dynamic change trend of balance income and expenditure is applicable to the prediction of precipitation phase state, analysis of cloud microphysical evolution characteristics, determination of artificial rain enhancement (hail prevention) cloud seeding position and selection of suitable operation timing, and can also be used for large-scale event guarantee, traffic The situation of meteorological guarantees required for safe transportation guarantee, safe aerospace flight and safe production in industry and agriculture

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