Near-surface air temperature inversion method

Abstract

The invention discloses a near-surface air temperature inversion method comprising the following steps: establishing an original data record set of an unmanned weather station; constructing a first sub-pattern learning set and a first sub-pattern validation set; and acquiring a second sub-pattern to a fth sub-pattern, performing near-surface air temperature inversion to acquire a near-surface air temperature inversion image map of a target zone, and performing error correction to acquire a corrected near-surface air temperature inversion image map. According to the near-surface air temperature inversion method disclosed by the invention, the near-surface air temperature inversion is performed by collecting actually-measured air temperature of the unmanned weather station, collecting meteorological satellite data, DEM data and astronomy and calendar rules and also adopting a super nonlinear algorithm, and the near-surface air temperature inversion image map is then calculated by using a high-performance computer. Results show that the near-surface air temperature inversion method disclosed by the invention is relatively high in pattern accuracy, high in result reliability and strong in generalization ability, and ensures that the interferences of clouds, terrains and the like can be overcome; and a constructed CPU+GPU heterogeneously-cooperative parallel computer ensures that the computation speed can be increased by more than 1000 times, so that the near-surface air temperature inversion method is convenient for large-area application and computing capacity expansion.

Description

technical field [0001] The invention relates to the field of meteorological data processing, in particular to a near-surface air temperature inversion method. Background technique [0002] The air temperature near the surface refers to the air temperature of the shutter box 1.5 meters above the ground. It is an important parameter in the energy balance of the surface and an important physical quantity in the interaction process between the ground and the atmosphere. It can reflect the visible and potential energy of the soil and underground. Change is an important factor affecting human production activities. Crops, forest growth and development, development and evolution of diseases and insect pests, low-temperature freezing disasters and high-temperature hazards are all related to the near-surface temperature. In addition, complete near-surface temperature is also an important factor for accurate forecasting of various meteorological elements [Zhao Gaoxiang, Wang Hongqi. ...

AI Technical Summary

Problems solved by technology

Although the thermal infrared remote sensing data of polar orbiting satellites such as MODIS and FY2 / FY3 can be used to retrieve the near-surface air temperature, it cannot overcome the interference of clouds and cannot realize all-weather monitoring

[0009] In the past few years, my country's FY2 / FY3 series and MODIS satellite technology have improved rapidly, and the deployment of unmanned weather stations in various provinces is also coming to an end, but the analysis application technology and software analysis methods are relatively lagging behind

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