Long-wave downlink radiation estimation method under cloudy days, storage medium and electronic equipment

Abstract

The invention relates to a long-wave downlink radiation estimation method under cloudy days, a computer storage medium and electronic equipment, and the method comprises the steps: setting the weatherconditions of cloudy days, obtaining a simulation library through simulation according to the weather conditions, and building an estimation parameterization model based on the simulation library; acquiring the cloud top temperature, the cloud top height, the atmospheric total moisture content, the surface temperature and the surface emissivity by remote sensing; according to the cloud top temperature, the cloud top height, the atmospheric total water vapor content, the surface temperature and the surface emissivity which are obtained through remote sensing, estimating long-wave downlink radiation under cloudy days through an estimation parameterization model. According to the invention, an estimation parameterization model is established according to weather conditions; long-wave downlink radiation under cloudy days is estimated according to the model and the acquired cloud top temperature, cloud top height, atmospheric total moisture content, surface temperature and surface emissivity, calculation of long-wave downlink radiation under cloudy days is realized, and the defect that long-wave radiation under cloudy days cannot be effectively inverted in the prior art is overcome.

Description

technical field [0001] The invention relates to the technical field of radiation estimation, in particular to a method for estimating long-wave downlink radiation under cloudy conditions, a computer storage medium and electronic equipment. Background technique [0002] At present, the use of remote sensing to retrieve long-wave downlink radiation mainly relies on thermal infrared bands. Because thermal infrared bands are difficult to penetrate clouds, only some parameters of cloud tops can be obtained, but the atmospheric conditions under clouds cannot be obtained. Concentrating on clear sky conditions, the estimation of long-wave radiation is still a big challenge when there are clouds on cloudy days. This leads to the discontinuity of the radiation products retrieved by optical remote sensing, which is difficult to be adopted by models for studying global change, and it is also difficult to accurately describe the thermal radiation contribution of the atmosphere to the sur...

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Problems solved by technology

[0002] At present, the use of remote sensing to retrieve long-wave downlink radiation mainly relies on thermal infrared bands. Because thermal infrared bands are difficult to penetrate clouds, only some parameters of cloud tops can be obtained, but the atmospheric conditions under clouds cannot be obtained. Focusing on clear sky conditions, the estimation of longwave radiation is still a big challenge when there are clouds on cloudy days

This leads to the discontinuity of the radiation products retrieved by optical remote sensing, which is difficult to be adopted by models for studying global change, and it is also difficult to accurately describe the thermal radiation contribution of the atmosphere to the surface, which limits the application of long-wave radiation retrieved by remote sensing in global change research and surface radiation balance. / Wide application in fields such as energy balance, evapotranspiration estimation, land or climate models

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