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A shortwave radiation and air temperature downscaling method, device and storage medium

A short-wave radiation and downscaling technology, which is applied in the directions of instruments, graphics and image conversion, design optimization/simulation, etc., can solve the problems of not fully considering the spatial differences of meteorological data, and achieve the effect of improving accuracy

Active Publication Date: 2022-03-29
HOHAI UNIV
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Problems solved by technology

For statistical downscaling methods, linear and bilinear interpolation methods are usually used for spatial downscaling, which does not fully consider the spatial differences caused by the impact of meteorological data on the underlying surface

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  • A shortwave radiation and air temperature downscaling method, device and storage medium
  • A shortwave radiation and air temperature downscaling method, device and storage medium
  • A shortwave radiation and air temperature downscaling method, device and storage medium

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Embodiment Construction

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0023] like figure 1 As shown, an embodiment of the present invention provides a method for downscaling shortwave radiation and air temperature, including the following steps:

[0024] Step 1: Obtain coarse-resolution short-wave radiation and air temperature raster data and fine-resolution terrain (elevation, slope, and aspect) raster data in the study area, including:

[0025] Download the meteorological-driven dataset and extract the coarse-resolution air temperature and downward shortwave radiation raster data in the study area;

[0026] According to the fine-resolution elevation raster data of the study area, use the slope tool in the geographic information system to calculat...

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Abstract

The invention discloses a shortwave radiation and air temperature downscaling method, device and storage medium, wherein the downscaling method includes the following steps: obtaining the coarse resolution downward shortwave radiation and air temperature grid data of the research area, and the elevation of the fine resolution , slope and aspect raster data; calculate the sun elevation angle, azimuth angle and terrain shadow at any time of the fine resolution grid in the study area, the angle between the downward shortwave radiation and the normal vector of the plane where the grid is located, and calculate the fine resolution The radiation influence coefficient of the grid is used to downscale the radiation; the downscaled temperature data is realized by using the downscaled solar radiation, solar radiation and temperature conversion coefficient, and elevation data. The present invention downscales the meteorological data by considering the spatial heterogeneity of the underlying surface, fully considers the influence of terrain factors on the radiation distribution, and utilizes the downscaled radiation data and radiation.

Description

technical field [0001] The invention belongs to the field of ecological hydrology, and in particular relates to a short-wave radiation and air temperature downscaling method, device and storage medium. Background technique [0002] Radiation, temperature, and precipitation are important factors that affect the eco-hydrological process and ecological pattern. In land surface models, station or satellite data are usually used as the meteorological driver for the model. Affected by geographical factors such as terrain height, slope, and slope aspect, radiation and air temperature are spatially different, which in turn leads to different spatial distribution characteristics of eco-hydrological processes on different scales (meters to kilometers). In order to accurately describe the eco-hydrological process, it is necessary to consider the spatial distribution characteristics of fine-scale terrain factors, and then provide a meteorological drive with high spatial resolution for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06T3/40G06F119/08
CPCG06F30/20G06T3/4007G06F2119/08
Inventor 张珂李运平
Owner HOHAI UNIV
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