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High resolution precipitation data processing method

A data processing, high-resolution technology, applied in the field of data processing, which can solve the problems of not considering cloud effect, unreasonable precipitation data, etc.

Inactive Publication Date: 2009-01-21
NAT SATELLITE METEOROLOGICAL CENT
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  • Claims
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Problems solved by technology

[0004] When interpolating precipitation with low temporal resolution, the simplest and most common method is to evenly distribute the accumulated precipitation to each hour. However, this method does not consider the role of clouds in the interpolation, thus resulting in unreasonable precipitation data after interpolation.

Method used

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer and easier to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0024] Please refer to figure 1 , figure 1 It is a flowchart of the high-resolution precipitation data processing method of the present invention.

[0025] The present invention provides a kind of high-resolution precipitation data processing method, and this method comprises the following steps:

[0026] Obtain the spatial distribution data of accumulated precipitation (S101), in this step, use the existing technology to obtain the spatial distribution data of accumulated precipitation with statistical time of 3 hours, 6 hours or 24 hours;

[0027] Classify the cloud image (S...

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Abstract

The invention relates to a precipitation data processing method which uses temporal interpolation to treat detected accumulated precipitation, based on the could picture detected per hour by geostationary meteorological satellite and cloud classification information to attain high resolution. The method comprises the steps of: attaining accumulation precipitation spatial distribution data; classifying could pictures; finding the precipitation rate of each could type; determining the accumulation precipitation temporal interpolation weight factor of each could type; processing temporal weight interpolation of each hour for the accumulation precipitation evaluation data; and outputting the accumulated precipitation evaluation data of each hour. The invention can improve the time resolution of precipitation evaluation data treatment.

Description

technical field [0001] The invention relates to a data processing method, in particular to a high-resolution precipitation data processing method based on static meteorological satellite observation. Background technique [0002] Precipitation is one of the most important variables affecting the exchange of water, heat and momentum between the earth and the atmosphere controlled by the surface. It is also a very important weather, climate and environmental variable. Reasonable and accurate estimation of the temporal and spatial distribution of precipitation is important in climate, ecology, It is of great significance in agricultural and environmental research. One of the main applications of precipitation estimation is to provide high-resolution spatial and temporal distribution of meteorological forcing for land surface process models and hydrological models, and to estimate various land surface variables such as soil moisture and temperature, runoff, etc. At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/10G01W1/14
Inventor 师春香
Owner NAT SATELLITE METEOROLOGICAL CENT
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