Mountainous precipitation measurement and calculation method suitable for south-eastern Tibetan plateau area and application

A mountain and regional technology, applied in the field of precipitation measurement in high-altitude mountainous areas, can solve the problems of inability to obtain precipitation data, lack of meteorological observation stations, etc., and achieve the effect of scientific and simple calculation process and reliable principle.

Inactive Publication Date: 2016-09-07
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is aimed at the lack of meteorological observation stations and the inability to obtain precipitation data in the high-altitude areas on the southeastern margin of the Qinghai-Tibet Plateau, and to provide a mountainous precipitation measurement method and application suitable for the southeastern margin of the Qinghai-Tibet Plateau. The method is based on the lack of meteorological observation stations The geographical location, altitude, slope aspect and slope characteristics of the mountainous area can be used to calculate the precipitation with the vertical distribution relationship of precipitation, which can realize the acquisition of precipitation data in mountainous areas lacking meteorological observation stations

Method used

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  • Mountainous precipitation measurement and calculation method suitable for south-eastern Tibetan plateau area and application
  • Mountainous precipitation measurement and calculation method suitable for south-eastern Tibetan plateau area and application
  • Mountainous precipitation measurement and calculation method suitable for south-eastern Tibetan plateau area and application

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Experimental program
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Embodiment 1

[0032] Such as figure 1 shown. Jiangzui Ditch is located on the left bank of the Dadu River. The ditch mouth is 5km away from the Huangjinping Hydropower Station of the Dadu River. It is under the jurisdiction of Kangding County, Ganzi Prefecture, Sichuan. The source of Jiangzui Gully is about 3800m above sea level, the gully mouth is about 1420m above sea level, and the main ditch is about 19.37km long. The main ditch of Jiangzui Ditch is Guada Ditch. The ditch in its watershed is relatively tortuous, and the flow direction of the main ditch changes greatly. It turns from southeast to nearly east-west near Xiahuodi, and after a certain distance, it turns to south-west. to flow into the Dadu River. The clear water confluence area is 3800m-2800m, the provenance area is 2800-1800m, and below 1800m is the circulation area and accumulation area. The vegetation is developed from the two river mouths to the ditch source in the upper reaches of Maiben Township. Mozigou, a branch d...

Embodiment 2

[0047] Such as figure 2 shown. Lawagou is a grade I tributary on the left bank of the Jinsha River. The coordinates of the mouth of the ditch are 30°5′2.24″N, 99°2′40.09″E. The watershed generally flows in the direction of EW, and flows into the Jinsha River at an angle of 73°. The length of the main ditch is 8.13km, and the drainage area is 27.77km 2 . The upper reaches of the entire watershed have relatively gentle terrain slopes, while the middle and lower reaches have relatively steep topography, especially the steep topography on the left bank of the lower reaches of the channel, which provides favorable conditions for the development of collapses and the like. The elevation of the source of Lawagou is 4374m, which belongs to the local level II planation plane (4200-4400m above sea level), and the elevation of the mouth of the valley is 2532m. Below 2800m in the valley is dry and hot valley shrub, 2800-3100m is mountain thin-leaf shrub, and then gradually enters cold...

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Abstract

The invention discloses a mountainous precipitation measurement and calculation method suitable for a south-eastern Tibetan plateau area and an application. The mountainous precipitation measurement and calculation method comprises the steps of firstly obtaining the altitude, slope aspect and gradient of a mountainous area to be subjected to precipitation measurement and calculation; secondly determining a subarea in which the mountainous area to be subjected to the precipitation measurement and calculation is located according to a geographic position of the mountainous area to be subjected to the precipitation measurement and calculation; and finally performing calculation by applying a precipitation vertical distribution relational expression of the subarea to obtain a precipitation amount of the mountainous area to be subjected to the precipitation measurement and calculation. The method is reliable in principle and scientific, simple and convenient in calculation process, can be universally suitable for obtaining precipitation data of a high-altitude area lack of meteorological stations in the south-eastern Tibetan plateau area, and has important reference values for precipitation estimation and flow concentration calculation of mountainous hazard forming areas of debris flow and the like.

Description

technical field [0001] The invention relates to a method for calculating precipitation in mountainous areas lacking meteorological observation stations, in particular to a method for measuring and calculating precipitation in high-altitude mountainous areas lacking meteorological observation stations in the southeastern margin of the Qinghai-Tibet Plateau and its application. Background technique [0002] Precipitation is the phase change of water in the atmosphere, the condensation of water vapor into rain and snow. From the formation conditions of precipitation, it can be seen that in addition to atmospheric circulation, the vertical distribution of precipitation is greatly affected by the geographical environment. The topographic factors that affect the precipitation in mountainous areas are mainly: tall mountains, topography, altitude, slope position, etc. Over the years, precipitation in mountainous areas has always been a difficult point of research. [0003] For prec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F17/18
CPCG06F16/29G06F17/18Y02A90/10
Inventor 苏鹏程韦方强董丹丹刘晶晶孙铭
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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