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Meteorological drought refined monitoring method

A meteorological drought and weather station technology, applied in meteorology, weather condition forecasting, measuring devices, etc., can solve the problems of short time series and insufficient time series, achieve clear reflection, improve the level of refinement, and improve drought monitoring and early warning evaluation The effect of service capacity and level

Inactive Publication Date: 2021-04-13
中国气象局广州热带海洋气象研究所
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Problems solved by technology

[0003] Although the spatial density of regional weather stations is large, the time series is short. For disasters such as drought monitoring that need to be compared with long-term historical conditions, the lack of time series is a problem

Method used

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the examples.

[0024] In this context, the present invention obtains the Gamma distribution parameters α and β of the standardized precipitation index of each regional meteorological station location and the perennial average relative Humidity index, constructing a refined drought monitoring index and method that integrates data from high-density regional weather stations and long-sequence national weather stations, providing key technical support for improving fine-grained drought monitoring and early warning evaluation.

[0025] A refined meteorological drought monitoring method, including the following:

[0026] 1) Define the daily meteorological drought index DI of national weather stations or regional weather stations:

[0027]

[0028] In formula (1), SAPI i is the standardized variable of the pre-precipitation index API on the i-th day, where the calculation formula of the A...

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Abstract

The invention discloses a meteorological drought refined monitoring method, which comprises the following steps: defining a day-by-day meteorological drought index DI of a national meteorological station or a regional meteorological station, and obtaining alpha and beta data of the position of each regional meteorological station through inverse distance method spatial interpolation according to Gamma distribution parameters alpha and beta of a national meteorological station standardized precipitation index SPI; and according to the perennial average relative wettability index of the national meteorological station, carrying out spatial interpolation through an inverse distance method to obtain position data of each regional meteorological station, and on the basis of the standardized early-stage precipitation index SAPIi of the high-density regional meteorological station, calculating the drought index based on the high-density regional meteorological station. The method is high in functionality and can be widely applied to the technical field of meteorological monitoring.

Description

technical field [0001] The invention relates to the field of meteorological monitoring, in particular to a refined monitoring method for meteorological drought. Background technique [0002] Drought is one of the most common and widespread meteorological disasters in the world. It has the characteristics of high frequency, long duration and wide range of influence. It has seriously restricted agricultural and animal husbandry production, ecological environment improvement and social and economic development to a certain extent. According to the data of the World Meteorological Organization, about 70% of natural disasters in the world are meteorological disasters, and drought disasters account for more than 35% of natural disasters. In addition, against the background of global warming, droughts are gradually becoming normal, the intensity and frequency of mega-drought events continue to increase, and the degree and scope of their damage become more prominent. At present, th...

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Application Information

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IPC IPC(8): G01W1/10G06Q10/06
CPCG01W1/10G06Q10/06393
Inventor 王春林张强陈慧华沈子琦蓝静汤静申冲黄俊
Owner 中国气象局广州热带海洋气象研究所
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