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A method and system for quality control of regional multi-source precipitation data

A technology of data quality and control methods, applied in complex mathematical operations and other directions, can solve problems such as difficulty in quality control

Active Publication Date: 2021-11-12
CMA METEOROLOGICAL OBSERVATION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of precipitation, it is still relatively difficult to carry out effective quality control on it

Method used

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  • A method and system for quality control of regional multi-source precipitation data
  • A method and system for quality control of regional multi-source precipitation data
  • A method and system for quality control of regional multi-source precipitation data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] The preset precipitation test formula is R gi =0&R ri ≥16.0&R si ≥16.0,

[0149] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 50%;

[0150] The preset precipitation test formula is R gi =0&8ri si ≥16.0,

[0151] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 30%;

[0152] The preset precipitation test formula is R gi =0&R ri ≥16.0&8si <16.0,

[0153] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 20%;

[0154] Among them, R gi Expressed as the precipitation data of ground stations at the i-th moment, R ri Expressed as radar estimated precipitation data at time i, R si Expressed as the estimated precipitation data of the l...

Embodiment 2

[0156] The preset precipitation test formula is R gi >5&R ri =0&R si = 0,

[0157] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 50%;

[0158]

[0159] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 2, and the confidence level is 50%;

[0160] In this embodiment, the ground station precipitation data is greater than 0mm, the radar estimated precipitation data and the live analysis field estimated precipitation data are both 0, and the ground station precipitation data has a precipitation range greater than 0 and less than or equal to 3mm in the past 24 hours If the number of times within is greater than 8, the precipitation data of the ground station is abnormal data, the quality control code is marked as 2, and the confidence level is 50%.

[0161] The preset precipitation t...

Embodiment 3

[0167] The preset precipitation test formula is:

[0168] 0gi ≤16&R ri -R gi >0&R si -R gi >0&R ri -R gi >n 1 σ ru &R si -R gi >n 1 σ su &R gi >16&R ri -R gi >0&R si -R gi >0&|R gi -R si | / R gi >n 1 σ su &|R gi -R ri | / R gi ≤n 1 σ ru hour,

[0169] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 50%;

[0170] The preset precipitation test formula is:

[0171] 0gi ≤16&R ri -R gi >0&R si -R gi >0&R ri -R gi >n 1 σ ru &R si -R gi ≤n 1 σ su &R gi >16&R ri -R gi >0&R si -R gi >0&|R gi -R ri | / R gi >n 1 σ ru &|R gi -R si | / R gi ≤n 1 σ su hour,

[0172] The abnormal data is the precipitation data of the ground station, the quality control code in the preset quality control logo is 1, and the confidence level is 20%;

[0173] The preset precipitation test formula is:

[0174] 0gi ≤16&R ri -R gi >0&R si -R gi >0&R ...

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Abstract

The invention relates to a method for controlling the quality of regional multi-source precipitation data, comprising the following steps: acquiring ground station precipitation data, radar estimated precipitation data and live analysis field estimated precipitation data in a target area; obtaining corresponding Abnormal data of ground station precipitation data, radar estimated precipitation data, and live analysis field estimated precipitation data; quality control marks for abnormal data according to preset quality control signs; select adjacent stations with the ground station as the center and a radius of 5km to Conduct spatial consistency checks on the ground station precipitation data, radar estimated precipitation data, and live analysis field estimated precipitation data; perform quality control marking on the matching results of adjacent stations according to the preset quality control marks; The control results are comprehensively judged. Through the technical scheme of the invention, the observation quality of the rain gauge can be monitored in real time, and the rain gauge with problems can be accurately maintained and calibrated.

Description

technical field [0001] The invention relates to the technical field of data quality control, in particular to a method and system for quality control of regional multi-source precipitation data. Background technique [0002] With the continuous advancement of the construction of a modern meteorological observation system, my country has formed a ground-based, space-based, and space-based observation system. Based on the construction of national automatic stations, various encrypted observation automatic stations, and rainstorm detection stations, a relatively high The observed precipitation data is a kind of valuable observation data, which has very important applications in the forecasting of medium and small scale heavy precipitation, assessment of geological hazards in small watersheds, and fine precipitation monitoring. [0003] Due to instrument failure, maintenance level, etc., the precipitation at ground observation stations may contain suspicious and incorrect values,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 李翠娜梁海河刘天琦王彦霏林雪娇
Owner CMA METEOROLOGICAL OBSERVATION CENT