WO2020107520A1 - 计算气温与气候因子遥相关关系的方法及装置 - Google Patents
计算气温与气候因子遥相关关系的方法及装置 Download PDFInfo
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- WO2020107520A1 WO2020107520A1 PCT/CN2018/119943 CN2018119943W WO2020107520A1 WO 2020107520 A1 WO2020107520 A1 WO 2020107520A1 CN 2018119943 W CN2018119943 W CN 2018119943W WO 2020107520 A1 WO2020107520 A1 WO 2020107520A1
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- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Definitions
- the invention belongs to analysis and measurement control technology, and particularly relates to a method and a device for calculating the remote correlation between air temperature and climatic factors.
- the study of climate change in a certain area is mainly based on the calculation of the relationship between temperature and climatic factors, and it is mainly based on the difference of regions and the selection of different climatic factors for calculation.
- there are sometimes more than one climatic factor affecting the temperature change in a certain area and sometimes it may be restricted by several climatic factors at the same time.
- Mutual interference of multiple climatic factors is not conducive to predicting changes in temperature, and it is impossible to accurately provide reference for agricultural and forestry production and meteorological risks in specific areas.
- the existing technology is insufficient.
- the purpose of the present invention is to provide a method and device capable of removing interference to calculate the remote correlation between air temperature and climatic factor, aiming to solve the problem of how to accurately predict the response relationship between air temperature and climatic factor in a certain area.
- the present invention provides a method for calculating the remote correlation between air temperature and climatic factors, including the following steps:
- a third-order partial correlation coefficient is used to calculate the variable relationship between each of the climatic factors and the temperature data in the spatial grid;
- step s3 draw a response diagram of the temperature data of the global region and the climate factor.
- the present invention also provides a device for calculating the remote correlation between air temperature and climatic factors, including:
- Input unit to receive selected climate factors with global influence and temperature data with credibility
- the pre-processing unit groups the selected climate factors with global impact and credible temperature data by month to calculate the tie value and deviation of each season within the time period;
- a variable relationship calculation unit based on a geographic information system, calculating a variable relationship between each of the climatic factors and the temperature data in the spatial grid through a third-order partial correlation coefficient;
- the interference removal unit sets the confidence level, excludes interference factors with a confidence level lower than 95% in the calculation results, and outputs the climate factor in the spatial grid that is most affected by temperature changes.
- the device further includes: a mapping unit, based on a geographic information system, plotting a response relationship graph of the temperature data and the climate factor in the global region.
- the present invention When analyzing the correlation between air temperature and multiple climatic factors, the present invention adopts climatic factors with global influence and temperature data with credibility; and calculates each climatic factor and temperature in the spatial grid through the third-order partial correlation coefficient The variable relationship of the data; the interference factor in the calculation result is eliminated by the confidence degree, and the climate factor that has the greatest influence on the temperature change is obtained.
- This solution can more accurately reflect the temperature changes in the selected area, and which climate factors affect the temperature in the area. Based on the changes of several climatic factors at present, it is possible to estimate the temperature change in the specific area in the future, provide certain reference information for the prediction of the vegetation biological yield in the area, and improve the accuracy of agricultural and forestry production risk prediction .
- 1 is the main flow chart of the method for calculating the remote correlation between air temperature and climatic factor of the present invention
- FIG. 3 is a frame diagram of the device for calculating the remote correlation between temperature and climatic factors of the present invention
- FIG. 5 is a graph showing the response relationship of the average surface temperature data drawn by the present invention to climate factors.
- a method for calculating the remote correlation between air temperature and climate factor includes the following steps:
- a third-order partial correlation coefficient is used to calculate the variable relationship between each of the climatic factors and the temperature data in the spatial grid;
- the confidence interval of a probability sample is the interval estimation of a certain overall parameter of this sample.
- the confidence interval shows how much the true value of this parameter falls around the measurement result with a certain probability.
- the confidence interval gives the credibility of the measured value of the measured parameter, that is, the "certain probability" required earlier.
- This probability is called the confidence level, or confidence.
- the partial correlation coefficients of temperature data and ENSO, IOD, AO and AAO are calculated, and the correlation coefficient between temperature and ENSO is more than 95%, and the remaining few are not exceeded, indicating that the temperature is controlled by ENSO and the remaining several climate factors It has little effect on temperature, and can be regarded as interference factor being excluded.
- the calculation method also includes the following steps:
- step s3 draw a response diagram of the temperature data of the global region and the climate factor.
- the temperature data uses monthly average grid data of the highest and lowest temperatures of 0.5 degrees in the world; the climatic factors use El Ni ⁇ o-Southern Oscillation, Indian Ocean Dipole, Arctic Oscillation and Antarctic Oscillation; The climate factor with confidence below 95%.
- the world's highest and lowest temperature month of 0.5 degrees is currently a widely used set of data in the scientific community, with high credibility and data quality.
- the present invention selects four climatic factors that can characterize global climate change. They are the El Ni ⁇ o-Southern Oscillation (ENSO) in the Pacific Ocean, the Indian Ocean Dipole (IOD, Indian Ocean Dipole) in the Indian Ocean, and the Northern Hemisphere Arctic Oscillation (AO: Arctic Oscillation), Antarctic Oscillation in the Southern Hemisphere (AAO: Antarctic Oscillation).
- ENSO El Ni ⁇ o-Southern Oscillation
- IOD Indian Ocean Dipole
- AO Northern Hemisphere Arctic Oscillation
- AAO Antarctic Oscillation
- the step s1 further includes pre-processing the air temperature data; the pre-processing is to group the air temperature data and the climatic factor index by month to calculate the seasonal Draw value and deviation.
- the time period is 1982 to 2016.
- the seasonal averages from 1982 to 2016 were calculated according to natural months. March, April, and May were spring, June, 7, and 8 were summer, 9, 10, and 11 were autumn, and 12, 1, 2 were winter. .
- the draw value is the multi-year average of the temperature in each season from 1982 to 2016, and the deviation is the temperature anomaly obtained by subtracting the multi-year average of the annual value of each quarter.
- step s2 is performed based on a geographic information system with grid calculation function.
- the geographic information system is an ArcGIS environment. Write programs directly under this system to calculate partial correlation. Using the Raster Calculator tool in ArcGIS 9.3 software to write a script can directly calculate the meteorological data layer and climate factor data, and calculate the partial correlation coefficient efficiently and conveniently. The advantage of this is that every time related calculations, raster (Raster) files are generated, the relationship between variables can be better analyzed, understood and explained.
- 1 is the highest temperature
- 2 is the El Ni ⁇ o-Southern Oscillation
- 3 is the Indian Ocean dipole
- 4 is the Arctic Oscillation
- 5 is the Antarctic Oscillation.
- R stands for relationship, that is, relationship.
- R12,345 represents the relationship between variables 1 and 2, while eliminating the interference of variables 3,4,5.
- the grid calculation function of the geographic information system can use the data of each month as a variable, and apply the formula of partial correlation calculation, you can directly implement the calculation process on arcgis and present the calculation results, without the need to write an external program and import the arcgis software Show results.
- the correlation between the highest and lowest temperatures at any point in the world and a certain subsequent factor can be obtained, and the interference of the other three subsequent factors is excluded at the same time.
- This method can better explain global and local climate change, determine that the temperature at any location is most closely related to that climate factor, and through the fluctuation of climate factors, make predictions about the future long-term climate trends in the region.
- step s4 includes the following specific steps:
- each spatial grid corresponds to a pixel, and the layers of the calculated temperature and the correlation coefficient of each climatic factor are separately loaded, and different layers are distinguished by different patterns;
- the transparency of all layers is set to 50%, which is conducive to displaying the overlapping areas affected by climate factors, and clarifying the range of common influence of multiple climate factors.
- dark gray represents the influence area of the Pacific El Ni ⁇ o phenomenon (ENSO)
- light gray represents the influence area of the Indian Ocean dipole (IOD)
- diagonal grid represents the influence area of the Arctic Oscillation (AO)
- orthogonal grid represents Area of influence of the Antarctic Oscillation (AAO).
- All layers are done with 50% transparency to facilitate the observation of some overlapping areas.
- the histogram illustration is the percentage of the total area of the surface area affected by each climatic factor after projecting on an equal area.
- Picture b is the same as picture a, but represents summer
- picture c is the same as picture a, but represents autumn
- picture d is the same as picture a, but represents winter.
- the response graph of temperature and climate factors will have a positive reference significance for the prediction of grain and agricultural and forestry products, and it can give a certain degree of reference for agricultural futures trading.
- the response graph of temperature and climate factors will have a positive reference significance for the prediction of grain and agricultural and forestry products, and it can give a certain degree of reference for agricultural futures trading.
- a device for calculating the remote correlation between air temperature and climatic factors includes:
- the input unit receives the selected climate factors with global influence and the temperature data with credibility.
- the pre-processing unit groups the selected climate factors with global impact and the temperature data with credibility by month to calculate the average value and deviation of each season within the time period.
- the draw value is the multi-year average of the temperature in each season from 1982 to 2016, and the deviation is the temperature anomaly obtained by subtracting the multi-year average of the annual value of each quarter.
- variable relationship calculation unit calculates the variable relationship between each climate factor and the temperature data in the spatial grid by inputting a third-order partial phase relationship formula.
- the interference removal unit sets the confidence level, excludes interference factors with a confidence level lower than 95% in the calculation results, and outputs the climate factor in the spatial grid that is most affected by temperature changes.
- the device further includes: a mapping unit, based on a geographic information system, plotting a response relationship graph of the temperature data and the climate factor in the global region.
- each unit of the device for calculating the remote correlation between air temperature and climatic factors may be implemented by a corresponding hardware or software unit, and each unit may be an independent software or hardware unit, or may be integrated into one software or hardware unit , Not used here to limit the invention.
- each unit may be implemented by a corresponding hardware or software unit, and each unit may be an independent software or hardware unit, or may be integrated into one software or hardware unit , Not used here to limit the invention.
- the present invention performs well on the prediction of global surface temperature.
- the present invention calculates the response relationship between the temperature and the four climatic factors by inputting the formula for calculating the third-order partial correlation relationship in the ground information system, that is, calculating the relationship between the temperature and a certain climatic factor to exclude interference from other climatic factors.
- the response graph of global gas temperature and four climatic factors is drawn to indicate which climatic factors are mainly or jointly affected by the temperature in any area. Introducing confidence to finally determine one or more climatic factors that are most relevant to changes in air temperature improves the accuracy of the teleconnection (response relationship) between the two.
- Based on the changes of several climatic factors at present it is possible to estimate the temperature change in the specific area in the future, provide certain reference information for the prediction of the vegetation biological yield in the area, and improve the accuracy of agricultural and forestry production risk prediction .
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Abstract
Description
Claims (10)
- 一种计算气温与气候因子遥相关关系的方法,其特征在于,包括下述步骤:S1.选取具有全球性影响的气候因子和有公信度的气温数据;S2.通过三阶偏相关系数计算空间栅格内的每一个所述气候因子与所述气温数据的变量关系;S3.通过置信度排除计算结果中的干扰因子。
- 如权利要求1所述的方法,其特征在于,还包括以下步骤:S4.根据所述步骤s3的结果绘制全球区域的所述气温数据与所述气候因子的响应关系图。
- 如权利要求2所述的方法,其特征在于,所述气温数据采用全球0.5度最高、最低气温月平均格点数据;所述气候因子采用厄尔尼诺-南方涛动,印度洋偶极子,北极涛动和南极涛动;所述干扰因子为置信度低于95%的所述气候因子。
- 如权利要求2所述的方法,其特征在于,所述步骤s1还包括对所述气温数据进行预处理;所述预处理为将气温数据与气候因子指数按月分组,计算时间周期内每个季节的平局值及偏差。
- 如权利要求4所述的方法,其特征在于,所述时间周期为1982-2016年。
- 如权利要求2所述的方法,其特征在于,所述步骤s2的计算基于具有栅格计算功能的地理信息系统进行。
- 如权利要求7所述的方法,其特征在于,所述步骤s4包括以下具体步骤:S41.基于所述地理信息系统,将每个空间栅格与像素对应,分别加载计算得到的温度与每个气候因子的相关系数的图层,以不同花纹区分不同的图层;S42.设置置信度,去除所述图层中置信度低于95%的像素;S43.所有图层透明度设置为50%。
- 一种计算气温与气候因子遥相关关系的装置,其特征在于,包括:输入单元,接收选取的具有全球性影响的气候因子和有公信度的气温数据;预处理单元,将选取的具有全球性影响的气候因子和有公信度的气温数据按月分组,计算时间周期内每个季节的平局值及偏差;变量关系计算单元,基于地理信息系统,通过三阶偏相关系数计算空间栅格内的每一个所述气候因子与所述气温数据的变量关系;去干扰单元,设置置信度,排除计算结果中置信度低于95%的干扰因子,输出该空间栅格内对气温变化影响最大受的气候因子。
- 如权利要求9所述的装置,其特征在于,还包括:制图单元,基于地理信息系统,绘制全球区域的所述气温数据与所述气候因子的响应关系图。
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| CN201811443622.6 | 2018-11-29 | ||
| CN201811443622.6A CN109636018A (zh) | 2018-11-29 | 2018-11-29 | 计算气温与气候因子遥相关关系的方法及装置 |
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| CN118939960A (zh) * | 2024-07-09 | 2024-11-12 | 福州大学 | 一种考虑时间效应的植被光合作用气候影响因素评估方法 |
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| CN110852585B (zh) * | 2019-10-30 | 2022-05-10 | 北京师范大学 | 植被生长稳定性的计算方法及装置 |
| CN113917568B (zh) * | 2021-10-13 | 2022-06-24 | 中山大学 | 一种基于确定性系数的降水预报能力与遥相关作用关联方法 |
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- 2018-11-29 CN CN201811443622.6A patent/CN109636018A/zh active Pending
- 2018-12-08 WO PCT/CN2018/119943 patent/WO2020107520A1/zh not_active Ceased
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| CN118939960A (zh) * | 2024-07-09 | 2024-11-12 | 福州大学 | 一种考虑时间效应的植被光合作用气候影响因素评估方法 |
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