Data for Evidence of Synchronization between Solar Activity and Agricultural Performance in Germany

Published: 21 November 2023| Version 1 | DOI: 10.17632/pwh57sgwrw.1
Carlos Alberto Zúniga-Gonzalez,


Database Summary: Evidence of Solar Activity and Agricultural Performance Synchronization in Germany This database investigates the correlation between solar activity, measured in Wolf units, and the agricultural performance of various crops and livestock in Germany. It encompasses data on maize, barley, oats, meat, livestock count, potatoes, and wheat production, correlating them with solar activity cycles. Background: Numerous studies have highlighted the causal relationship between solar eruptive activity and the biosphere, prompting interest in exploring these connections. Recent observations have identified synchronization between multi-year solar activity cycles, particularly the 11-year cycles recorded since 1700, and agricultural productivity. These predictable solar cycles offer insight into anticipating years of increased or decreased agricultural output. Understanding this synchronization can aid resource planning, aiming for a more favorable cost-benefit ratio and profitability in the agri-food industry. Objective: The primary aim is to analyze the correlation between solar activity cycles and agricultural performance, aiming to leverage this knowledge for enhanced resource planning and profitability in the agri-food sector. This summary outlines the scope of your database, focusing on the correlation between solar activity cycles and agricultural productivity in Germany, emphasizing the potential benefits of resource planning in the agri-food industry.


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Methodology Summary: Correlation Analysis between Solar Activity and Agricultural Yield in Germany Solar Activity Measurement: The Wolf Number, a representative index of Solar Activity, was used, computed as an annual average derived from the number and area of sunspots visible on the solar disk. Data were obtained from globally standardized observatories (Solar Influences Data Analysis Center | Sunspot Number | SIDC). Data Analysis: Statistical Data: General statistical data for annual crop yields and livestock were collected and organized in Table 1. Crop Selection: A representative sample of 10 productive categories was chosen from available data, reflecting German agro-industry trends over 61 years (except for beans, available for 31 years). Data Processing: Excel was used for data organization and basic statistical computations. Statistical Analysis: Software Utilization: Microcal Origin 6.0 was employed for cross-correlation and spectral analysis of time series data. Data Normalization: All datasets were normalized to maximum values, and trend components were removed from the time series. Filtering Approach: A 5-year sliding mean was applied to focus on multi-year fluctuations spanning approximately 10 to 25 years, suppressing shorter-term variations. Fourier Transform and Power Spectrum: Mathematical Definition: Fourier transform was applied using mathematical definitions to transform sequences of real numbers into complex numbers. FFT (Fast Fourier Transform): Microcal Origin 6.0 software facilitated FFT analysis to generate power spectra, showcasing power values distributed concerning frequency. Correlation Function: Cross-Covariance: Cross-correlation was utilized to measure similarity between signals in time or space, identifying notable particularities in one signal concerning another. This methodology summary outlines the steps taken for data analysis, statistical computations, spectral analysis using Fourier Transform, and cross-correlation techniques employed to investigate the relationship between solar activity and agricultural yield in Germany over the specified time frames.


Colegio de Postgraduados Campus Tabasco, Universidad Nacional Autonoma de Nicaragua Leon, Ministerio de Ciencia Tecnologia y Medio Ambiente


Product Yield, Time Space Correlation Function, Agri-Environmental Indicator, Solar Activity