This study of solar-terrestrial relationships compares the years of the solar cycle based on Wolf sunspot numbers and the arithmetic averages of crude oil prices from 1970 to 2023 (solar cycles 20-25), all presented in a single chart. Mean annual Wolf numbers were sourced from the Solar Influences Data Analysis Center (SIDC), while Brent crude oil price data (adjusted to 2021 dollars) was obtained from BP and the Federal Reserve Economic Data website for 2022-2023.
Order of years in solar cycles and crude oil prices for the period 1970-2023.
Using this data, the above diagram was created to illustrate the very strong correlation (coefficient 0.9908) between crude oil prices and the ordinal years of the solar cycles for the period 1970-2023. Since 2024 marks the fifth year of the current Solar Cycle #25, it corresponds to an average forecast Brent oil price of $74.18 per barrel. In 2025, the sixth year of the cycle, the projected price is $56.04. In 2026, the seventh year of the cycle, the forecast is $43.84, while the anticipated price for 2027 is $42.84.
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