Millennial Oscillations of Solar Irradiance and Magnetic Field in 600–2600

Zharkova, V. V.

doi:10.5772/intechopen.96450

Cited by 6 publications

(36 citation statements)

References 55 publications

(126 reference statements)

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“…Let us now apply the Morlet wavelet and Fourier analysis to the solar irradiance data. In Figure 10 Bottom plot: the unnormalised solar irradiance (Y-axis) recovered for the holocene [83,38] versus calendar years (X-axis), which demonstrates weak oscillations in the filtered (red) line with a period of about 2200 -2300 years, similar to those reported in our unfairly retracted paper [84] and confirmed later with the real Sun-Earth ephemeris [85]. left plot and the Fourier spectrum derived from this solar irradiance curve.…”

Section: Periods Detected In Oscillations Of Solar Irradiancesupporting

confidence: 74%

Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment

Zharkova¹,

Васильєва²,

Shepherd³

et al. 2023

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Solar magnetic activity is expressed via variations of sunspots and active regions varying on different timescales. The most accepted is an 11-year period supposedly induced by the electromagnetic solar dynamo mechanism. There are also some shorter or longer timescales detected: the biennial cycle (2 -2.7 years), Gleisberg cycle (80 -100 years), and Hallstatt's cycle (2100 -2300 years). Recently, using Principal Component Analysis (PCA) of the observed solar background magnetic field (SBMF), another period of 330 -380 years, or Grand Solar Cycle (GSC), was derived from the summary curve of two eigenvectors of SBMF. In this paper, a spectral analysis of the averaged sunspot numbers, solar irradiance, and the summary curve of eigenvectors of SBMF was carried out using Morlet wavelet and Fourier transforms. We detect a 10.7-year cycle from the sunspots and modulus summary curve of eigenvectors as well a 22-year-cycle and the grand solar cycle of 342 -350-years from the summary curve of eigenvectors. The Gleissberg centennial cycle is only detected on the full set of averaged sunspot numbers for 400 years or by adding a quadruple component to the summary curve of eigenvectors. Another period of 2200 -2300 years is detected in the Holocene data of solar irradiance measured from the abundance of 14 C isotope. This period was also confirmed with the period of about 2000 -2100 years derived from a baseline of the solar background magnetic field, supposedly, caused by the solar inertial motion (SIM) induced by the gravitation of large planets. The implication of these findings for different deposition of solar radiation into the northern and southern hemispheres of the Earth caused by the combined effects of the solar activity and solar inertial motion on the terrestrial atmosphere is also discussed.

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Section: Periods Detected In Oscillations Of Solar Irradiancesupporting

confidence: 74%

Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment

Zharkova¹,

Васильєва²,

Shepherd³

et al. 2023

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“…Zharkova VV, Shepherd SJ, Popova E, et al [20,21] published their work in 2015. They used principal component analysis and Eureqa artificial intelligence software to predict solar activity on a millennium timescale.…”

Section: Circle 10 Zharkova and Shepherdmentioning

confidence: 99%

The Sun Versus CO2 as the Cause of Climate Change Projected to 2050

Lightfoot¹,

Ratzer

2022

J. Basic Appl. Sci.

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The current controversy over the cause of increasing global temperatures since the middle of the 20th century comes from the IPCC First Assessment Report issued in 1990. The report states rising carbon dioxide (CO2) warms the air, thereby holding more of the significant warming gas, water vapor. This additional water vapor feeds back to amplify the warming by CO2. The IPCC has continually promoted this concept in its reports since 1990. Up-to-date science proves the IPCC concept is faulty. Scientists discovered that when the Sun's energy output changes, it impacts the Earth's temperature, and it does this cyclically. Current, reliable evidence shows the Earth has just come through a warm period. It is now in the early stages of cooling that might be similar to the Dalton Minimum and last for three or four decades. Average temperatures can drop by up to 1.5oC and increase the rate of crop failures that have already started. It won't be easy to maintain the benefits of the recent warm phase of the Sun during the upcoming solar minimum.

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“…29,30 On the other hand, in the past few hundred years the Sun was shown to provide some additional radiation to the Earth by moving closer towards the Earth orbit because of the solar inertial motion (SIM) caused by the gravitation of large planets. 38,39 These periodic variations of the Sun-Earth distance, and the solar irradiance, occur every 2100-2200 years, called Hallstatt's cycles, which were independently derived from the isotope abundances in the terrestrial biomass. 40,41 In the current Hallstatt's millennial cycle, the Sun-Earth distances are decreasing from the MM until 2600 that leads to the increase of solar irradiance deposited to the atmosphere of the Earth (and other planets).…”

Section: Introductionmentioning

confidence: 99%

“…40,41 In the current Hallstatt's millennial cycle, the Sun-Earth distances are decreasing from the MM until 2600 that leads to the increase of solar irradiance deposited to the atmosphere of the Earth (and other planets). 39 This SIM effect contributes to the terrestrial atmosphere heating, in addition to any heating caused by the greenhouse gasses considered in the terrestrial models.…”

Section: Introductionmentioning

confidence: 99%

“…These two effects define the resulting temperatures on the Earth with the GSM dominating the next 30 years. 32,39 Therefore, in this paper we attempt to establish more definite links between the frequency of volcanic activity and the variations of solar activity using both the sunspot numbers 42 and the new proxy of solar activity linked to the solar magnetic field. 30…”

Section: Introductionmentioning

confidence: 99%

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Terrestrial volcanic eruptions and their association with solar activity

Vasilieva¹,

Zharkova²

2022

Preprint

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We compare the frequencies of volcanic eruptions in the past 270 years with the variations of solar activity and summary curve of principal components of the solar background magnetic field (SBMF) derived from the WSO synoptic magnetic maps. Quartile distributions of volcanic eruption frequencies over the four phases of a 11 year cycle (growth, maximum, descent and minimum) reveal higher numbers of eruptions occurring at the maxima of SBMF of southern polarity with some increases at the minima of sunspot numbers. The frequency analysis of volcanic eruptions with Morlet wavelet reveals that the period of 22 years is more pronounced than 11 years. Comparison of the volcanic frequencies with the summary curve of SBMF for 11 cycles after 1868 (excluding 1950-1980 affected by the open nuclear bomb testing) reveals a strong correlation with the coefficient of -0.84 (within a confidence interval of 95%), while for 8 cycles in the early period of 1750-1868 the correlation becomes nearly twice lower. This lower correlation was likely to be caused by the geomagnetic jerk and migration of the Earth's magnetic pole to lower latitudes. The maxima of volcanic eruptions are shown to occur during solar activity cycles with the southern magnetic polarity that, in turn, can be associated with stronger disturbances of the geomagnetic field leading to the eruption number increase. The next anticipated maximum of volcanic eruptions is expected to occur during cycle 26 (2031-2042), when the solar background magnetic field will have a southern magnetic polarity. These volcanic eruptions can contribute to terrestrial cooling during the modern grand solar minimum (GSM) (2020-2053).

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Millennial Oscillations of Solar Irradiance and Magnetic Field in 600–2600

Cited by 6 publications

References 55 publications

Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment

Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment

The Sun Versus CO2 as the Cause of Climate Change Projected to 2050

Terrestrial volcanic eruptions and their association with solar activity

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