Solar modulation of cosmogenic nuclide production over the last millennium: comparison between 14C and 10Be records

Bard, Édouard; Raisbeck, G. M.; Yiou, F.; Jouzel, Jean

doi:10.1016/s0012-821x(97)00082-4

Cited by 301 publications

(292 citation statements)

References 52 publications

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“…We can discount the possibility that matching variations in the isotope abundances in their respective reservoirs are similarly influenced by climate during their terrestrial life history, because the transport and deposition of each are so different. After allowance has been made to both series for the effect of geomagnetic field changes, the correlation between decadal means over the past millennium of the abundance of 10 Be and the production rate of 14 C is 0.81 (with the 10 Be leading, as expected, by about 10 years and a significance level exceeding 99%) (Bard et al 1997). This correlation also applies to the more recent data.…”

Section: Paleoclimate Studies and Solar Proxiesmentioning

confidence: 70%

Solar Influence on Global and Regional Climates

Lockwood

2012

Surv Geophys

152

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The literature relevant to how solar variability influences climate is vast-but much has been based on inadequate statistics and non-robust procedures. The common pitfalls are outlined in this review. The best estimates of the solar influence on the global mean air surface temperature show relatively small effects, compared with the response to anthropogenic changes (and broadly in line with their respective radiative forcings). However, the situation is more interesting when one looks at regional and season variations around the global means. In particular, recent research indicates that winters in Eurasia may have some dependence on the Sun, with more cold winters occurring when the solar activity is low. Advances in modelling ''top-down'' mechanisms, whereby stratospheric changes influence the underlying troposphere, offer promising explanations of the observed phenomena. In contrast, the suggested modulation of low-altitude clouds by galactic cosmic rays provides an increasingly inadequate explanation of observations.

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Section: Paleoclimate Studies and Solar Proxiesmentioning

confidence: 70%

Solar Influence on Global and Regional Climates

Lockwood

2012

Surv Geophys

152

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“…However, there are different complications in this case because the oceans and the biosphere act as large reservoirs which disconnect abundances and production rates (Stuiver & Quay 1980). Despite these differences, modelling of the effect of 14 C reservoirs implies that the production rates of 14 C and 10 Be are similar (Bard et al 1997;Beer 2000). This suggests that similarities between the cosmogenic isotope record and climate records indicate a real link to climate forcing.…”

Section: Discussionmentioning

confidence: 99%

An evaluation of the correlation between open solar flux and total solar irradiance

Lockwood

2002

A&A

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Abstract. The correlation between the coronal source flux FS and the total solar irradiance ITS is re-evaluated in the light of an additional 5 years' data from the rising phase of solar cycle 23 and also by using cosmic ray fluxes detected at Earth. Tests on monthly averages show that the correlation with FS deduced from the interplanetary magnetic field (correlation coefficient, r = 0.62) is highly significant (99.999%), but that there is insufficient data for the higher correlation with annual means (r = 0.80) to be considered significant. Anti-correlations between ITS and cosmic ray fluxes are found in monthly data for all stations and geomagnetic rigidity cut-offs (r ranging from −0.63 to −0.74) and these have significance levels between 85% and 98%. In all cases, the fit is poorest for the earliest data (i.e., prior to 1982). Excluding these data improves the anticorrelation with cosmic rays to r = −0.93 for one-year running means. Both the interplanetary magnetic field data and the cosmic ray fluxes indicate that the total solar irradiance lags behind the open solar flux with a delay that is estimated to have an optimum value of 2.8 months (and is within the uncertainty range 0.8-8.0 months at the 90% level).

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“…Variations in the atmospheric concentration of 14 C are the result of changes in the Earth's dipole moment (Elsasser et al, 1956;O'Brien, 1979;Lal, 1988), strengthening or weakening of solar activity (Stuiver and Quay, 1980;Bard et al, 1997) and parameters of radiocarbon exchange system (Oeschger et al, 1975;Siegenthaler et al, 1980;Stocker and Wright, 1996;Goslar et al, 1999). Variability of the 14 C Correspondence to: V. A. Dergachev (v.dergachev@pop.ioffe.rssi.ru) concentration is proved by experimental research, see (e.g.…”

Section: Introductionmentioning

confidence: 97%

The ~ 2400-year cycle in atmospheric radiocarbon concentration: bispectrum of <sup>14</sup><i>C</i> data over the last 8000 years

Vasiliev¹,

Dergachev

2002

Ann. Geophys.

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Abstract. We have carried out power spectrum, time-spectrum and bispectrum analyses of the long-term series of the radiocarbon concentrations deduced from measurements of the radiocarbon content in tree rings for the last 8000 years. Classical harmonic analysis of this time series shows a number of periods: 2400, 940, 710, 570, 500, 420, 360, 230, 210 and 190 years. A principle feature of the time series is the long period of ∼ 2400 years, which is well known. The lines with periods of 710, 420 and 210 years are found to be the primary secular components of power spectrum. The complicated structure of the observed power spectrum is the result of ∼ 2400-year modulation of primary secular components. The modulation induces the appearance of two side lines for every primary one, namely lines with periods of 940 and 570 years, of 500 and 360 years, and 230 and 190 years. The bispectral analysis shows that the parameters of carbon exchange system varied with the ∼ 2400-year period during the last 8000 years. Variations of these parameters appear to be a climate effect on the rate of transfer of 14 C between the atmosphere and the the ocean.

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Solar modulation of cosmogenic nuclide production over the last millennium: comparison between 14C and 10Be records

Cited by 301 publications

References 52 publications

Solar Influence on Global and Regional Climates

Solar Influence on Global and Regional Climates

An evaluation of the correlation between open solar flux and total solar irradiance

The ~ 2400-year cycle in atmospheric radiocarbon concentration: bispectrum of <sup>14</sup><i>C</i> data over the last 8000 years

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Solar modulation of cosmogenic nuclide production over the last millennium: comparison between 14C and 10Be records

Cited by 301 publications

References 52 publications

Solar Influence on Global and Regional Climates

Solar Influence on Global and Regional Climates

An evaluation of the correlation between open solar flux and total solar irradiance

The ~ 2400-year cycle in atmospheric radiocarbon concentration: bispectrum of &lt;sup&gt;14&lt;/sup&gt;&lt;i&gt;C&lt;/i&gt; data over the last 8000 years

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The ~ 2400-year cycle in atmospheric radiocarbon concentration: bispectrum of <sup>14</sup><i>C</i> data over the last 8000 years