Possible manifestation of nonlinear effects when solar activity affects climate changes

2010 ◽  
Vol 50 (1) ◽  
pp. 15-20 ◽  
Author(s):  
M. G. Ogurtsov ◽  
O. M. Raspopov ◽  
M. Oinonen ◽  
H. Jungner ◽  
M. Lindholm
Keyword(s):  
Solar Activity ◽  
Climate Changes ◽  
Nonlinear Effects

The role of solar activity in observed climate changes in the 20th century

2017 ◽  
Vol 57 (6) ◽  
pp. 637-644 ◽  
Author(s):  
G. A. Zherebtsov ◽  
V. A. Kovalenko ◽  
K. E. Kirichenko
Keyword(s):  
Solar Activity ◽  
20Th Century ◽  
Climate Changes

scholarly journals Radiocarbon Wiggle-Match Dating of Bulk Sediments—How Accurate can It Be?

Radiocarbon ◽  
2013 ◽  
Vol 55 (3) ◽  
pp. 1173-1186 ◽  
Author(s):  
Anette Mellström ◽  
Raimund Muscheler ◽  
Ian Snowball ◽  
Wenxin Ning ◽  
Eeva Haltia
Keyword(s):  
Solar Activity ◽  
High Resolution ◽  
Confidence Interval ◽  
Climate Changes ◽  
Plant Macrofossils ◽  
Southern Sweden ◽  
Varved Sediments ◽  
Uncertainty Range ◽  
Climate Studies ◽  
Reservoir Age

We used the radiocarbon wiggle-match dating technique to date the varved sediments of Lake Gyltigesjön in southern Sweden with the main aim to construct an accurate chronology covering the period between about 3000 and 2000 cal BP. Wiggle-match dating was applied to bulk sediments to evaluate the possibility of constructing accurate chronologies in the absence of terrestrial plant macrofossils and when the amount of old carbon in the sediments is unknown. Facilitated by a floating varve chronology and relatively stable 14C reservoir ages, the results show the possibility to assess the contribution of old carbon solely based on the 14C wiggle-matching of bulk sediments. We confirm the wiggle-matched chronology and the 14C reservoir age of approximately 260 yr by cross-checking the results with 14C dating of macrofossils. The obtained calibrated ages based on bulk sediments have an uncertainty range of about 60–65 yr (95.4% confidence interval). This study confirms that 14C wiggle-match dating of bulk sediments is a viable tool when constructing high-resolution chronologies. The method is especially useful in Sun-climate studies since the timing between solar activity variations (expressed as 14C variations) and climate changes can be accurately determined.

Deep solar activity minima, sharp climate changes, and their impact on ancient civilizations

2013 ◽  
Vol 53 (8) ◽  
pp. 917-921 ◽  
Author(s):  
O. M. Raspopov ◽  
V. A. Dergachev ◽  
G. I. Zaitseva ◽  
M. G. Ogurtsov
Keyword(s):  
Solar Activity ◽  
Climate Changes ◽  
Ancient Civilizations

Decadal- to centennial-scale climate changes over the last 2000 yr recorded from varved sediments of Lake Kusai, northern Qinghai-Tibetan Plateau

2019 ◽  
Vol 92 (2) ◽  
pp. 340-351 ◽  
Author(s):  
Weihan Jia ◽  
Xingqi Liu
Keyword(s):  
Solar Activity ◽  
Tibetan Plateau ◽  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Climate Changes ◽  
Authigenic Carbonates ◽  
Temperature Changes ◽  
Effective Moisture ◽  
Scale Temperature ◽  
Varved Sediment

AbstractHigh-resolution climate archives of the Late Holocene are essential in the study of paleoclimatic dynamics and for understanding the importance of natural and anthropogenic influences on past and future climate changes. Here, we present well-dated X-ray fluorescence scanning records retrieved from a varved sediment core from Lake Kusai. These records show the decadal- to centennial-scale paleoclimatic variability of the northern Qinghai-Tibetan Plateau over the last 2000 yr. Ca is mainly related to the precipitation of authigenic carbonates and is a proxy for temperature changes. The Ca record of Lake Kusai is well-correlated with the variations and periodicities of solar activity. Therefore, solar output can be suggested as being the predominant forcing mechanism of decadal- to centennial-scale temperature fluctuations over the last 2000 yr. The evolution of effective moisture was inferred from the log-ratios of Rb/Sr, which demonstrated synchronous changes with the typical Indian summer monsoon record from Dongge Cave. These results indicate that the decadal- to centennial-scale effective moisture evolution of the northern Qinghai-Tibetan Plateau is mainly influenced by the Indian summer monsoon. Additionally, we have not found the evident periodicities of solar activity in our effective moisture record over the last 2000 yr.

scholarly journals Influence of solar activity on climate : Poles to Tropics

MAUSAM ◽  
2021 ◽  
Vol 62 (4) ◽  
pp. 653-658
Author(s):  
NELOY KHARE
Keyword(s):  
Solar Activity ◽  
Climate Variability ◽  
Climate Changes ◽  
Climate Dynamics ◽  
Geographical Region ◽  
Proxy Data ◽  
Tropical Regions ◽  
Time Control ◽  
Solar Influence

Solar activities are directly or indirectly responsible for climate variability around the globe. Evidences of such correspondences between solar activities and palaeoclimatic proxy data have been reported from polar as well as tropical regions, suggesting solar influence over climate dynamics. However, these findings need to be further strengthened by covering vast geographical region for generating palaeoclimatic data and corresponding variations in solar activities. A better time control on proxy data is essential to arrive at conclusive understanding and plausible causal linkages between solar activity and climate changes from poles to tropics.

scholarly journals Numerical Modeling of Climate (on Yakutia example)

2021 ◽  
Vol 2090 (1) ◽  
pp. 012010
Author(s):  
O A Pomortsev ◽  
E P Kashkarov ◽  
A A Pomortseva
Keyword(s):  
Time Series ◽  
Numerical Modeling ◽  
Solar Activity ◽  
Climate Variability ◽  
Climate Changes ◽  
Meteorological Station ◽  
Current Century ◽  
Heat And Moisture ◽  
First Time

Abstract Numerical modeling of time series of observations of Yakutsk meteorological station was used for the first time to construct a model of heat and moisture climate variability over the course of a century cycle of solar activity (SA). The lag of precipitation relative to temperature for ¼ of the rhythmic wave was revealed. Consecutive change of climatic phases: cold-wet (CW) warm-wet (WW), cold-dry (CD) and warm-dry (WD) has been established. The nonlinearity of the solar-tropospheric relations at level of intra- and secular oscillations is confirmed. The trends and anomalies of climate changes and permafrost response for the next decades and the current century as a whole are determined.

Influence of Magnetic Fields on Solar Hydrodynamics: Experimental Results

1977 ◽  
Vol 36 ◽  
pp. 143-180 ◽  
Author(s):  
J.O. Stenflo
Keyword(s):  
Solar Activity ◽  
Energy Balance ◽  
Magnetic Fields ◽  
Solar Atmosphere ◽  
General Problem ◽  
Solar Rotation ◽  
Active Regions ◽  
Physical Conditions ◽  
Dynamic Phenomena

It is well-known that solar activity is basically caused by the Interaction of magnetic fields with convection and solar rotation, resulting in a great variety of dynamic phenomena, like flares, surges, sunspots, prominences, etc. Many conferences have been devoted to solar activity, including the role of magnetic fields. Similar attention has not been paid to the role of magnetic fields for the overall dynamics and energy balance of the solar atmosphere, related to the general problem of chromospheric and coronal heating. To penetrate this problem we have to focus our attention more on the physical conditions in the ‘quiet’ regions than on the conspicuous phenomena in active regions.

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