Influence of solar activity on climate : Poles to Tropics

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.

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Numerical Modeling of Climate (on Yakutia example)

Journal of Physics Conference Series ◽

10.1088/1742-6596/2090/1/012010 ◽

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.

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Climate bones of contention: How climate variability influences territorial, maritime, and river interstate conflicts

Journal of Peace Research ◽

10.1177/0022343320973738 ◽

2021 ◽

Vol 58 (1) ◽

pp. 132-150

Author(s):

Cody J Schmidt ◽

Bomi K Lee ◽

Sara McLaughlin Mitchell

Keyword(s):

Climate Variability ◽

Climate Changes ◽

Heat Waves ◽

World Politics ◽

Western Hemisphere ◽

Intrastate Conflict ◽

Short Term ◽

Climate Conditions ◽

Interstate Conflicts ◽

The Relationship

Many scholars examine the relationship between climate variability and intrastate conflict onset. While empirical findings in this literature are mixed, we know less about how climate changes increase the risks for conflicts between countries. This article studies climate variability using the issue approach to world politics. We examine whether climate variability influences the onset and militarization of interstate diplomatic conflicts and whether these effects are similar across issues that involve sovereignty claims for land (territory) or water (maritime, river). We focus on two theoretical mechanisms: scarcity ( abundance) and uncertainty. We measure these concepts empirically through climate deviation (e.g. droughts/floods, heat waves/cold spells) and climate volatility (greater short-term variance in precipitation/temperature). Analyses of issue claims in the Western Hemisphere and Europe (1901–2001) show that greater deviations and volatility in climate conditions increase risks for new diplomatic conflicts and militarization of ongoing issues and that climate change acts as a trigger for revisionist states.

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Solar-type periodicities in the climate variability of Northern Fennoscandia during the last three centuries: Real influence of solar activity or natural instability in the climate system

The Holocene ◽

10.1177/09596836211060487 ◽

2021 ◽

pp. 095968362110604

Author(s):

Maxim Ogurtsov ◽

Samuli Helama ◽

Risto Jalkanen ◽

Högne Jungner ◽

Markus Lindholm ◽

...

Keyword(s):

Solar Activity ◽

Climate Variability ◽

Western Siberia ◽

Climate System ◽

Solar Cycles ◽

Activity Data ◽

The Past ◽

Proxy Records ◽

Northern Fennoscandia ◽

Solar Type

Fifteen proxy records of summer temperature in Fennoscandia, Northern Europe and in Yamal and Taymir Peninsulas (Western Siberia) were analyzed for the AD 1700–2000 period. Century-long (70–100 year) and quasi bi-decadal periodicities were found from proxy records representing different parts of Fennoscandia. Decadal variation was revealed in a smaller number of records. Statistically significant correlations were revealed between the timescale-dependent components of temperature variability and solar cycles of Schwabe (~11 year), Hale (~22 year), and Gleissberg (сentury-long) as recorded in solar activity data. Combining the results from our correlation analysis with the evidence of solar-climatic linkages over the Northern Fennoscandia obtained over the past 20 years suggest that there are two possible explanations for the obtained solar-proxy relations: (a) the Sun’s activity actually influences the climate variability in Northern Fennoscandia and in some regions of the Northern Hemisphere albeit the mechanism of such solar-climatic linkages are yet to be detailed; (b) the revealed solar-type periodicities result from natural instability of climate system and, in such a case, the correlations may appear purely by chance. Multiple lines of evidence support the first assumption but we note that the second one cannot be yet rejected. Guidelines for further research to elucidate this question are proposed including the Fisher’s combined probability test in the presence of solar signal in multiple proxy records.

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On the possible influence of solar 11-year cycle on a climate of Southern Fennoscandia

Journal of Physics Conference Series ◽

10.1088/1742-6596/2103/1/012023 ◽

2021 ◽

Vol 2103 (1) ◽

pp. 012023

Author(s):

M G Ogurtsov

Keyword(s):

Solar Activity ◽

Solar Cycle ◽

Climate Variability ◽

North Atlantic Oscillation ◽

North Atlantic ◽

Proxy Records ◽

Decadal Variations

Abstract Three proxy records of Southern Fennoscandia climate variability were analyzed. It was found that their decadal variations correlate significantly (p=0.961-0.993) with a quasi 11-year solar cycle of Schwabe during AD 1706-1990. But two proxy records have significant decadal correlation with the index of summer North-Atlantic Oscillation (SNAO) as well. Taking into account that decadal periodicity in the SNAO index also has some correlation with the solar cycle of Schwabe, the revealed relations could be a result of influence of solar activity on the Southern Fennoscandian climate realizing by the complicated way. Possible causes of such complexity are discussed.

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