Dependence of GCRs influx on the solar North–South asymmetry

Cho, Il-Hyun; Kwak, Young‐Sil; Chang, Heon-Young; Park, Young-Deuk; Choi, Heeyoul

doi:10.1016/j.jastp.2011.03.007

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…In addition to the solar north-south asymmetry we have also tried the total sunspot area, the solar UV variability, the atmospheric temperature in calculating correlations for comparison. We are motivated by both the accumulating evidence for the connection of solar variability to the chemistry of nitrogen oxide (NO x ) in the atmosphere as mentioned above and recent finding that the GCR influx is associated with the solar north-south asymmetry (Cho et al 2011). It is natural on the basis of what we discussed above that one may attempt to relate the solar north-south asymmetry to the chemistry of nitrogen oxide (NO x ).…”

Section: Introductionmentioning

confidence: 99%

Acidity in Precipitation and Solar North-South Asymmetry

Moon¹,

Ha²,

Kang³

et al. 2014

Journal of Astronomy and Space Sciences

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Section: Introductionmentioning

confidence: 99%

Acidity in Precipitation and Solar North-South Asymmetry

Moon¹,

Ha²,

Kang³

et al. 2014

Journal of Astronomy and Space Sciences

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“…We also investigated associations with the solar north-south asymmetry, having been motivated by the fact that the mean global temperature anomaly is smaller when the solar northern hemisphere is active than when the southern hemisphere is active (Cho et al 2012). It is well known that the magnitude of GCR influx depends on the solar north-south asymmetry (e.g., Cho et al 2011). To compare the level of possible contributions, we repeat the same analysis with the Southern Oscillation Index (SOI), which is a measure of the El Niño-Southern Oscillation (ENSO) global climate regulating phenomena.…”

Section: Introductionmentioning

confidence: 99%

Normalized Cross-Correlations of Solar Cycle and Physical Characteristics of Cloud

Chang¹

2019

Journal of Astronomy and Space Sciences

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We explore the associations between the total sunspot area, solar north-south asymmetry, and Southern Oscillation Index and the physical characteristics of clouds by calculating normalized cross-correlations, motivated by the idea that the galactic cosmic ray influx modulated by solar activity may cause changes in cloud coverage, and in turn the Earth’s climate. Unlike previous studies based on the relative difference, we have employed cloud data as a whole time-series without detrending. We found that the coverage of high-level and low-level cloud is at a maximum when the solar north-south asymmetry is close to the minimum, and one or two years after the solar north-south asymmetry is at a maximum, respectively. The global surface air temperature is at a maximum five years after the solar north-south asymmetry is at a maximum, and the optical depth is at a minimum when the solar north-south asymmetry is at a maximum. We also found that during the descending period of solar activity, the coverage of low-level cloud is at a maximum, and global surface air temperature and cloud optical depth are at a minimum, and that the total column water vapor is at a maximum one or two years after the solar maximum.

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