DOI: 10.1016/j.asr.2020.01.006
论文题名: Delineation of possible influence of solar variability and galactic cosmic rays on terrestrial climate parameters
作者: Singh A.K. ; Bhargawa A.
刊名: Advances in Space Research
ISSN: 2731177
出版年: 2020
卷: 65, 期: 7 语种: 英语
英文关键词: Cloud cover
; Cosmic ray intensity
; Global surface temperature
; Granger causality test
; Total solar irradiance (TSI)
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climatology
; Cosmic rays
; Solar energy
; Solar radiation
; Statistical tests
; Surface properties
; Cloud cover
; Cosmic ray intensity
; Global surface temperature
; Granger causality test
; Total solar irradiance
; Cosmology
英文摘要: The present paper has investigated the associations of solar activity (SA), represented by total solar irradiance (TSI), galactic cosmic rays (GCR) and terrestrial climate parameters in particular the global cloudiness and global surface temperature. To that end, we have analysed thirty five years (1983–2018) data of these parameters and have applied the Granger-causality test in order to assess whether there is any potential predictability power of one indicator to the other. The correlations among the involved parameters are tested using Vector Auto Regression (VAR) model and variance decomposition method. As a result of the above analysis, we have found that the TSI is an important factor and has contributed about 8.77 ± 0.42% in the cosmic ray intensity variations. In case of cloud cover variations, the other three parameters (TSI, cosmic ray and global surface temperature) have played a significant role. Further, the TSI changes have contributed 1.68 ± 0.03% fluctuations in the variance of the cloud cover while the cosmic ray intensity and global surface temperature have contributed about 4.89 ± 0.08% and 10.87 ± 1.41% respectively. In case of the global surface temperature anomaly both TSI and cloud covers have contributed about 5.07 ± 0.47% and 14.42 ± 2.13% fluctuations respectively. Additionally, we have also assessed the impact of internal climate oscillations like multivariate ENSO index (MEI), north Atlantic oscillations (NAO) and quasi biennial oscillations (QBO) on cloud cover variations. The contribution of these internal oscillations e.g. ENSO, NAO and QBO in cloud cover variation were reported as 7.48 ± 1.02%, 5.51 ± 0.16% and 1.36 ± 0.43% respectively. © 2020 COSPAR Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158503
Appears in Collections: 气候变化与战略
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作者单位: Physics Department, University of Lucknow, Lucknow, 226 007, India
Recommended Citation:
Singh A.K.,Bhargawa A.. Delineation of possible influence of solar variability and galactic cosmic rays on terrestrial climate parameters[J]. Advances in Space Research,2020-01-01,65(7)