• Arvind Dubey

We have analysed the cosmic ray diurnal amplitude on annual basis with the Sunspot Number (Rz), Solar flare index, geomagnetic activity index (Ap) and disturbance storm time index (Dst) for the period of 1986-2017; i.e., covering solar cycle 22, 23 and major part of cycle 24, we have used neutron monitor data from Kiel and Moscow Neutron monitoring stations. The diurnal amplitude (%) of both the stations shows a positive correlation with sunspot number, solar flare index and geomagnetic index. Correlation with Disturbance storm time index Dst shows a negative value with the diurnal amplitude.

Cosmic Ray Daily Variation, Sunspot Number, Geomagnetic activity Index Ap, Disturbance storm time index Dst.

"Variability in cosmic ray diurnal anisotropy together with solar and geomagnetic parameters", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.434-437, August-2018, Available :http://www.jetir.org/papers/JETIR1808060.pdf

"Variability in cosmic ray diurnal anisotropy together with solar and geomagnetic parameters", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp434-437, August-2018, Available at : http://www.jetir.org/papers/JETIR1808060.pdf