Influence of Eurasian snow cover

Bamazi and Shukla shows that Eurasian snow covers are inversely correlated with Indian summer precipitation by comparing the snow cover obtained from the National Oceanic and Atmospheric Administration (NOAA/ National Environmental Satellite, Data and Information Service (NEDIS) and Indian summer monsoon rainfall obtained from 306 rain gauge station all over India (Mooley and Parthasarathy 1984, Parthasarathy et al. 1994)

 Correlation coefficient between DJFM snow cover and JJAS Indian monsoon rainfall on left hand side and Correlation coefficient between AM snow cover and JJAS Indian monsoon rainfall on right hand side. Results are based on data for the period 1973–94. Correlations of magnitudes 0.37 and 0.43 are significant at 90% and 95% confidence levels, respectively.

Interannual variability of standardized winter snow cover anomalies and JJAS Indian monsoon rainfall anomalies for (a) western Eurasia (b) Eurasia (c) southern Eurasia (d) Himalayas.  Correlation coefficient obtained for the time period 1973–94 is indicated on the lower right of each panel. Axis for the rainfall values is reversed. Correlation coefficient of 0.43 is significant at 95% confidence level