Reasons for East Siberia Winter Snow Water Equivalent Increase in the Recent Decades

With the rapid warming in past few decades, snow water equivalent (SWE) winter and spring decreased generally over Northern Hemisphere, but an increasing trend occurred some areas, especially east Siberia. In this paper, we analyze sources reasons for SWE increase Siberia since 1979 document projected future changes region. The were not significant four decades until 2000s, increased rapidly thereafter. after 2000s is mainly contributed by November, followed that winter, attributed to snowfall. moisture budget diagnosis, found atmospheric dynamic-induced convergence (vertical motion effect horizontal advection of moisture) are snowfall As cold even under high radiative forcing scenario, precipitation will continue be dominated 2060s. Thereafter, with rainfall accelerated snowmelt due rising temperature, gradually shift type may turn decrease.