9:15 AM - 9:30 AM
[AAS07-02] Effects of snow-darkening by absorbing aerosols on early spring snow melt and
summer heat waves over Eurasia.
Keywords: absorbing aerosols, snow-darkening effects, early snow melt and summer heat waves over Eurasia
The continued drying of land and surface warming over Eurasia reduce tropospheric humidity, and suppresses cloud formation, leading to atmospheric blocking conditions, with increased geopotential height and anomalous anticyclonic circulation over Eurasia. The aforementioned sequence of SDE induced changes in water and energy cycles, and associated land-atmosphere interactions from boreal spring through summer eventually lead to a doubling of the frequency of top 10% hot days, and 10-fold increase in the frequency of the top 1% hot days in the summer months over western and northern Eurasia. Impacts of snow-darkening effect of Himalayan snowpack on the Asian summer monsoon will also be discussed.