Articles | Volume 9, issue 4
The Cryosphere, 9, 1685–1699, 2015
https://doi.org/10.5194/tc-9-1685-2015
The Cryosphere, 9, 1685–1699, 2015
https://doi.org/10.5194/tc-9-1685-2015
Research article
21 Aug 2015
Research article | 21 Aug 2015

Black carbon in snow in the upper Himalayan Khumbu Valley, Nepal: observations and modeling of the impact on snow albedo, melting, and radiative forcing

H.-W. Jacobi et al.

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Short summary
We detected up to 70 ppb of black carbon (BC) in surface snow in the upper Khumbu Valley, Nepal. With an upgraded snowpack model, including radiative transfer inside the snow, we studied the impact of BC on snow albedo, melting and radiative forcing for the sensitive high altitude regions of the Himalayas. We found that due to BC, the melting of the snow can be shifted by several days up to several weeks depending on meteorological conditions. The impact of BC is larger in dirty snow.