首页|Quantifying Relative Contributions of Light‐Absorbing Particles From Domestic and Foreign Sources on Snow Melt at Sapporo, Japan During the 2011–2012 Winter
Quantifying Relative Contributions of Light‐Absorbing Particles From Domestic and Foreign Sources on Snow Melt at Sapporo, Japan During the 2011–2012 Winter
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NSTL
Amer Geophysical Union
Abstract Depositions of light‐absorbing particles (LAPs), such as black carbon (BC) and dust, on the snow surface modulate the snow albedo; therefore, they are considered key factors of snow‐atmosphere interaction in the present‐day climate system. However, their detailed roles have not yet been fully elucidated, mainly due to the lack of in‐situ measurements. Here, we develop a new model chain NHM‐Chem‐SMAP, which is composed of a detailed regional meteorology‐chemistry model and a multilayered physical snowpack model, and evaluate it using LAPs concentrations data measured at Sapporo, Japan during the 2011–2012 winter. NHM‐Chem‐SMAP successfully reproduces the in‐situ measured seasonal variations in the mass concentrations of BC and dust in the surface snowpack. Furthermore, we find that LAPs from domestic and foreign sources played a role in shortening the snow cover duration by 5 and 10?days, respectively, compared to the completely pure snow condition.
NSTL
Amer Geophysical Union
