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Observed high-altitude warming and snow cover retreat over Tibet and the Himalayas enhanced by black carbon aerosols

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Table 1. (a) TOA (top-of-atmosphere) radiative forcing (W m −2 , shortwave + longwave), due to BC (direct radiative forcing; pre-industrial to present-day; not including snow albedo effect), CO 2 (pre-industrial to 400 ppm), and SO 4 (direct and indirect eff
Table 2. (a) Snow fraction (%), (b) surface albedo (%) and (c) snow depth over land (water equivalent, cm) change in response to different forcings
Figure 1. Observed snow fraction change (% decade −1 ) from 1967 to 2012. Insignificant changes (confidence interval < 75 % calculated from student’s T test) are not shown.
Figure 2. Left: (a) simulated change of snow fraction (%) due to present-day BC (vs. its pre- pre-industrial level), (b) CO 2 and (c) SO 4
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