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. 2014 Mar 5;9(3):e90705. doi: 10.1371/journal.pone.0090705

Figure 4. Spectral albedo measured under cloudless conditions around noon at Union Glacier Camp.

Figure 4

Color indicates the dates: 06.12.2012 (Red); 12.12.2012 (Blue); 13.12.2012 (Green). Note that the narrow spectral variations in figure 4a have no physical meaning and are due to insignificant misalignments in the grating of our scanning double monochromator when measuring sequentially the up- and downwelling global radiation.