Daily precipitation variations and their cumulative percentages at different meteorological stations close to the study glaciers in the Tibetan Plateau from October 1, 2010 to the sampling dates in May 2011.

<p>Thin columns stand for daily precipitations while solid curves for their cumulative percentages calculated backward. Horizontal dashed lines represent the ratios of net accumulation amounts above the depths of the top and bottom limits of snow layer with the peak β radioactivity to the total net accumulation amount in the each study snow pit. The vertical dashed lines demonstrate the dates that the horizontal dashed lines intersect the curve of precipitation cumulative percentage. The dates determined using this technique correspond to the starting and ending dates of the deposition of Fukushima fallout on the surfaces of the Tibetan Plateau glaciers.