Figure.3 (IMAGE)

Research Organization of Information and Systems

Figure.3

Caption

(a) Time series of beryllium-7 concentrations at site S17 for 5–12 January 2017, corresponding to. White (gray) bars indicate daytime (nighttime) beryllium-7  concentrations. The average concentration in the daytime (nighttime) was 3.85 (4.68) mBq/m3 with a standard deviation of 0.36 (0.54) mBq/m3, respectively. (b) Time series of wind speed (black line) and wind direction (solid circles) at site S17. Gray shading corresponds to nighttime sampling.

Credit

Naohiko Hirasawa from National Institute of Polar Research, Japan

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