20160501 20160511 20160521 20160531 20160610 20160620 20160630 20160710 20160720 20160730 20160809 20160819 20160829 20160908 20160918 20160928 20161008 20161018 SM (cm3 . cm-3) 20160501 20160511 20160521 20160531 20160610 20160620 20160630 20160710 20160720 20160730 20160809 20160819 20160829 20160908 20160918 20160928 20161008 20161018 0.5 0.4 0.3 0.2 SM (cm3 . cm-3) 20160501 20160511 20160521 20160531 20160610 20160620 20160630 20160710 20160720 20160730 20160809 20160819 20160829 20160908 20160918 20160928 20161008 20161018 0.5 0.4 0.3 0.2 SM (cm3 . cm-3) 0.7 0.6 0.6 0.1 0.1 0 0 Date (a) 0.8 0.8 0.7 0.7 0.6 0.6 0.1 0.1 0 0 Date (c) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 SEPTEMBER 2020 IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE 20160501 20160511 20160521 20160531 20160610 20160620 20160630 20160710 20160720 20160730 20160809 20160819 20160829 20160908 20160918 20160928 20161008 20161018 SM (cm3 . cm-3) 0.8 0.7 20160501 20160511 20160521 20160531 20160610 20160620 20160630 20160710 20160720 20160730 20160809 20160819 20160829 20160908 20160918 20160928 20161008 20161018 SM (cm3 . cm-3) 0.8 0.5 0.4 0.3 0.2 Date (b) 0.5 0.4 0.3 0.2 Date (d) 0.9 Sites: A1 A2 B1 B2 B4 B5 B7 B8 C3 C5 C7 D1 D3 D4 D6 D7 ELU EMU ERM ERD (See Figure 2) A4 B3 B6 C2 C6 D2 D5 D8 ERU Date (e) FIGURE 10. Different-depth SM time series at multiple sites in the NSO: (a) 3 cm, (b) 5 cm, (c) 10 cm, (d) 20 cm, and (e) 30 cm. 33