Advances in Astronomy / 2019 / Article / Fig 1

Research Article

Study of Chang’E-2 Microwave Radiometer Data in the Lunar Polar Region

Figure 1

The data shown in (a)–(g) is selected in the latitude zones 20° N/S, 80° N/S, and 85° N/S, respectively. The upper part of (a)–(d) represents the fact that the TB of channel 1 and channel 4 varies during the whole observation period in daytime and nighttime at latitude 20° N ((a); (b)) and 20° S ((c); (d)), respectively. The bottom part of (a)–(d) shows the changes of lunar local time converted from “hour angle” of the corresponding TB data. Lunar local time varies with date nearly uniformly, so data diagram represents the TB variations in a half lunation cycle. The data shown in (e) represents the TB variations of channel 1 and channel 4 at 80° N and 80° S from top to bottom. The variations of TB and TB ratio between channel 1 and channel 4 are shown in (f) and (g) at 85° N (f) and 85° S (g) from top to bottom.

(a)
(b)
(c)
(d)
(e)
(f)
(g)

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