Zhang W.G.,Center for Space Science and Applications Research |
Jiang J.S.,Center for Space Science and Applications Research |
Liu H.G.,Center for Space Science and Applications Research |
Zhang X.H.,Center for Space Science and Applications Research |
And 3 more authors.
Science China Earth Sciences | Year: 2010
Investigation on Lunar polar area is almost every lunar mission's primary objective in recent years. The rationale behind it is that illumination and ice resources in this area can be potentially very helpful for constructing lunar human base. In this paper, we analyze microwave radiometric characteristics of the Moon by using the newly acquired Chang'E-1 Lunar Microwave Sounder (CELMS) data. Microwave brightness temperature at Lunar South Pole (LSP) is distributed regularly with a style of "ring-in-ring", decreasing from equator to pole. Regolith temperature gradient is bigger at lunar equator than at polar area. Brightness temperature diurnal difference decreases with observation frequency. Microwave brightness temperature distribution maps at LSP and Lunar North Pole (LNP) have been made based on the analysis. It is found that microwave brightness temperature becomes to synchronize with elevation beyond -85° latitude. This phenomenon is related to lightening condition and indicates temperaturedistribution at LSP. The brightness temperature anomaly cold points are potentially cold trap areas for water or ice while hot points imply plenty of illumination resources there. © 2010 Science in China Press and Springer Berlin Heidelberg.