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A new method for simulation of lunar microwave brightness temperatures and evaluation of Chang'E‐2 MRM data using thermal constraints from Diviner
Guangfei Wei;  Xiongyao Li;  Hong Gan;  David T. Blewett;  Catherine D. Neish;  Benjamin T. Greenhagen
2019
Source PublicationJournal of Geophysical Research: Planets
Pages1433-1450
Abstract

We used the bolometric brightness temperatures (TBol) derived from the Lunar Reconnaissance Orbiters Diviner Lunar Radiometer (Diviner) as an upper boundary condition in our thermal model. We then calculated temperature profiles at any local time based on our improved thermal model at low to middle latitudes (70° N/S). Based on the temperature profiles, we modeled the midnight brightness temperature at 19.35 (TB19) and 37 GHz (TB37). Comparing to the Chang'E‐1 and Chang'E‐2 (CE‐1/2) observations, we found that CE‐1 showed a better data quality than that of CE‐2, especially for the TB37 data. Assuming that the issue with the CE‐2 data is caused by heat contamination of the cold‐reference antennas, we performed an empirical normalization of the CE‐2 microwave radiometer data near midnight following the approach of Hu et al. (2017). The results show that TB difference (modeled values minus modified TB) for 19.35 GHz is less than 3.40 K for ∼80% of the pixels. At 37 GHz, ∼67% of the pixels have TB difference less than 2.88 K. Additionally, we identified some areas of low microwave temperature in our modified TB maps. These low‐TB features can be characterized by two types: (1) low TB spots at fresh craters with high rock abundance and bright rays and (2) high‐Ti lunar mare surfaces with a low content of rock fragments. Investigating these low‐TB regions with the modified TB data can reveal more information about subsurface thermal regime and properties and help us better understand the evolution of regolith on the Moon.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10390
Collection月球与行星科学研究中心
Affiliation1.Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
2.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, China
3.CAS Center for Excellence in Comparative Planetology, Hefei, China
4.Key Laboratory of Space ManufacturingTechnology, Chinese Academy of Sciences, Beijing, China
5.Analyzing and Testing Center, Guizhou Institute ofTechnology, G uiyang, China
6.Planetary Exploration Group, Johns Hopkins University Applied Physics Laboratory,Laurel, MD, USA
7.Department of Earth S ciences, Western University, London, Ontario, Canada
Recommended Citation
GB/T 7714
Guangfei Wei;Xiongyao Li;Hong Gan;David T. Blewett;Catherine D. Neish;Benjamin T. Greenhagen. A new method for simulation of lunar microwave brightness temperatures and evaluation of Chang'E‐2 MRM data using thermal constraints from Diviner[J]. Journal of Geophysical Research: Planets,2019:1433-1450.
APA Guangfei Wei;Xiongyao Li;Hong Gan;David T. Blewett;Catherine D. Neish;Benjamin T. Greenhagen.(2019).A new method for simulation of lunar microwave brightness temperatures and evaluation of Chang'E‐2 MRM data using thermal constraints from Diviner.Journal of Geophysical Research: Planets,1433-1450.
MLA Guangfei Wei;Xiongyao Li;Hong Gan;David T. Blewett;Catherine D. Neish;Benjamin T. Greenhagen."A new method for simulation of lunar microwave brightness temperatures and evaluation of Chang'E‐2 MRM data using thermal constraints from Diviner".Journal of Geophysical Research: Planets (2019):1433-1450.
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