中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A new method for simulation of lunar microwave brightness temperatures and evaluation of Chang'E‐2 MRM data using thermal constraints from Diviner

文献类型:期刊论文

作者Guangfei Wei;  Xiongyao Li;  Hong Gan;  David T. Blewett;  Catherine D. Neish;  Benjamin T. Greenhagen
刊名Journal of Geophysical Research: Planets
出版日期2019
页码1433-1450
英文摘要

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.

语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/10390]  
专题地球化学研究所_月球与行星科学研究中心
作者单位1.Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
2.Department of Earth S ciences, Western University, London, Ontario, Canada
3.Planetary Exploration Group, Johns Hopkins University Applied Physics Laboratory,Laurel, MD, USA
4.Analyzing and Testing Center, Guizhou Institute ofTechnology, G uiyang, China
5.Key Laboratory of Space ManufacturingTechnology, Chinese Academy of Sciences, Beijing, China
6.CAS Center for Excellence in Comparative Planetology, Hefei, China
7.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, China
推荐引用方式
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.

入库方式: OAI收割

来源:地球化学研究所

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