Influence of lunar topography on simulated surface temperature

	Influence of lunar topography on simulated surface temperature
	Meng Zhiguo1,2,3 ; Xu Yi 2; Cai Zhanchuan 2; Chen Shengbo 1; Lian Yi 1; Huang Hang 1
刊名	ADVANCES IN SPACE RESEARCH
	2014-11-15
卷号	54 期号:10 页码:2131-2139
关键词	Surface temperature Moon topography Improved Racca model LAM data Effective solar illumination
英文摘要	The surface temperature of the Moon is one of the essential parameters for the lunar exploration, especially to evaluate the Moon thermophysical features. The distribution of the temperature is heavily influenced by the Moon topography, which, however, is rarely studied in the state-of-art surface temperature models. Therefore, this paper takes the Moon topography into account to improve the surface temperature model, Racca model. The main parameters, such as slopes along the longitude and latitude directions, are estimated with the topography data from Chang'E-1 satellite and the Horn algorithm. Then the effective solar illumination model is then constructed with the slopes and the relative position to the subsolar point. Finally, the temperature distribution over the Moon surface is obtained with the effective illumination model and the improved Racca model. The results indicate that the distribution of the temperature is very sensitive to the fluctuation of the Moon surface. The change of the surface temperature is up to 150 K in some places compared to the result without considering the topography. In addition, the variation of the surface temperature increases with the distance from the subsolar point and the elevation, along both latitude and longitude directions. Furthermore, the simulated surface temperature coincides well with the brightness temperature in 37 GHz observed by the microwave sounder onboard Chang'E-2 satellite. The corresponded emissivity map not only eliminates the influence of the topography, but also hints the inherent properties of the lunar regolith just below the surface. Last but not the least, the distribution of the permanently shadowed regions (PSRs) in the lunar pole area is also evaluated with the simulated surface temperature result. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000344825000019
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6452]
专题	国家天文台_月球与深空探测研究部
作者单位	1.Jilin Univ, Coll Geoexplorat Sci & Technol, Changchun 130026, Peoples R China 2.Macau Univ Sci & Technol, Space Explorat Lab, Macao, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Lunar & Planetary Explorat, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Meng Zhiguo,Xu Yi,Cai Zhanchuan,et al. Influence of lunar topography on simulated surface temperature[J]. ADVANCES IN SPACE RESEARCH,2014,54(10):2131-2139.
APA	Meng Zhiguo,Xu Yi,Cai Zhanchuan,Chen Shengbo,Lian Yi,&Huang Hang.(2014).Influence of lunar topography on simulated surface temperature.ADVANCES IN SPACE RESEARCH,54(10),2131-2139.
MLA	Meng Zhiguo,et al."Influence of lunar topography on simulated surface temperature".ADVANCES IN SPACE RESEARCH 54.10(2014):2131-2139.