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	A study of variation characteristics of Gobi broadband emissivity based on field observational experiments in northwestern China
	Zheng, Zhi-yuan1,2,3; Wei, Zhi-gang1,2; Wen, Zhi-ping1; Dong, Wen-jie1; Li, Zhen-chao3; Wen, Xiao-hang4,5; Zhu, Xian2,5; Chen, Chen2,5; Hu, Shan-shan2,5
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2018-02-01
卷号	131期号:3-4页码:1357-1368
关键词	Northwestern China Arid and semiarid areas Field observational experiments Typical bare soil underlying surface Gobi broadband emissivity
ISSN号	0177-798X
DOI	10.1007/s00704-017-2056-2
通讯作者	Wei, Zhi-gang(wzg@bnu.edu.cn)
英文摘要	Land surface emissivity is a significant variable in energy budgets, land cover assessments, and environment and climate studies. However, the assumption of an emissivity constant is being used in Gobi broadband emissivity (GbBE) parameterization scheme in numerical models because of limited knowledge surrounding the spatiotemporal variation characteristics of GbBE. To address this issue, we analyzed the variation characteristics of GbBE and possible impact factor-surface soil moisture based on long-term continuous and high temporal resolution field observational experiments over a typical Gobi underlying surface in arid and semiarid areas in northwestern China. The results indicate that GbBE has obvious daily and diurnal variation features, especially diurnal cycle characteristics. The multi-year average of the daily average of GbBE is in the range of 0.932 to 0.970 with an average of 0.951 +/- 0.008, and the average diurnal GbBE is in the range of 0.880 to 0.940 with an average of 0.906 +/- 0.018. GbBE varies with surface soil moisture content. We observed a slight decrease in GbBE with an increase in soil moisture, although this change was not very obvious because of the low soil moisture in this area. Nevertheless, we think that soil moisture must be one of the most significant impact factors on GbBE in arid and semiarid areas. Soil moisture must be taken into account into the parameterization schemes of bare soil broadband emissivity in land surface models. Additional field experiments and studies should be carried out in order to clarify this issue.
收录类别	SCI
WOS关键词	LAND-SURFACE EMISSIVITY ; THERMAL INFRARED EMISSIVITY ; 8-12 MU-M ; ANGULAR VARIATION ; BARE SOILS ; TEMPERATURE ; MODELS ; DESERT ; ALBEDO ; REFLECTANCE
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000423574800035
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558078
专题	寒区旱区环境与工程研究所
通讯作者	Wei, Zhi-gang
作者单位	1.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China 2.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China 4.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Sichuan, Peoples R China 5.Beijing Normal Univ, Future Earth Res Inst, Zhuhai Joint Innovat Ctr Climate Environm Ecosyst, Zhuhai, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Zhi-yuan,Wei, Zhi-gang,Wen, Zhi-ping,et al. A study of variation characteristics of Gobi broadband emissivity based on field observational experiments in northwestern China[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2018,131(3-4):1357-1368.
APA	Zheng, Zhi-yuan.,Wei, Zhi-gang.,Wen, Zhi-ping.,Dong, Wen-jie.,Li, Zhen-chao.,...&Hu, Shan-shan.(2018).A study of variation characteristics of Gobi broadband emissivity based on field observational experiments in northwestern China.THEORETICAL AND APPLIED CLIMATOLOGY,131(3-4),1357-1368.
MLA	Zheng, Zhi-yuan,et al."A study of variation characteristics of Gobi broadband emissivity based on field observational experiments in northwestern China".THEORETICAL AND APPLIED CLIMATOLOGY 131.3-4(2018):1357-1368.

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