QQ客服 官方微博 反馈留言

	Estimating Surface Soil Heat Flux in Permafrost Regions Using Remote Sensing-Based Models on the Northern Qinghai-Tibetan Plateau under Clear-Sky Conditions
	Yang, Cheng1,2; Wu, Tonghua1; Wang, Jiemin1; Yao, Jimin1; Li, Ren1; Zhao, Lin1,2; Xie, Changwei1; Zhu, Xiaofan1,2; Ni, Jie1,2; Hao, Junming1,2
刊名	REMOTE SENSING
	2019-02-02
卷号	11期号:4页码:26
关键词	ground surface soil heat flux remote sensing solar time angle permafrost
ISSN号	2072-4292
DOI	10.3390/rs11040416
通讯作者	Wu, Tonghua(thuawu@lzb.ac.cn)
英文摘要	The ground surface soil heat flux (G(0)) quantifies the energy transfer between the atmosphere and the ground through the land surface. However; it is difficult to obtain the spatial distribution of G(0) in permafrost regions because of the limitation of in situ observation and complication of ground surface conditions. This study aims at developing an improved G(0) parameterization scheme applicable to permafrost regions of the Qinghai-Tibet Plateau under clear-sky conditions. We validated several existing remote sensing-based models to estimate G(0) by analyzing in situ measurement data. Based on the validation of previous models on G(0); we added the solar time angle to the G(0) parameterization scheme; which considered the phase difference problem. The maximum values of RMSE and MAE between measured G(0) and simulated G(0) using the improved parameterization scheme and in situ data were calculated to be 6.102 W/m(2) and 5.382 W/m(2); respectively. When the error of the remotely sensed land surface temperature is less than 1 K and the surface albedo measured is less than 0.02; the accuracy of estimates based on remote sensing data for G(0) will be less than 5%. MODIS data (surface reflectance; land surface temperature; and emissivity) were used to calculate G(0) in a 10 x 10 km region around Tanggula site; which is located in the continuous permafrost region with long-term records of meteorological and permafrost parameters. The results obtained by the improved scheme and MODIS data were consistent with the observation. This study enhances our understanding of the impacts of climate change on the ground thermal regime of permafrost and the land surface processes between atmosphere and ground surface in cold regions.
收录类别	SCI
WOS关键词	HETEROGENEOUS LANDSCAPE ; PARAMETERIZATION ; TEMPERATURE ; EVAPORATION ; CANOPY ; HEIFE
WOS研究方向	Remote Sensing
WOS类目	Remote Sensing
语种	英语
出版者	MDPI
WOS记录号	WOS:000460766100046
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555532
专题	寒区旱区环境与工程研究所
通讯作者	Wu, Tonghua
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Cheng,Wu, Tonghua,Wang, Jiemin,et al. Estimating Surface Soil Heat Flux in Permafrost Regions Using Remote Sensing-Based Models on the Northern Qinghai-Tibetan Plateau under Clear-Sky Conditions[J]. REMOTE SENSING,2019,11(4):26.
APA	Yang, Cheng.,Wu, Tonghua.,Wang, Jiemin.,Yao, Jimin.,Li, Ren.,...&Hao, Junming.(2019).Estimating Surface Soil Heat Flux in Permafrost Regions Using Remote Sensing-Based Models on the Northern Qinghai-Tibetan Plateau under Clear-Sky Conditions.REMOTE SENSING,11(4),26.
MLA	Yang, Cheng,et al."Estimating Surface Soil Heat Flux in Permafrost Regions Using Remote Sensing-Based Models on the Northern Qinghai-Tibetan Plateau under Clear-Sky Conditions".REMOTE SENSING 11.4(2019):26.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。