QQ客服 官方微博 反馈留言

	Aggregation of land surface parameters in the oasis-desert systems of north-west China
	Wang, J; Bastiaanssen, WGM; Ma, YM; Pelgrum, H
刊名	HYDROLOGICAL PROCESSES
	1998-10-01
卷号	12期号:13-14页码:2133-2147
关键词	land surface representative parameters aggregation rule remote sensing HEIFE
ISSN号	0885-6087
通讯作者	Wang, J()
英文摘要	Aggregation rules for determining mesoscale representative land surface parameters from their patch-scale counterparts have been suggested from previous geld work over the last decade. A selected number of these rules are tested using field data collected in the framework of HEIFE (Heihe River Basin Field Experiment on Land Surface Processes, 1990-1993, China). Data from the stations of the Zhangye, Linze, Gobi and sand deserts have been used. Surface albedo and surface roughness for these four patches were aggregated in a relatively simple manner and the results match the physical expectations. The aggregation rules for surface resistance to evaporation, however, gave strongly diverging predictions (min. 277 to max. 5356 s m(-1)). Comparing with remote sensing date, which comprise a full natural variability of land surface types, revealed that area effective values for surface albedo, surface emissivity and surface roughness for the momentum obtained from the four patches were similar to the values obtained from the distributed remote sensing estimations and aggregation rules. The remote sensing algorithm SEBAL provides distributed estimates of vertical temperature and vapour pressure differences in association with the sensible and latent heat fluxes. Applying area average, flux matching schemes, area-representative values for aerodynamic and surface resistance were obtained. Because of the mathematical flux matching, the representative value for the areal surface roughness length for heat transport in HEIFE is three times larger than for momentum transport. It is demonstrated that, instead of four patches, the area-representative surface resistance and the surface roughness for heat transport need to be derived from a full spectrum of their component values, i.e. the full natural variability in the heterogeneous terrain should be understood. (C) 1998 John Wiley & Sons, Ltd.
收录类别	SCI
WOS关键词	HETEROGENEOUS TERRAIN ; ROUGHNESS LENGTHS ; HEAT-FLUX ; MODELS ; SCALE ; SCHEME
WOS研究方向	Water Resources
WOS类目	Water Resources
语种	英语
出版者	JOHN WILEY & SONS LTD
WOS记录号	WOS:000077082800014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556634
专题	寒区旱区环境与工程研究所
通讯作者	Wang, J
作者单位	Chinese Acad Sci, Lanzhou Inst Plateau Atmospher Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, J,Bastiaanssen, WGM,Ma, YM,et al. Aggregation of land surface parameters in the oasis-desert systems of north-west China[J]. HYDROLOGICAL PROCESSES,1998,12(13-14):2133-2147.
APA	Wang, J,Bastiaanssen, WGM,Ma, YM,&Pelgrum, H.(1998).Aggregation of land surface parameters in the oasis-desert systems of north-west China.HYDROLOGICAL PROCESSES,12(13-14),2133-2147.
MLA	Wang, J,et al."Aggregation of land surface parameters in the oasis-desert systems of north-west China".HYDROLOGICAL PROCESSES 12.13-14(1998):2133-2147.

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。