Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 486511
Title Estimation of Aerodynamic Roughness Length over Oasis in the Heihe River Basin by Utilizing Remote Sensing and Ground Data
Author(s) Chen, Q.; Jia, L.; Hutjes, R.W.A.; Menenti, M.
Source Remote Sensing 7 (2015)4. - ISSN 2072-4292 - p. 3690 - 3709.
DOI https://doi.org/10.3390/rs70403690
Department(s) Earth Observation and Environmental Informatics
Earth System Science
Climate Resilience
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) laser altimeter measurements - time-series analysis - leaf-area index - surface-roughness - vegetation - parameters - canopy - forest - lidar - displacement
Abstract Most land surface models require information on aerodynamic roughness length and its temporal and spatial variability. This research presents a practical approach for determining the aerodynamic roughness length at fine temporal and spatial resolution over the landscape by combining remote sensing and ground measurements. The basic framework of Raupach, with the bulk surface parameters redefined by Jasinski et al., has been applied to optical remote sensing data collected by the HJ-1A/1B satellites. In addition, a method for estimating vegetation height was introduced to derive the aerodynamic roughness length, which is preferred by users over the height-normalized form. Finally, mapping different vegetation classes was validated taking advantage of the data-dense field experiments conducted in the Heihe Watershed Allied Telemetry Experimental Research (HiWATER) project. Overall, the roughness model performed well against the measurements collected at most HiWATER flux tower sites. However, deviations still occurred at some sites, which have been further analyzed.
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