Searched for: subject%3A%22Canopy%22
(1 - 19 of 19)
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Zhang, R. (author), Chen, Y. (author), Lei, Jiaxin (author), Zhou, Xin (author), Yao, P. (author), Stive, M.J.F. (author)
Mangroves can function as a ‘bio-shield’ to protect coastal communities from harsh environments because of their strong ability to attenuate wave energy. However, as mangroves are usually oversimplified as rigid cylinders in antecedent studies, the effects of complex mangrove morphology on wave attenuation have not been well researched....
journal article 2023
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Vatandaslar, Can (author), Narin, O.G. (author), Abdikan, Saygin (author)
Key message: Despite showing a cost-effective potential for quantifying vertical forest structure, the GEDI and ICESat-2 satellite LiDAR missions fall short of the data accuracy standards required by tree- and stand-level forest inventories. Abstract: Tree and stand heights are key inventory variables in forestry, but measuring them manually...
journal article 2022
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Calvo-Alvarado, Julio César (author), JIMENEZ RODRIGUEZ, C.D. (author), Solano, Juan Carlos (author), Arias-Rodríguez, Oscar (author)
Seasonal wetlands in the tropics are important habitats for local and migratory bird species. In the northwestern Pacific of Costa Rica, Palo Verde National Park has one of the most important seasonal wetlands of Central America. The management history of this wetland has shown the impact of invasive plant species such as Parkinsonia aculeata...
journal article 2022
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Ascencio, Jaime A. (author), Jacobsen, Niels G. (author), McFall, Brian C. (author), Groeneweg, Jacco (author), Vuik, V. (author), Reniers, A.J.H.M. (author)
To address the important research question of whether implicit (bottom friction) or explicit (stem drag) dissipation models are most appropriate for the prediction of wave attenuation due to aquatic vegetation, the Simulating Waves Nearshore (SWAN) spectral wave model has been extended with an explicit frequency-dependent dissipation model...
journal article 2022
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Schilperoort, B. (author), Coenders-Gerrits, Miriam (author), JIMENEZ RODRIGUEZ, C.D. (author), van Hooft, J.A. (author), van de Wiel, B.J.H. (author), Savenije, Hubert (author)
Despite the importance of forests in the water and carbon cycles, accurately measuring their contribution remains challenging, especially at night. During clear-sky nights current models and theories fail, as non-turbulent flows and spatial heterogeneity become more important. One of the standing issues is the ‘decoupling’ of the air masses...
journal article 2022
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Buckley, Mark L. (author), Lowe, Ryan J. (author), Hansen, Jeff E. (author), van Dongeren, Ap R. (author), Pomeroy, Andrew (author), Storlazzi, Curt D. (author), Rijnsdorp, D.P. (author), da Silva, Renan F. (author), Contardo, Stephanie (author), Green, Rebecca H. (author)
Wave breaking on the steep fore-reef slopes of shallow fringing reefs can be effective at dissipating incident sea-swell waves prior to reaching reef shorelines. However, wave setup and free infragravity waves generated during the sea-swell breaking process are often the largest contributors to wave-driven water levels (wave runup) at the...
journal article 2022
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Zhang, Yingyu (author), Yang, Juan (author), van Haaften, M.A. (author), Li, Linyi (author), Lu, Shenglian (author), Wen, Weiliang (author), Zheng, Xiuguo (author), Pan, Jian (author), Qian, Tingting (author)
Plant photosynthesis and biomass production are associated with the amount of intercepted light, especially the light distribution inside the canopy. Three virtual canopies (n = 80, 3.25 plants/m2) were constructed based on average leaf size of the digitized plant structures: ‘small leaf’ (98.1 cm2), ‘medium leaf’ (163.0 cm2) and ‘big leaf’ (241...
journal article 2022
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Khabbazan, S. (author), Vermunt, P.C. (author), Steele-Dunne, S.C. (author), Judge, J. (author)
The objective of this study was to investigate the effect of diurnal variation in internal and surface canopy water on L-band backscatter in the context of the influence of overpass time on agricultural applications. A unique and intensive dataset was collected during a full growing season of corn in Florida, USA in 2018. L-band data was...
conference paper 2021
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JIMENEZ RODRIGUEZ, C.D. (author)
Forest evaporation (Ei) is considered the main source of water vapor at a continental scale. Its quantification has been carried out in many ecosystems worldwide, applying the classical partitioning method to differentiate among sources of water vapor. This partitioning differentiates between transpiration (Et), soil evaporation (Es), water...
doctoral thesis 2020
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Yan, H. (author), Huang, Song (author), Zhang, C. (author), Coenders-Gerrits, Miriam (author), Wang, Guoqing (author), Zhang, Jianyun (author), Zhao, Baoshan (author), Acquah, Samuel Joe (author), Wu, Haimei (author), Fu, Hanwen (author)
Accurate estimation of transpiration (Tr) is important in the development of precise irrigation scheduling and to enhance water-use efficiency in agricultural production. In this study, the air temperature (Ta) and relative humidity (RH) were measured at three different heights (0.5, 1.0, and 1.8 m above the ground near the plant canopy)...
journal article 2020
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Zimba, H.M. (author), Coenders-Gerrits, Miriam (author), Kawawa, Banda (author), Savenije, Hubert (author), Nyambe, Imasiku (author), Winsemius, H.C. (author)
Understanding the canopy cover relationship with canopy water content and canopy temperature in the Miombo ecosystem is important for studying the consequences of climate change. To better understand these relationships, we studied the satellite data-based land surface temperature (LST) as proxy for canopy temperature, leaf area index (LAI),...
journal article 2020
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Yan, H. (author), Zhang, C. (author), Hiroki, Oue (author)
Models for predicting hourly canopy resistance (r<sub>c</sub>) and latent heat flux (LET) based on the Penman–Monteith (PM) and bulk transfer methods are presented. The micrometeorological data and LET were observed during paddy rice-growing seasons in 2010 in Japan. One approach to model r<sub>c</sub> was using an aerodynamic resistance (r...
journal article 2018
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Desmond, Cian J. (author), Watson, S.J. (author), Montavon, Christiane (author), Murphy, Jimmy (author)
The flow over densely forested terrain under neutral and non-neutral conditions is considered using commercially available computational fluid dynamics (CFD) software. Results are validated against data from a site in Northeastern France. It is shown that the effects of both neutral and stable atmospheric stratifications can be modelled...
journal article 2018
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van Emmerik, T.H.M. (author), Steele-Dunne, S.C. (author), Hut, R.W. (author), Gentine, Pierre (author), Guerin, Marceau (author), Oliveira, Rafael (author), Wagner, Jim (author), Selker, John (author), van de Giesen, N.C. (author)
Trees play a crucial role in the water, carbon and nitrogen cycle on local, regional and global scales. Understanding the exchange of momentum, heat, water, and CO 2 between trees and the atmosphere is important to assess the impact of drought, deforestation and climate change. Unfortunately, ground measurements of tree properties such as mass...
journal article 2017
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Gerrits, A.M.J. (author)
Interception is the part of the rainfall that is intercepted by the earth’s surface and which subsequently evaporates. In this definition the earth’s surface includes everything that becomes wet after a rainfall event and that dries out soon after. It includes: vegetation, soil surface, litter, build-up surface, etc. How much of the...
doctoral thesis 2010
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Bucksch, A. (author), Fleck, S. (author)
Light driven physiological processes of tree canopies need to be modelled based on detailed 3Dcanopy structure – we explore the possibilities offered by terrestrial LIDAR to automatically represent woody skeletons of leafless trees as a basis for adequate models of canopy structure. The automatic evaluation method for LIDAR data of fruit trees...
conference paper 2009
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Abd Rahman, M.Z. (author), Gorte, B.G.H. (author)
The retrieval of individual tree location from Airborne LiDAR has focused largely on utilizing canopy height. However, high resolution Airborne LiDAR offers another source of information for tree detection. This paper presents a new method for tree detection based on high points’ densities from a high resolution Airborne LiDAR. The advantage of...
conference paper 2008
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Verhoef, W. (author)
A simple analytical four-stream radiative transfer model based on Suits's differential equations is applied to the atmosphere-earth system in order to investigate the effects of the atmosphere and the view angle on remotely sensed multispectral radiance data from vegetation canopies. This scene radiation model is composed of two atmospheric...
report 1985
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Hsi, G. (author), Nath, J.H. (author)
This report presents an experimental and analysis study of wind drag within simulated forest canopy fields. The drag coefficients, aerodynamic roughness and wind velocity profiles are studied for various types of forest canopies. Furthermore, a brushy canopy field was studied which simulated the leafy portion of a forest without the tree trunks...
report 1968
Searched for: subject%3A%22Canopy%22
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