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dc.contributor.authorWere, A.
dc.contributor.authorVillagarcía, L.
dc.contributor.authorDomingo Poveda, Francisco
dc.contributor.authorAlados Arboledas, Lucas 
dc.contributor.authorPuigdefábregas, J.
dc.date.accessioned2014-06-27T09:25:26Z
dc.date.available2014-06-27T09:25:26Z
dc.date.issued2007
dc.identifier.citationWere, A.; et al. Analysis of effective resistance calculation methods and their effect on modelling evapotranspiration in two different patches of vegetation in semi-arid SE Spain. Hydrology and Earth System Sciences, 11(5): 1529-1542 (2007). [http://hdl.handle.net/10481/32388]es_ES
dc.identifier.issn1027-5606
dc.identifier.urihttp://hdl.handle.net/10481/32388
dc.description.abstractEffective parameters are of major importance in modelling surface fluxes at different scales of spatial heterogeneity. Different ways to obtain these effective parameters for their use in meso-scale and GCM models have been studied. This paper deals with patch-scale heterogeneity, where effective resistances were calculated in two patches with different vegetation (Retama sphaerocarpa (L.) Boiss shrubs, and herbaceous plants) using different methods: aggregating soil and plant resistances in parallel, in series or by an average of both. Effective aerodynamic resistance was also calculated directly from patch fluxes. To assess the validity of the different methods used, the Penman-Monteith equation was used with effective resistances to estimate the total λE for each patch. The λE estimates found for each patch were compared to Eddy Covariance system measurements. Results showed that for effective surface resistances, parallel aggregation of soil and plant resistances led to λE estimates closer to the measured λE in both patches (differences of around 10%). Results for effective aerodynamic resistances differed depending on the patch considered and the method used to calculate them. The use of effective aerodynamic resistances calculated from fluxes provided less accurate estimates of λE compared to the measured values, than the use of effective aerodynamic resistances aggregated from soil and plant resistances. The results reported in this paper show that the best way of aggregating soil and plant resistances depends on the type of resistance, and the type of vegetation in the patch.es_ES
dc.description.sponsorshipThis work received financial support from several different research projects: the PROBASE (ref.: CGL2006-11619/HID) and CANOA (ref.: CGL2004-04919-C02-01/HID) projects funded by the Spanish Ministry of Education and Science; and the BACAEMA (“Balance de carbono y de agua en ecosistemas de matorral mediterráneo en Andalucía: Efecto del cambio climático”, RNM-332) and CAMBIO (“Efectos del cambio global sobre la biodiversidad y el funcionamiento ecosistémico mediante la identificación de áreas sensibles y de referencia en el SE ibérico”, RNM 1280) projects funded by the regional government Junta de Andalucía. The first author enjoyed a pre-doctoral grant from the Spanish Ministry of Science and Technology.es_ES
dc.language.isoenges_ES
dc.publisherCopernicus Publicationses_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 Licensees_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es_ES
dc.subjectBoundary layeres_ES
dc.subjectSensible heates_ES
dc.subjectAerodynamic conductanceses_ES
dc.subjectHeterogeneous surfaceses_ES
dc.subjectMeteorological modelses_ES
dc.subjectFlux measurementses_ES
dc.subjectTurbulent fluxeses_ES
dc.subjectSoutheast Spaines_ES
dc.subjectLand surfaceses_ES
dc.subjectSparse cropses_ES
dc.titleAnalysis of effective resistance calculation methods and their effect on modelling evapotranspiration in two different patches of vegetation in semi-arid SE Spaines_ES
dc.typejournal articlees_ES
dc.rights.accessRightsopen accesses_ES


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