Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain

The diverse sources of uncertainty associated with the calculation of rainfall kinetic energy and rainfall erosivity, calculated from precipitation data, were investigated at a range of temporal and spatial scales in a mountainous river basin (504 km2) in the south-eastern Pyrenees. The sources of u...

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Detalles Bibliográficos
Autores: Catari Yujra, Gusman, Latron, Jérôme, Gallart Gallego, Francesc
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:158299
Acceso en línea:https://ddd.uab.cat/record/158299
https://dx.doi.org/urn:doi:10.5194/hess-15-679-2011
Access Level:acceso abierto
Palabra clave:Erosivity
Rainfall
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spelling Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE SpainCatari Yujra, GusmanLatron, JérômeGallart Gallego, FrancescErosivityRainfallThe diverse sources of uncertainty associated with the calculation of rainfall kinetic energy and rainfall erosivity, calculated from precipitation data, were investigated at a range of temporal and spatial scales in a mountainous river basin (504 km2) in the south-eastern Pyrenees. The sources of uncertainty analysed included both methodological and local sources of uncertainty and were (i) tipping-bucket rainfall gauge instrumental errors, (ii) the efficiency of the customary equation used to derive rainfall kinetic energy from intensity, (iii) the efficiency of the regressions obtained between daily precipitation and rainfall erosivity, (iv) the temporal variability of annual rainfall erosivity values, and the spatial variability of (v) annual rainfall erosivity values and (vi) long-term erosivity values. The differentiation between systematic (accuracy) and random (precision) errors was taken into account in diverse steps of the analysis. The results showed that the uncertainty associated with the calculation of rainfall kinetic energy from rainfall intensity at the event and station scales was as high as 30%, because of insufficient information on rainfall drop size distribution. This methodological limitation must be taken into account for experimental or modelling purposes when rainfall kinetic energy is derived solely from rainfall intensity data. For longer temporal scales, the relevance of this source of uncertainty remained high if low variability in the types of rain was supposed. Temporal variability of precipitation at wider spatial scales was the main source of uncertainty when rainfall erosivity was calculated on an annual basis, whereas the uncertainty associated with long-term erosivity was rather low and less important than the uncertainty associated with other model factors such as those in the RUSLE, when operationally used for long-term soil erosion modelling. 22011-01-0120112011-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/158299https://dx.doi.org/urn:doi:10.5194/hess-15-679-2011reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 211732open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1582992026-06-06T12:50:31Z
dc.title.none.fl_str_mv Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
title Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
spellingShingle Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
Catari Yujra, Gusman
Erosivity
Rainfall
title_short Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
title_full Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
title_fullStr Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
title_full_unstemmed Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
title_sort Assessing the sources of uncertainty associated with the calculation of rainfall kinetic energy and erosivity - application to the Upper Llobregat Basin, NE Spain
dc.creator.none.fl_str_mv Catari Yujra, Gusman
Latron, Jérôme
Gallart Gallego, Francesc
author Catari Yujra, Gusman
author_facet Catari Yujra, Gusman
Latron, Jérôme
Gallart Gallego, Francesc
author_role author
author2 Latron, Jérôme
Gallart Gallego, Francesc
author2_role author
author
dc.subject.none.fl_str_mv Erosivity
Rainfall
topic Erosivity
Rainfall
description The diverse sources of uncertainty associated with the calculation of rainfall kinetic energy and rainfall erosivity, calculated from precipitation data, were investigated at a range of temporal and spatial scales in a mountainous river basin (504 km2) in the south-eastern Pyrenees. The sources of uncertainty analysed included both methodological and local sources of uncertainty and were (i) tipping-bucket rainfall gauge instrumental errors, (ii) the efficiency of the customary equation used to derive rainfall kinetic energy from intensity, (iii) the efficiency of the regressions obtained between daily precipitation and rainfall erosivity, (iv) the temporal variability of annual rainfall erosivity values, and the spatial variability of (v) annual rainfall erosivity values and (vi) long-term erosivity values. The differentiation between systematic (accuracy) and random (precision) errors was taken into account in diverse steps of the analysis. The results showed that the uncertainty associated with the calculation of rainfall kinetic energy from rainfall intensity at the event and station scales was as high as 30%, because of insufficient information on rainfall drop size distribution. This methodological limitation must be taken into account for experimental or modelling purposes when rainfall kinetic energy is derived solely from rainfall intensity data. For longer temporal scales, the relevance of this source of uncertainty remained high if low variability in the types of rain was supposed. Temporal variability of precipitation at wider spatial scales was the main source of uncertainty when rainfall erosivity was calculated on an annual basis, whereas the uncertainty associated with long-term erosivity was rather low and less important than the uncertainty associated with other model factors such as those in the RUSLE, when operationally used for long-term soil erosion modelling.
publishDate 2011
dc.date.none.fl_str_mv 2
2011-01-01
2011
2011-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/158299
https://dx.doi.org/urn:doi:10.5194/hess-15-679-2011
url https://ddd.uab.cat/record/158299
https://dx.doi.org/urn:doi:10.5194/hess-15-679-2011
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 211732
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/3.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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repository.mail.fl_str_mv
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