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An Empirical equation to estimate mineral dust concentrations from visibility observations in Northern Africa
dc.contributor.author | Camino, C |
dc.contributor.author | Cuevas, Emilio |
dc.contributor.author | Basart, Sara |
dc.contributor.author | Alonso Perez, Silvia |
dc.contributor.author | Baldasano Recio, José María |
dc.contributor.author | Terradellas, E. |
dc.contributor.author | Marticorena, B |
dc.contributor.author | Berjon, A |
dc.contributor.author | Rodriguez, S |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció |
dc.date.accessioned | 2015-11-13T19:23:05Z |
dc.date.available | 2017-03-01T01:30:19Z |
dc.date.issued | 2015-03-01 |
dc.identifier.citation | Camino, C., Cuevas, E., Basart, S., Alonso-Perez, S., Baldasano, J., Terradellas, E., Marticorena, B., Berjon, A., Rodriguez, S. An Empirical equation to estimate mineral dust concentrations from visibility observations in Northern Africa. "Aeolian research", 01 Març 2015, vol. 16, núm. March, p. 55-68. |
dc.identifier.issn | 1875-9637 |
dc.identifier.uri | http://hdl.handle.net/2117/79271 |
dc.description.abstract | This paper presents a new empirical equation relating horizontal visibility and PM10 dust concentrations. The new empirical equation (IZO-Eq) is derived from observations performed at the Izana Atmospheric Observatory (IZO, 28.30 degrees N, 16.49 degrees W, 2367 m a.s.l., Tenerife, Spain), recorded during Saharan dust outbreaks from 2003 to 2010. A filter based on relative humidity, present-weather and aerosol optical properties is applied to identify dust events. IZO-Eq is validated in the Sahel region during the dry and wet seasons (2006-2008) using data from two PM10 monitoring stations from the African Monsoon Multidisciplinary Analysis (AMMA) International Project, and data from the nearest meteorological synoptic stations. The estimated PM10, derived from IZO-Eq is compared against that those obtained by other empirical equations and dust surface concentrations from NMMB/BSC-Dust model. IZO-Eq presents better performance than the other equations in both dry and wet seasons when compared with observed PM10 at two Sahelian sites. IZO-Eq is also able to reproduce the surface concentration variability simulated by NMMB/BSC-Dust. Above 10 km of horizontal visibility, empirical equations cannot be used to estimate PM10, since above this threshold equations estimate a nearly constant PM10 value, regardless of the visibility range. A comparison between the PM10 spatial distributions derived from visibility SYNOP observations through IZO-Eq, the modelled values from the NMMB/BSC-Dust model and aerosol optical depth (AOD) retrieved from MODIS is performed for the 2006-2008 period. The different spatial distributions present a rather good agreement among them as well as to reproduce the characteristic seasonal dust features over North Africa. |
dc.format.extent | 14 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica |
dc.subject.lcsh | Mineral dust |
dc.subject.lcsh | Atmospheric aerosols |
dc.subject.lcsh | Air quality -- Measurement -- Mathematical models |
dc.subject.lcsh | Meteorology |
dc.subject.other | PM10 |
dc.subject.other | visibility |
dc.subject.other | mineral dust |
dc.subject.other | dust transport model |
dc.subject.other | MODIS-AQUA |
dc.subject.other | aerosol optical depth |
dc.subject.other | intertropical discontinuity region |
dc.subject.other | marine boundary-layer |
dc.subject.other | saharan dust |
dc.subject.other | west-africa |
dc.subject.other | desert dust |
dc.subject.other | airborne observations |
dc.subject.other | summer monsoon |
dc.subject.other | global scales |
dc.subject.other | middle-east |
dc.title | An Empirical equation to estimate mineral dust concentrations from visibility observations in Northern Africa |
dc.type | Article |
dc.subject.lemac | Pols mineral |
dc.subject.lemac | Aerosols atmosfèrics |
dc.subject.lemac | Aire -- Qualitat -- Mesurament -- Models matemàtics |
dc.subject.lemac | Meteorologia |
dc.contributor.group | Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra |
dc.identifier.doi | 10.1016/j.aeolia.2014.11.002 |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S1875963714000998 |
dc.rights.access | Open Access |
local.identifier.drac | 15597925 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/283576/EU/Monitoring Atmospheric Composition and Climate Interim Implementation/MACC II |
local.citation.author | Camino, C.; Cuevas, E.; Basart, S.; Alonso-Perez, S.; Baldasano, J.; Terradellas, E.; Marticorena, B.; Berjon, A.; Rodriguez, S. |
local.citation.publicationName | Aeolian research |
local.citation.volume | 16 |
local.citation.number | March |
local.citation.startingPage | 55 |
local.citation.endingPage | 68 |
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