Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/20.500.11765/11530
Identification of topographic features influencing aerosol observations at high altitude stations
Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorCollaud Coen, Martinees_ES
dc.contributor.authorAndrews, Elisabethes_ES
dc.contributor.authorAliaga, Diegoes_ES
dc.contributor.authorAndrade, Marcoses_ES
dc.contributor.authorAngelov, H.es_ES
dc.contributor.authorBukowiecki, Nicolases_ES
dc.contributor.authorEalo, Marinaes_ES
dc.contributor.authorFialho, Pauloes_ES
dc.contributor.authorFlentje, Haraldes_ES
dc.contributor.authorHallar, A. Gannetes_ES
dc.contributor.authorHooda, Rakeshes_ES
dc.contributor.authorKalapov, Ivoes_ES
dc.contributor.authorKrejci, Radovanes_ES
dc.contributor.authorLin, Neng-Hueies_ES
dc.contributor.authorMarinoni, Angelaes_ES
dc.contributor.authorMing, Jinges_ES
dc.contributor.authorNguyen, Nhat Anhes_ES
dc.contributor.authorPandolfi, Marcoes_ES
dc.contributor.authorPont, Véroniquees_ES
dc.contributor.authorRies, Ludwiges_ES
dc.contributor.authorRodríguez González, Sergioes_ES
dc.contributor.authorSchauer, Gerhardes_ES
dc.contributor.authorSellegri, Karinees_ES
dc.contributor.authorSharma, Sangeetaes_ES
dc.contributor.authorSun, Junyinges_ES
dc.contributor.authorTunved, Peteres_ES
dc.contributor.authorVelásquez, Patricioes_ES
dc.contributor.authorRuffieux, Dominiquees_ES
dc.date.accessioned2020-03-30T10:14:42Z-
dc.date.available2020-03-30T10:14:42Z-
dc.date.issued2018-
dc.identifier.citationAtmospheric Chemistry and Physics. 2018, 18(16), p. 12289–12313es_ES
dc.identifier.issn1680-7316-
dc.identifier.issn1680-7324-
dc.identifier.urihttp://hdl.handle.net/20.500.11765/11530-
dc.description.abstractHigh altitude stations are often emphasized as free tropospheric measuring sites but they remain influenced by atmospheric boundary layer (ABL) air masses due to convective transport processes. The local and meso-scale topographical features around the station are involved in the convective boundary layer development and in the formation of thermally induced winds leading to ABL air lifting. The station altitude alone is not a sufficient parameter to characterize the ABL influence. In this study, a topography analysis is performed allowing calculation of a newly defined index called ABL-TopoIndex. The ABL-TopoIndex is constructed in order to correlate with the ABL influence at the high altitude stations and long-term aerosol time series are used to assess its validity. Topography data from the global digital elevation model GTopo30 were used to calculate five parameters for 43 high and 3 middle altitude stations situated on five continents. The geometric mean of these five parameters determines a topography based index called ABL-TopoIndex, which can be used to rank the high altitude stations as a function of the ABL influence. To construct the ABL-TopoIndex, we rely on the criteria that the ABL influence will be low if the station is one of the highest points in the mountainous massif, if there is a large altitude difference between the station and the valleys or high plains, if the slopes around the station are steep, and finally if the inverse drainage basin potentially reflecting the source area for thermally lifted pollutants to reach the site is small. All stations on volcanic islands exhibit a low ABL-TopoIndex, whereas stations in the Himalayas and the Tibetan Plateau have high ABL-TopoIndex values. Spearman's rank correlation between aerosol optical properties and number concentration from 28 stations and the ABL-TopoIndex, the altitude and the latitude are used to validate this topographical approach. Statistically significant (SS) correlations are found between the 5th and 50th percentiles of all aerosol parameters and the ABL-TopoIndex, whereas no SS correlation is found with the station altitude. The diurnal cycles of aerosol parameters seem to be best explained by the station latitude although a SS correlation is found between the amplitude of the diurnal cycles of the absorption coefficient and the ABL-TopoIndex.es_ES
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectAerosoles_ES
dc.subjectHigh altitude stationses_ES
dc.subjectAtmospheric boundary layeres_ES
dc.subjectClimate monitoringes_ES
dc.titleIdentification of topographic features influencing aerosol observations at high altitude stationses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://dx.doi.org/10.5194/acp-18-12289-2018es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
Colecciones: Artículos científicos 2015-2018


Ficheros en este ítem:
  Fichero Descripción Tamaño Formato  
Collaut_Atmos_Chem_Ph...
2,98 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro sencillo del ítem



Los ítems de Arcimis están protegidos por una Licencia Creative Commons, salvo que se indique lo contrario.

Repositorio Arcimis
Nota Legal Contacto y sugerencias