Mostra el registre d'ítem simple
Optimizing CALIPSO saharan dust retrievals
dc.contributor.author | Amiridis, Vassilis |
dc.contributor.author | Wandinger, Ulla |
dc.contributor.author | Marinou, E. |
dc.contributor.author | Giannakaki, E. |
dc.contributor.author | Tsekeri, A. |
dc.contributor.author | Basart Alpuente, Sara |
dc.contributor.author | Kazadzis, Stylianos |
dc.contributor.author | Gkikas, A. |
dc.contributor.author | Taylor, M. |
dc.contributor.author | Baldasano Recio, José María |
dc.contributor.author | Ansmann, Albert |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria |
dc.date.accessioned | 2014-03-11T19:00:42Z |
dc.date.available | 2014-03-11T19:00:42Z |
dc.date.created | 2013-12-13 |
dc.date.issued | 2013-12-13 |
dc.identifier.citation | Amiridis, V. [et al.]. Optimizing CALIPSO saharan dust retrievals. "Atmospheric chemistry and physics", 13 Desembre 2013, vol. 13, núm. 23, p. 12089-12106. |
dc.identifier.issn | 1680-7316 |
dc.identifier.uri | http://hdl.handle.net/2117/21999 |
dc.description.abstract | We demonstrate improvements in CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) dust extinction retrievals over northern Africa and Europe when corrections are applied regarding the Saharan dust lidar ratio assumption, the separation of the dust portion in detected dust mixtures, and the averaging scheme introduced in the Level 3 CALIPSO product. First, a universal, spatially constant lidar ratio of 58 sr instead of 40 sr is applied to individual Level 2 dust-related backscatter products. The resulting aerosol optical depths show an improvement compared with synchronous and collocated AERONET (Aerosol Robotic Network) measurements. An absolute bias of the order of -0.03 has been found, improving on the statistically significant biases of the order of -0.10 reported in the literature for the original CALIPSO product. When compared with the MODIS (Moderate-Resolution Imaging Spectroradiometer) collocated aerosol optical depth (AOD) product, the CALIPSO negative bias is even less for the lidar ratio of 58 sr. After introducing the new lidar ratio for the domain studied, we examine potential improvements to the climatological CALIPSO Level 3 extinction product: (1) by introducing a new methodology for the calculation of pure dust extinction from dust mixtures and (2) by applying an averaging scheme that includes zero extinction values for the nondust aerosol types detected. The scheme is applied at a horizontal spatial resolution of 1 × 1 for ease of comparison with the instantaneous and collocated dust extinction profiles simulated by the BSC-DREAM8b dust model. Comparisons show that the extinction profiles retrieved with the proposed methodology reproduce the well-known model biases per subregion examined. The very good agreement of the proposed CALIPSO extinction product with respect to AERONET, MODIS and the BSC-DREAM8b dust model makes this dataset an ideal candidate for the provision of an accurate and robust multiyear dust climatology over northern Africa and Europe |
dc.format.extent | 18 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
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 | Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental |
dc.subject.lcsh | Radar meteorology |
dc.subject.lcsh | Air quality -- Measurement |
dc.subject.lcsh | Mineral dust |
dc.subject.lcsh | Artificial satellites in remote sensing |
dc.subject.lcsh | Infrared radiation |
dc.subject.lcsh | Atmospheric aerosols |
dc.subject.other | GEOBASE Subject Index: aerosol |
dc.subject.other | CALIPSO |
dc.subject.other | detection method |
dc.subject.other | dust |
dc.subject.other | lidar |
dc.subject.other | MODIS |
dc.subject.other | optical depth |
dc.subject.other | optimization |
dc.subject.other | spatial variation Regional Index: Africa |
dc.subject.other | Europe |
dc.subject.other | Sahara |
dc.title | Optimizing CALIPSO saharan dust retrievals |
dc.type | Article |
dc.subject.lemac | Radarmeteorologia |
dc.subject.lemac | Aire -- Qualitat -- Mesurament |
dc.subject.lemac | Pols mineral |
dc.subject.lemac | Satèl·lits artificials en teledetecció |
dc.subject.lemac | Raigs infraroigs |
dc.subject.lemac | Aerosols atmosfèrics |
dc.contributor.group | Universitat Politècnica de Catalunya. MTA - Modelització i Tecnologia Ambiental |
dc.identifier.doi | 10.5194/acp-13-12089-2013 |
dc.rights.access | Open Access |
local.identifier.drac | 13021443 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/316210/EU/Building Capacity for a Centre of Excellence for EO-based monitoring of Natural Disasters/BEYOND |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/262254/EU/Aerosols, Clouds, and Trace gases Research Infrastructure Network/ACTRIS |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/247492/EU/Aerosol and Cloud Influence on global surface UV irradiance retrieved from satellite sensors/ACI-UV |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/300515/EU/Global mapping of aerosol properties using neural network inversions of ground and satellite based data/AEROMAP |
local.citation.author | Amiridis, V.; Wandinger, U.; Marinou, E.; Giannakaki, E.; Tsekeri, A.; Basart, S.; Kazadzis, S.; Gkikas, A.; Taylor, M.; Baldasano, J.; Ansmann, A. |
local.citation.publicationName | Atmospheric chemistry and physics |
local.citation.volume | 13 |
local.citation.number | 23 |
local.citation.startingPage | 12089 |
local.citation.endingPage | 12106 |
Fitxers d'aquest items
Aquest ítem apareix a les col·leccions següents
-
Articles de revista [159]
-
Articles de revista [82]