{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T05:41:13Z","timestamp":1772257273474,"version":"3.50.1"},"posted":{"date-parts":[[2018,5,2]]},"group-title":"Aerosols\/Remote Sensing\/Troposphere\/Physics (physical properties and processes)","reference-count":0,"publisher":"Copernicus GmbH","license":[{"start":{"date-parts":[[2018,5,2]],"date-time":"2018-05-02T00:00:00Z","timestamp":1525219200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Abstract. An unprecedented extreme Saharan dust event was registered in winter time from 20 to 23 February 2017 over the Iberian Peninsula (IP). We report on aerosol optical properties observed under this extreme dust outbreak through remote sensing (active and passive) techniques. For that, EARLINET (European Aerosol Research LIdar NETwork) lidar and AERONET (AErosol RObotic NETwork) Sun-photometer Cimel CE 318 measurements are used. The sites considered are: Barcelona (41.38\u00ba\u2009N, 2.17\u00ba\u2009E), Burjassot (39.51\u00ba\u2009N, 0.42\u00ba\u2009W), Cabo da Roca (38.78\u00ba\u2009N, 9.50\u00ba\u2009W), \u00c9vora (38.57\u00ba\u2009N, 7.91\u00ba\u2009W), Granada (37.16\u00ba\u2009N, 3.61\u00ba\u2009W) and Madrid (40.45\u00ba\u2009N, 3.72\u00ba\u2009W).  In general, large aerosol optical depths (AOD) and low \u00c5ngstr\u00f6m exponents (AE) are observed. An AOD of 2.0 at 675\u2009nm is reached in several stations. Maximum values of AOD675 of 2.5 are registered in \u00c9vora. During and around the peak of AOD675, AEs close to 0 are measured. With regard to vertically-resolved aerosol optical properties, particle backscatter coefficients as high as 1.5\u221910\u22125\u2009m\u22121\u2009sr\u22121 at 355\u2009nm are recorded at every lidar stations. Mean lidar ratios are found in the range 40\u201355\u2009sr at 355\u2009nm and 34\u201361\u2009sr at 532\u2009nm during the event inside the dust layer. Mean particle and volume depolarization ratios are found to be very consistent between lidar stations. They range 0.19\u20130.31 and 0.12\u20130.26 respectively. The optical properties are also found very stable with height in the dust layer. Another remarkable aspect of the event is the limited height of the dust transport which is found between the ground and 5\u2009km. Our vertically-resolved aerosol properties are also used to estimate the performances of two dust models, namely BSC-DREAM8b and NMMB\/BSC-Dust, in order to evaluate their forecast skills in such intense dust outbreaks. We found that forecasts provided by the NMMB\/BSC-Dust show a better agreement with observations than the ones from BSC-DREAM8b. The BSC-DREAM8b forecasts (24\u2009h) present a large underestimation during the event. No clear degradation of the prognostics is appreciated in 24, 48, 72\u2009h except for the Barcelona station.<\/jats:p>","DOI":"10.5194\/acp-2018-370","type":"posted-content","created":{"date-parts":[[2018,5,2]],"date-time":"2018-05-02T04:58:19Z","timestamp":1525237099000},"source":"Crossref","is-referenced-by-count":4,"title":["February 2017 extreme Saharan dust outbreak in the Iberian \nPeninsula: from lidar-derived optical properties to evaluation \nof forecast models"],"prefix":"10.5194","author":[{"given":"Alfonso J.","family":"Fern\u00e1ndez","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8287-9693","authenticated-orcid":false,"given":"Micha\u00ebl","family":"Sicard","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2981-2232","authenticated-orcid":false,"given":"Maria J.","family":"Costa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8317-2304","authenticated-orcid":false,"given":"Juan L.","family":"Guerrero-Rascado","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9 L.","family":"G\u00f3mez-Amo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5075-0801","authenticated-orcid":false,"given":"Francisco","family":"Molero","sequence":"additional","affiliation":[]},{"given":"Rub\u00e9n","family":"Barrag\u00e1n","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2334-4055","authenticated-orcid":false,"given":"Daniele","family":"Bortoli","sequence":"additional","affiliation":[]},{"given":"Andr\u00e9s E.","family":"Bedoya-Vel\u00e1squez","sequence":"additional","affiliation":[]},{"given":"Mar\u00eda P.","family":"Utrillas","sequence":"additional","affiliation":[]},{"given":"Pedro","family":"Salvador","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8718-5914","authenticated-orcid":false,"given":"Mar\u00eda J.","family":"Granados-Mu\u00f1oz","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8912-5277","authenticated-orcid":false,"given":"Miguel","family":"Potes","sequence":"additional","affiliation":[]},{"given":"Pablo","family":"Ortiz-Amezcua","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9 A.","family":"Mart\u00ednez-Lozano","sequence":"additional","affiliation":[]},{"given":"Bego\u00f1a","family":"Art\u00ed\u00f1ano","sequence":"additional","affiliation":[]},{"given":"Constantino","family":"Mu\u00f1oz-Porcar","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1311-6291","authenticated-orcid":false,"given":"Rui","family":"Salgado","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4889-1781","authenticated-orcid":false,"given":"Roberto","family":"Rom\u00e1n","sequence":"additional","affiliation":[]},{"given":"Francesc","family":"Rocadenbosch","sequence":"additional","affiliation":[]},{"given":"Vanda","family":"Salgueiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5589-7263","authenticated-orcid":false,"given":"Jos\u00e9 A.","family":"Benavent-Oltra","sequence":"additional","affiliation":[]},{"given":"Alejandro","family":"Rodr\u00edguez-G\u00f3mez","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3576-7167","authenticated-orcid":false,"given":"Lucas","family":"Alados-Arboledas","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6886-3679","authenticated-orcid":false,"given":"Adolfo","family":"Comer\u00f3n","sequence":"additional","affiliation":[]},{"given":"Manuel","family":"Pujadas","sequence":"additional","affiliation":[]}],"member":"3145","container-title":[],"original-title":[],"link":[{"URL":"https:\/\/www.atmos-chem-phys-discuss.net\/acp-2018-370\/acp-2018-370.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,15]],"date-time":"2020-09-15T10:55:08Z","timestamp":1600167308000},"score":1,"resource":{"primary":{"URL":"https:\/\/acp.copernicus.org\/preprints\/acp-2018-370\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,5,2]]},"references-count":0,"URL":"https:\/\/doi.org\/10.5194\/acp-2018-370","relation":{"has-comment":[{"id-type":"doi","id":"10.5194\/acp-2018-370-RC1","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/acp-2018-370-RC2","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/acp-2018-370-RC3","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/acp-2018-370-RC3","asserted-by":"object"},{"id-type":"doi","id":"10.5194\/acp-2018-370-RC2","asserted-by":"object"},{"id-type":"doi","id":"10.5194\/acp-2018-370-RC1","asserted-by":"object"}],"is-supplemented-by":[{"id-type":"doi","id":"10.5194\/acp-2018-370-supplement","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/acp-2018-370-supplement","asserted-by":"object"}]},"subject":[],"published":{"date-parts":[[2018,5,2]]},"subtype":"preprint"}}