Extraordinary dust event over Beijing, China, during April 2006: Lidar, Sun photometric, satellite observations and model validation

Papayannis, A; Zhang, HQ; Amiridis, V; Ju, HB; Chourdakis, G; Georgoussis, G; Perez, C; Chen, HB; Goloub, P; Mamouri, RE; Kazadzis, S; Paronis, D; Tsaknakis, G; Baldasano, JM

dc.contributor.author	Papayannis, A	en
dc.contributor.author	Zhang, HQ	en
dc.contributor.author	Amiridis, V	en
dc.contributor.author	Ju, HB	en
dc.contributor.author	Chourdakis, G	en
dc.contributor.author	Georgoussis, G	en
dc.contributor.author	Perez, C	en
dc.contributor.author	Chen, HB	en
dc.contributor.author	Goloub, P	en
dc.contributor.author	Mamouri, RE	en
dc.contributor.author	Kazadzis, S	en
dc.contributor.author	Paronis, D	en
dc.contributor.author	Tsaknakis, G	en
dc.contributor.author	Baldasano, JM	en
dc.date.accessioned	2014-03-01T01:26:21Z
dc.date.available	2014-03-01T01:26:21Z
dc.date.issued	2007	en
dc.identifier.issn	0094-8276	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18026
dc.subject	Model Validation	en
dc.subject	Satellite Observation	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Atmospheric aerosols	en
dc.subject.other	Dust	en
dc.subject.other	Forecasting	en
dc.subject.other	Mathematical models	en
dc.subject.other	Meteorological instruments	en
dc.subject.other	Optical radar	en
dc.subject.other	Photometry	en
dc.subject.other	Satellite observatories	en
dc.subject.other	Size distribution	en
dc.subject.other	Aerosol optical depth	en
dc.subject.other	Free-tropospheric aerosols	en
dc.subject.other	Meteorology	en
dc.subject.other	aerosol	en
dc.subject.other	albedo	en
dc.subject.other	dust	en
dc.subject.other	lidar	en
dc.subject.other	model validation	en
dc.subject.other	MODIS	en
dc.subject.other	optical depth	en
dc.subject.other	size distribution	en
dc.subject.other	vertical profile	en
dc.subject.other	Asia	en
dc.subject.other	Beijing [China]	en
dc.subject.other	China	en
dc.subject.other	Eurasia	en
dc.subject.other	Far East	en
dc.title	Extraordinary dust event over Beijing, China, during April 2006: Lidar, Sun photometric, satellite observations and model validation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1029/2006GL029125	en
heal.identifier.secondary	http://dx.doi.org/10.1029/2006GL029125	en
heal.identifier.secondary	L07806	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	An extraordinary dust event over Beijing (April 2006) was followed by a synergy of lidar, Sun photometric and satellite measurements. Extreme aerosol optical depth (AOD) values (1-4) were measured by AERONET and MODIS over Beijing. The size distribution of the particles remained close to 2.5 μm and the single scattering albedo was around 0.92 ± 0.5 (440 nm). Coarse particles contributed to more than 60-80% to the AOD values, indicating the presence of very large particles (Ångström exponent <0.3). Coarse particle contribution to total AOD is associated with the free-tropospheric aerosols calculated by lidar profiles (65%). Lidar vertical profiles with AOD values from AERONET were used to estimate a typical lidar ratio for the dust particles (84 sr) during the most intense dust period. The DREAM forecast model was applied for the accurate description of the dust event evolution. Ground-truth data were used for the validation of DREAM over the Beijing area. Copyright 2007 by the American Geophysical Union.	en
heal.publisher	AMER GEOPHYSICAL UNION	en
heal.journalName	Geophysical Research Letters	en
dc.identifier.doi	10.1029/2006GL029125	en
dc.identifier.isi	ISI:000245579000004	en
dc.identifier.volume	34	en
dc.identifier.issue	7	en