Aerosol Lidar observations and model calculations of the Planetary Boundary Layer evolution over Greece, during the March 2006 Total Solar Eclipse

Amiridis, V; Melas, D; Balis, DS; Papayannis, A; Founda, D; Katragkou, E; Giannakaki, E; Mamouri, RE; Gerasopoulos, E; Zerefos, C

dc.contributor.author	Amiridis, V	en
dc.contributor.author	Melas, D	en
dc.contributor.author	Balis, DS	en
dc.contributor.author	Papayannis, A	en
dc.contributor.author	Founda, D	en
dc.contributor.author	Katragkou, E	en
dc.contributor.author	Giannakaki, E	en
dc.contributor.author	Mamouri, RE	en
dc.contributor.author	Gerasopoulos, E	en
dc.contributor.author	Zerefos, C	en
dc.date.accessioned	2014-03-01T01:25:53Z
dc.date.available	2014-03-01T01:25:53Z
dc.date.issued	2007	en
dc.identifier.issn	1680-7316	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17788
dc.subject	Air Quality Model	en
dc.subject	Convective Heat Transfer	en
dc.subject	Planetary Boundary Layer	en
dc.subject	Vertical Mixing	en
dc.subject	Mixed Layer	en
dc.subject	Turn Off	en
dc.subject	Weather Research and Forecast	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.other	aerosol	en
dc.subject.other	atmospheric modeling	en
dc.subject.other	boundary layer	en
dc.subject.other	evolution	en
dc.subject.other	lidar	en
dc.subject.other	mixing	en
dc.subject.other	observational method	en
dc.subject.other	planetary atmosphere	en
dc.subject.other	solar eclipse	en
dc.subject.other	weather forecasting	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.title	Aerosol Lidar observations and model calculations of the Planetary Boundary Layer evolution over Greece, during the March 2006 Total Solar Eclipse	en
heal.type	journalArticle	en
heal.identifier.primary	10.5194/acpd-7-13537-2007	en
heal.identifier.secondary	http://dx.doi.org/10.5194/acpd-7-13537-2007	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	An investigation of the Planetary Boundary Layer (PBL) height evolution over Greece, during the solar eclipse of 29 March 2006, is presented. Ground based observations were carried out using lidar detection and ranging devices and ground meteorological instruments, to estimate the height of the mixing layer (ML) before, during and after the solar eclipse in northern and southern parts of Greece exhibiting different sun obscuration. Data demonstrate that the solar eclipse has induced a decrease of the PBL height, indicating a suppression of turbulence activity similar to that during the sunset hours. The changes in PBL height were associated with a very shallow entrainment zone, indicating a significant weakening of the penetrative convection. Heat transfer was confined to a thinner layer above the ground. The thickness of the entrainment zone exhibited its minimum during the maximum of the eclipse, demonstrative of turbulence mechanisms suppression at that time. Model estimations of the PBL evolution were additionally conducted using the Comprehensive Air Quality Model with extensions (CAMx) coupled with the Weather Research and Forecasting model (WRF). Model-diagnosed PBL height decrease during the solar eclipse due to vertical transport decay, in agreement with the experimental findings; vertical profiles of atmospheric particles and gaseous species showed an important vertical mixing attenuation.	en
heal.publisher	COPERNICUS PUBLICATIONS	en
heal.journalName	Atmospheric Chemistry and Physics	en
dc.identifier.doi	10.5194/acpd-7-13537-2007	en
dc.identifier.isi	ISI:000252166500008	en
dc.identifier.volume	7	en
dc.identifier.issue	24	en
dc.identifier.spage	6181	en
dc.identifier.epage	6189	en