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Measurement and modelling of dew in island, coastal and alpine areas

hal.structure.identifierPhysique et mécanique des milieux hétérogenes (UMR 7636) [PMMH]
hal.structure.identifierService des Basses Températures [SBT ]
hal.structure.identifierESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
dc.contributor.authorBEYSENS, Daniel
hal.structure.identifierSciences pour l'environnement [SPE]
dc.contributor.authorMUSELLI, Marc
hal.structure.identifierService de physique de l'état condensé [SPEC - UMR3680]
hal.structure.identifierService des Basses Températures [SBT ]
hal.structure.identifierESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
dc.contributor.authorNIKOLAYEV, Vadim
hal.structure.identifierService des Basses Températures [SBT ]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
dc.contributor.authorNARHE, R.
hal.structure.identifierESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
dc.contributor.authorMILIMOUK, Irina
dc.date.issued2005
dc.identifier.issn0169-8095
dc.description.abstractEnWe compare the characteristics of dew at nearly the same latitude (42 – 45jN) for the Mediterranean island of Corsica (Ajaccio, France) and two continental locations (Bordeaux, France, Atlantic coastal area; Grenoble, France, alpine valley). Dew amount was measured on a horizontal reference plate made of polymethylmethacrylate (PMMA) and placed at 1 m above the ground. Data are correlated with plate and air temperature, air relative humidity, wind speed and cloud cover during the period from 14-08-1999 to 15-01-2003. General features as well as particularities of the sampling sites are discussed. The average daily dew yield is higher for the island station at Ajaccio (0.070 mm) than the Bordeaux coastal area (0.046 mm) or the Grenoble valley (0.036 mm). However, the accumulated dew yield was highest for the coastal station (9.8 mm/year) as compared to the island (8.4 mm/year), and much larger than in the alpine valley (4 mm/year). The difference between cumulated and average dew yield stems from the greater number of dew days in the coastal area (58%) versus 33% for the island and 30% in the valley. The higher wind speeds at the island station (average wind during dew is 2 m/s) and lower relative humidity explain the smaller number of dew days. The dew rate seasonal variation is negligible in Bordeaux and exhibits during summer a maximum in Ajaccio and a minimum in Grenoble. A computer model that includes simple meteorological data (air temperature and relative humidity, wind speed, cloud cover) is used to determine the thermal balance and fit to dew mass evolution. Two parameters that account for heat and mass exchange can be adjusted. It was found that, within the uncertainties, these two numbers are the same for the two continental sites, thus allowing dew formation on plates to be evaluated from only simple meteorological measurements. Somewhat larger values are found for the island, due to limitations in the model, which are discussed.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.enAtmospheric deposition and condensation on Plexiglas
dc.subject.enDew yield
dc.subject.enDew modelling
dc.subject.enPlexiglas passive water collectors
dc.title.enMeasurement and modelling of dew in island, coastal and alpine areas
dc.typeArticle de revue
dc.identifier.doi10.1016/j.atmosres.2004.05.003
dc.subject.halSciences de l'environnement/Ingénierie de l'environnement
bordeaux.journalAtmospheric Research
bordeaux.page1-22
bordeaux.volume73
bordeaux.issue1-2
bordeaux.peerReviewedoui
hal.identifierhal-01261686
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01261686v1
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