Study of seasonal-scale atmospheric water cycle with ground-based GPS receivers, radiosondes and NWP models over Morocco

Show simple item record

dc.contributor.author Koulali, Achraf
dc.contributor.author Ouazar, Driss
dc.contributor.author Bock, Olivier
dc.contributor.author Fadil, Abdelali
dc.date.accessioned 2013-08-09T16:05:16Z
dc.date.available 2013-08-09T16:05:16Z
dc.date.copyright 2011
dc.date.issued 2011
dc.identifier.citation Koulali, A., Ouazar, D., Bock, O., & Fadil, A. (2012). Study of seasonal-scale atmospheric water cycle with ground-based GPS receivers, radiosondes and NWP models over Morocco. Atmospheric Research, 104-105, 273-291.doi:10.1016/j.atmosres.2011.11.002 en
dc.identifier.issn 0169-8095
dc.identifier.uri http://hdl.handle.net/10625/51494
dc.description.abstract This study investigates the seasonal variation of precipitable water vapor, moisture transport and precipitation over Morocco and the Canary Islands using data from ground-based GPS receivers, radiosondes, GPCP and NCEP reanalysis II. In a first part, the datasets are inter-compared. Humidity biases are evidenced in both radiosonde observations (dry) and NCEP reanalysis (dry and wet) compared to GPS. Moisture transport and precipitation from the reanalysis and observations show a good agreement. Precipitable water shows a maximum in late summer whereas precipitation is peaking in winter and spring over Morocco. Moisture transport occurs preferentially in two layers, below and above 850 hPa. The monthly mean precipitable water variation over Morocco is controlled by the upper layer zonal and meridional moisture flux. Precipitation is rather controlled by the lower layer moisture flux and the upper layer meridional flux. The GPS tropospheric gradients show also a consistent seasonal evolution, which is explained by gradients both in the thickness of the troposphere and in the precipitable water vapor. Tropospheric gradients are correlated with moisture fluxes, mostly in the upper layer, and may therefore provide valuable information for meteorology and climatology. en
dc.format Text en
dc.format.extent 1 digital file (p. 273-291) en
dc.format.mimetype Application/pdf
dc.language.iso en
dc.publisher Elsevier en
dc.subject PRECIPITABLE WATER VAPOR en
dc.subject GLOBAL POSITIONING SYSTEM en
dc.subject ZENITH TOTAL DELAY en
dc.subject RADIOSONDES en
dc.subject NCEP en
dc.subject MOROCCO en
dc.subject SEASONAL VARIATIONS en
dc.subject PRECIPITATION en
dc.title Study of seasonal-scale atmospheric water cycle with ground-based GPS receivers, radiosondes and NWP models over Morocco en
dc.type Journal Article (peer-reviewed) en
idrc.project.number 106372
idrc.project.componentnumber 106372013
idrc.project.title International Research Initiative on Adaptation to Climate Change en
idrc.copyright.holder Elsevier B.V.
idrc.dspace.access IDRC Only en
idrc.rims.adhocgroup IDRC SUPPORTED en
idrc.recordsserver.bcsnumber IC01-3527-46
idrc.noaccess Due to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI. en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record