Show simple item record

dc.contributor.advisorSchrage, Jon M.en_US
dc.contributor.authorRife, Adamen_US
dc.date.accessioned2012-12-14T20:46:27Z
dc.date.available2012-12-14T20:46:27Z
dc.date.issued2012-12-13en_US
dc.identifier.otherrife-submit5.pdf
dc.identifier.urihttp://hdl.handle.net/10504/35546
dc.description.abstractLike many regions, tropical West Africa often experiences a low-level jet stream after sunset. In general, such jets are believed to be produced as a response to the sudden decrease in turbulence in the boundary layer when daytime heating ceases. However, the nocturnal low-level jet (NLLJ) in West Africa exists in a complex environment in which (a) the boundary layer rarely gets especially stable at night, (b) the Coriolis force is extremely weak, and (c) the pressure gradient force has a particularly large diurnal cycle (due to the formation of a heat low to the north of the region). In this study, the nocturnal low-level jet is examined using radiosonde and ultra high frequency (UHF) wind profile data gathered during the African Monsoon Multidisciplinary Analysis (AMMA) field campaign in 2006. These data, as well as output from a Weather Research and Forecasting (WRF) simulation of the region, are used to quantify the forces at work at different levels of the atmosphere to explain the formation, maintenance, and dissipation of this feature of the monsoon circulation. It is shown that the NLLJ is formed due to a combination of a release of friction after sunset and advection of momentum.en_US
dc.language.isoen_USen_US
dc.publisherCreighton Universityen_US
dc.rightsCopyright is retained by the Author. A non-exclusive distribution right is granted to Creighton University and to ProQuest following the publishing model selected above.en_US
dc.titleThe Nocturnal Low-Level Jet in Tropical West Africa: Generation and Representation in Various Data Archivesen_US
dc.typeThesis
dc.rights.holderAdam Rifeen_US
dc.publisher.locationOmaha, Nebraskaen_US
dc.description.noteProQuest Traditional Publishing Optionen_US
dc.contributor.cuauthorRife, Adamen_US
dc.degree.levelMS (Master of Science)en_US
dc.degree.disciplineAtmospheric Sciences (graduate program)en_US
dc.degree.nameM.S. in Atmospheric Sciencesen_US
dc.degree.grantorGraduate Schoolen_US
dc.degree.committeeZehnder, Joseph A.en_US
dc.degree.committeeWagner, Timothy J.en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record