Download or read book Nonlinear Structure and Evolution of African Easterly Waves written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Structure and Evolution of African Easterly Waves written by Nathan R. Hardin and published by . This book was released on 2008 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: African Easterly Wave, evolution, nonlinear structure, AEW.
Download or read book The Genesis and Evolution of African Easterly Waves written by Hyeok Joe Kwon and published by . This book was released on 1988 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of African Easterly Waves and Associated Convection Using a Non hydrostatic Limited area Model written by Susanne Bachner and published by . This book was released on 2002 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book African Easterly Waves written by Bryce Paul Tyner and published by . This book was released on 2011 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Generation of African Easterly Waves written by Jen-Shan Hsieh and published by . This book was released on 2005 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variability of African Easterly Waves written by Yuan-Ming Cheng and published by . This book was released on 2019 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Maintenance and Propagation of African Easterly Waves Across Northern Africa A Case Study and Analysis of the Environment written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on the formation and maintenance of an African Easterly Wave (AEW) that developed over Northern Africa in 2000. Specifically, the pre-development period of Hurricane Alberto that initially formed over the Ethiopian Highlands (EH) region is studied in conjunction with this AEW disturbance. Based on EUMETSAT infrared (IR) satellite imagery and ECMWF 0.5o observational model (EOM) analysis data, we identified four convective genesis periods (G-I, G-II, G-III, and G-IV) and three lysis periods (L-I, L-II, and L-III). Based on the EOM analysis of the pre-Alberto system, we found that moisture and vertical velocity played a major role in the generation and maintenance of the convective cycles associated with the pre-Alberto system as it traveled westward across Northern Africa. Initially, orographic effects induce vertical velocity and moisture, and as the Alberto system travels westward these parameters are governed more by environmental factors. The National Center for Atmospheric Research (NCAR) Regional Climate Model Version 3.0 (henceforth RegCM3) was used to run the control case and several sensitivity simulations. We found that the EH is important for focusing and organizing AEW features by producing a consistent stationary wave mode, generating lee side vorticity, and initially providing sufficient vertical moisture flux for convection. PBL effects over the EH cause the initial convection in response to diurnal diabetic heating. As this convection propagates downstream, it merges with the orographically generated MV on the lee of the EH and a MCC results. PBL effects and moisture availability are important for propagating and maintaining AEW disturbances as they travel to the west and supporting sufficient moisture by allowing for surface moisture fluxes to affect these systems and aid in convective development. The AEW is slightly modulated by orography downstream from the EH region. Both the EH region and the PBL effects are essential in th.
Download or read book On the Scale Interaction Between African Easterly Waves and Convention written by Ting-Hsin Bruce Kuo and published by . This book was released on 1998 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diagnostic Studies of African Easterly Waves During GATE written by Robert S. Ross and published by . This book was released on 1985 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Maintenance and Propagation of African Easterly Waves Across Northern Africa written by Katie Ellen Robertson and published by . This book was released on 2004 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: wave, MCC, AEW, African Easterly Waves, mesoscale convective complexes.
Download or read book The diurnal cycle and African easterly waves written by C M. Taylor and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Linear Analysis of African Easterly Waves Incorporating written by Joseph Boyd and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book African Easterly Waves and Their Relationship to Rainfall on a Daily Timescale written by Jeffrey D. Baum and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Multi scale Analysis of African Easterly Waves in 2000 written by Gareth J. Berry and published by . This book was released on 2004 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interaction Between the African Waves and the African Easterly Jet written by Jung-Chieh Hsieh and published by . This book was released on 2003 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: African waves are the major synoptic system over North Africa in the summer. Previous studies have reported that African waves could be distinguished into the two different waves (African easterly waves and Burpee waves) on either side of the African easterly jet. Burpee waves (BWs) have been studied by numerous researchers, therefore, they are well known in the literature. In contrast, African easterly waves (AEWs) are not understood very well, due to the lack of data gathered over the desert. Previous studies have reported that vertical structures of the AEW is shallow near the surface on the north side of the jet. However, they do not explain the shallow structure of AEWs. Thus, the first objective of this study was to explore the limited height of AEWs by analyzing NCEP reanalysis data. According to these results, the mid-level high over North Africa plays an important role in limiting the height of AEWs. In addition, vorticity budget and streamfunction budget analysis indicate the vortex stretching term is the major dynamic process for vertical development and limitation of AEWs at the low and mid levels. Previous studies have mentioned the African jet is also weakened by African waves, but they did not explain the real-time interaction between them. Therefore, the second objective of this study was to explore the interaction between the jet and the wave. The results of Fourier analysis indicate the relationship between the perturbation and the jet depends on the relative positions between them. Vorticity budget analysis also indicates that zonal vorticity advection is an important term for perturbation on the south side of the jet to develop rotation to increase the jet. In contrast, the planetary vorticity advection is the key dynamic process enabling AEWs to develop on the north side of the jet, causing it to weaken.
