Synoptic disturbances found in precipitable water fields north of equatorial Africa /
20ON. The wave's associated cusp-like feature adverts
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1998.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 20ON. The wave's associated cusp-like feature adverts 850mb upward vertical motion is also found to be across the continent at approximately 12 m/sec near African coast imbedded within a mean zonal flow of amounts much greater than the climate mean state over analysis of specific humidity and the appropriate and most coherent 3 to 8 day filtered PW signal. and wind field composites at 850hPa, 500hPa and 250hPa approximately 17 m/sec. The wave then moved east composite analysis is accomplished with both actual confidence intervals for the composites at two days prior. deep tropical moisture northward, Descriptive statistical analysis established determined the location and season for the strongest displayed for each variable found to be statistically doppler shifted propagating Rossby Wave (k = 6, c = -5 during the five primary days of their life cycle and each latitude band). Case study analysis revealed a eastward across northern Africa during MAM 1988. fit well within the range of Rossby wave structure. for a use study analysis of seven prominent anomalous m/sec) at 500hPa and 250hPa that moved onto the west NCEP/NCAR reanalysis (2.50 resolution) provides data observed PW and analyzed specific humidity and possibly convection enhanced by the wave passage. potential vorticity, specific humidity, temperature, precipitable water (PWI anomalies estimated from TOVS Previous studies, accomplished by Mackey (1996), PW events during the period. Six case wind field resolutions within the localized grid (20OW to 40oE 00 resulting in Mackey's PW anomaly. Analysis of satellite observations are analyzed as they propagate showing a four stage development of the PW anomalies significant. The strongest correlation between slightly enhanced due to the anomalous flow associated standard deviation field supports this finding. PW structure, indicating an additional moisture source, temperature is observed at 500mb and 250mb. Composite the Gulf of Guinea are found within the PW anomaly The origin and structure of tropical synoptic scale aphics. to 30ON). A sample structure of the anomalies is winds and reduced shear winds (zonal mean removed at with the wave passage. An empirical model is provided |
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| Item Description: | "Major subject: Meteorology". Vita. |
| Physical Description: | xiii, 97 leaves : illustrations, maps ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references (leaves 94-96). |