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A Numerical Investigation of the Precipitation over Lake Victoria Basin Using a Coupled Atmosphere-Lake Limited-Area Model
Joint Authors
Liu, Bin
Sun, Xia
Semazzi, Fredrick H. M.
Xie, Lian
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-15
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
By using a coupled atmosphere-lake model, which consists of the Weather Research and Forecasting (WRF) model and the Princeton Ocean Model (POM), the present study generated realistic lake surface temperature (LST) over Lake Victoria and revealed the prime importance of LST on the precipitation pattern over the Lake Victoria Basin (LVB).
A suite of sensitivity experiments was conducted for the selection of an optimal combination of physics options including cumulus, microphysics, and planetary boundary layer schemes for simulating precipitation over the LVB.
The WRF-POM coupled system made a great performance on simulating the expected LST, which is featured with eastward temperature gradient as in the real bathymetry of the lake.
Under thorough examination of diagnostic analysis, a distinguished diurnal phenomenon has been unveiled.
The precipitation mainly occurs during the nocturnal peak between midnight and early in the morning, which is associated with the strong land breeze circulation, when the lake temperature is warmer than the adjacent land.
Further exploration of vertical velocity, surface divergence pattern, and maximum radar reflectivity confirms such conjecture.
The time-longitude analysis of maximum radar reflectivity over the entire lake also shows a noticeable pattern of dominating westward propagation.
American Psychological Association (APA)
Sun, Xia& Xie, Lian& Semazzi, Fredrick H. M.& Liu, Bin. 2014. A Numerical Investigation of the Precipitation over Lake Victoria Basin Using a Coupled Atmosphere-Lake Limited-Area Model. Advances in Meteorology،Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-1034224
Modern Language Association (MLA)
Sun, Xia…[et al.]. A Numerical Investigation of the Precipitation over Lake Victoria Basin Using a Coupled Atmosphere-Lake Limited-Area Model. Advances in Meteorology No. 2014 (2014), pp.1-15.
https://search.emarefa.net/detail/BIM-1034224
American Medical Association (AMA)
Sun, Xia& Xie, Lian& Semazzi, Fredrick H. M.& Liu, Bin. A Numerical Investigation of the Precipitation over Lake Victoria Basin Using a Coupled Atmosphere-Lake Limited-Area Model. Advances in Meteorology. 2014. Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-1034224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1034224