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Optimal Physics Parameterization Scheme Combination of the Weather Research and Forecasting Model for Seasonal Precipitation Simulation over Ghana
Joint Authors
Agyekum, Jacob
Annor, Thompson
Lamptey, Benjamin
Quansah, Emmannuel
Agyeman, Richard Yao Kuma
Tieku, Sampson Adu
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-06
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Seasonal predictions of precipitation, among others, are important to help mitigate the effects of drought and floods on agriculture, hydropower generation, disasters, and many more.
This work seeks to obtain a suitable combination of physics schemes of the Weather Research and Forecasting (WRF) model for seasonal precipitation simulation over Ghana.
Using the ERA-Interim reanalysis as forcing data, simulation experiments spanning eight months (from April to November) were performed for two different years: a dry year (2001) and a wet year (2008).
A double nested approach was used with the outer domain at 50 km resolution covering West Africa and the inner domain covering Ghana at 10 km resolution.
The results suggest that the WRF model generally overestimated the observed precipitation by a mean value between 3% and 64% for both years.
Most of the scheme combinations overestimated (underestimated) precipitation over coastal (northern) zones of Ghana for both years but estimated precipitation reasonably well over forest and transitional zones.
On the whole, the combination of WRF Single-Moment 6-Class Microphysics Scheme, Grell-Devenyi Ensemble Cumulus Scheme, and Asymmetric Convective Model Planetary Boundary Layer Scheme simulated the best temporal pattern and temporal variability with the least relative bias for both years and therefore is recommended for Ghana.
American Psychological Association (APA)
Agyeman, Richard Yao Kuma& Annor, Thompson& Lamptey, Benjamin& Quansah, Emmannuel& Agyekum, Jacob& Tieku, Sampson Adu. 2017. Optimal Physics Parameterization Scheme Combination of the Weather Research and Forecasting Model for Seasonal Precipitation Simulation over Ghana. Advances in Meteorology،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1122898
Modern Language Association (MLA)
Agyeman, Richard Yao Kuma…[et al.]. Optimal Physics Parameterization Scheme Combination of the Weather Research and Forecasting Model for Seasonal Precipitation Simulation over Ghana. Advances in Meteorology No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1122898
American Medical Association (AMA)
Agyeman, Richard Yao Kuma& Annor, Thompson& Lamptey, Benjamin& Quansah, Emmannuel& Agyekum, Jacob& Tieku, Sampson Adu. Optimal Physics Parameterization Scheme Combination of the Weather Research and Forecasting Model for Seasonal Precipitation Simulation over Ghana. Advances in Meteorology. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1122898
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122898