CCPortal
DOI10.1016/j.atmosres.2019.104705
Historical evaluations and simulations of precipitation over East Africa from Rossby centre regional climate model
Ayugi B.; Tan G.; Gnitou G.T.; Ojara M.; Ongoma V.
Date Issued2020
ISSN0169-8095
Volume232
Other AbstractThis study assesses the performance of ten Regional Climate Model (RCMs) from the latest version of Rossby Centre of Atmospheric models (RCA4) in the simulation of precipitation over Greater Horn of Africa (GHA) from 1951–2005. The evaluation was performed against observed data from the Climatic Research Unit (CRU) and Global Precipitation Climatology Centre (GPCC). Results for mean seasonal analyses demonstrate an underestimation of March–May (MAM) and June–September (JJAS) precipitation whilst October to December (OND) precipitation is overestimated. Further assessment on the annual scale depicts underestimation of rainfall. However, the west to east gradient representing heavier to lighter precipitation and bimodal patterns of the north to south rainfall band is well captured by most models. The models fairly reproduce precipitation variability over the southeast region as compared to the northwest parts of the study domain. The mean ensemble invariably outperforms the individual RCA4 models due to its minimal probability deviance in precipitation in each zone and throughout the GHA region. The overall evaluation shows weak correspondence of the model data with observed CRU based on statistical metrics. The top five performing models are: MIROC5, CSIRO, CM5A-MR, MPI-ESM-LR, and EC-EARTH. Large variations of model performance are noted from one model to model, and from one region to the other. The ensemble mean of the outperforming RCMs reproduces the rainfall climatology over study domain with reasonable skill and the findings of this study will be a base for the study of extreme floods/droughts events in the region. © 2019 The Authors
enkeywordsCORDEX; Greater Horn of Africa; Precipitation; Regional climate models; Rossby centre atmospheric models
Subject AreaClimatology; Precipitation (chemical); Rain; Atmospheric model; CORDEX; Global precipitation; Greater Horn of Africa; Precipitation variability; Rainfall climatologies; Regional climate modeling; Regional climate models; Climate models; climate modeling; ensemble forecasting; extreme event; historical perspective; precipitation assessment; regional climate; Rossby wave; seasonal variation; Horn of Africa
Language英语
scopus keywordsClimatology; Precipitation (chemical); Rain; Atmospheric model; CORDEX; Global precipitation; Greater Horn of Africa; Precipitation variability; Rainfall climatologies; Regional climate modeling; Regional climate models; Climate models; climate modeling; ensemble forecasting; extreme event; historical perspective; precipitation assessment; regional climate; Rossby wave; seasonal variation; Horn of Africa
journalAtmospheric Research
Document Type期刊论文
Identifierhttp://gcip.llas.ac.cn/handle/2XKMVOVA/120579
AffiliationKey Laboratory of Meteorological Disaster, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Ministry of Education, Nanjing, University of Information Science and Technology, Nanjing, 210044, China; College of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China; School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China; Uganda National Meteorological Authority, Clement Hill Road, P.O. Box 7025, Kampala, Uganda; School of Geography, Earth Science and Environment, The University of the South Pacific, Laucala Campus Private Bag, Suva, Fiji
Recommended Citation
GB/T 7714
Ayugi B.,Tan G.,Gnitou G.T.,et al. Historical evaluations and simulations of precipitation over East Africa from Rossby centre regional climate model[J],2020,232.
APA Ayugi B.,Tan G.,Gnitou G.T.,Ojara M.,&Ongoma V..(2020).Historical evaluations and simulations of precipitation over East Africa from Rossby centre regional climate model.Atmospheric Research,232.
MLA Ayugi B.,et al."Historical evaluations and simulations of precipitation over East Africa from Rossby centre regional climate model".Atmospheric Research 232(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ayugi B.]'s Articles
[Tan G.]'s Articles
[Gnitou G.T.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ayugi B.]'s Articles
[Tan G.]'s Articles
[Gnitou G.T.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ayugi B.]'s Articles
[Tan G.]'s Articles
[Gnitou G.T.]'s Articles
Terms of Use
No data!
Social Bookmark/Share

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.