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DOI	10.1007/s00382-021-05797-7
	How well does MPAS-atmosphere simulate the characteristics of the Botswana High?
	Maoyi M.L.; Abiodun B.J.
发表日期	2021
ISSN	0930-7575
英文摘要	The Botswana High is a prominent mid-tropospheric system that modulates rainfall over subtropical southern Africa, but the capability of a global climate model (GCM) to reproduce it remains unknown. This study examines the capability of a GCM with quasi-uniform resolution (Model Prediction Across Scales, hereafter MPAS) in simulating the characteristics of the Botswana High. The MPAS is applied to simulate the global climate at 240 km quasi-uniform resolution over the globe for the period 1980–2010. The model results are validated against gridded observation dataset (Climate Research Unit, CRU), satellite dataset (Global Precipitation Climatology Project, GPCP), and reanalysis datasets (Climate Forecast System Reanalysis, CFSR; the National Oceanic and Atmospheric Administration, NOAA; and the European Centre for Medium-Range Weather Forecasts version 5, ERA5). In general, MPAS replicates all the essential features in the climatology of temperature, rainfall, 500 hPa geopotential height and vertical motion over southern Africa, reproduces the spatial and temporal variation of the Botswana High, and captures the influence of the Botswana High on droughts and deep convections over the sub-continent. In addition, the model reproduces well the anomalies in vertical motion over subtropical southern Africa during +ve and −ve phases of the Botswana High. However, the model struggles to reproduce the precipitation pattern associated with the positive and negative modes of the Botswana High. The results of this study have an application in understanding the characteristics of the Botswana High and in improving MPAS for seasonal forecasting over southern Africa. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Botswana High; Drought; ENSO; MPAS-atmosphere; Southern Africa; Variable-resolution models
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183430
作者单位	Climate System Analysis Group, Department of Environmental and Geographical Science, University of Cape Town, Cape Town, South Africa
推荐引用方式 GB/T 7714	Maoyi M.L.,Abiodun B.J.. How well does MPAS-atmosphere simulate the characteristics of the Botswana High?[J],2021.
APA	Maoyi M.L.,&Abiodun B.J..(2021).How well does MPAS-atmosphere simulate the characteristics of the Botswana High?.Climate Dynamics.
MLA	Maoyi M.L.,et al."How well does MPAS-atmosphere simulate the characteristics of the Botswana High?".Climate Dynamics (2021).