| DOI: | 10.1175/JCLI-D-12-00239.1
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| Scopus记录号: | 2-s2.0-84874803356
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| 论文题名: | The role of mesoscale convective complexes in southern Africa summer rainfall |
| 作者: | Blamey R.C.; Reason C.J.C.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2013
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| 卷: | 26, 期:5 | | 起始页码: | 1654
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| 结束页码: | 1668
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| 语种: | 英语
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| Scopus关键词: | Africa
; Botswana
; Eastern regions
; Indian ocean
; Interannual variability
; Meso-scale systems
; Mesoscale convective complexes
; Mozambique
; Namibia
; Rainfall variability
; Satellite observations
; Sea surface temperature (SST)
; South Africa
; Spatial and temporal variability
; Summer rainfall
; Tropical rainfall measuring missions
; Warm season rainfall
; Atmospheric temperature
; Lasers
; Precipitation (chemical)
; Rain gages
; Rain
; annual variation
; convective system
; mesoscale meteorology
; precipitation (climatology)
; precipitation intensity
; rainfall
; satellite imagery
; spatial variation
; summer
; temporal variation
; TRMM
; Botswana
; Indian Ocean
; Indian Ocean (Southwest)
; Mozambique
; Namibia
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| 英文摘要: | A combination of numerous factors, including geographic position, regional orography, and local sea surface temperatures, means that subtropical southern Africa experiences considerable spatial and temporal variability in rainfall and is prone to both frequent flooding and drought events. One system that may contribute to rainfall variability in the region is the mesoscale convective complex (MCC). In this study, Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) data is used to document the precipitation produced by MCCs over southern Africa for the 1998-2006 period. Most of the rainfall associated with MCCs is found to occur over central Mozambique, extending southward to eastern South Africa. High precipitation totals associated with these systems also occur over the neighboring southwest Indian Ocean, particularly off the northeast coast of South Africa. MCCs are found to contribute up to 20% of the total summer rainfall (November-March) in parts of the eastern region of southern Africa. If the month of March is excluded from the analysis, then the contribution increases up to 24%. In general, the MCC summer rainfall contribution for most of the eastern region is approximately between 8% and 16%. Over the western interior and Botswana and Namibia, the MCC contribution is much less (<6%). It is also evident that there is considerable interannual variability associated with the contribution that these systems make to the total warm season rainfall. © 2013 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/51990
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Oceanography, Marine Research Institute, University of Cape Town, Rondebosch, South Africa
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| Recommended Citation: | |
Blamey R.C.,Reason C.J.C.. The role of mesoscale convective complexes in southern Africa summer rainfall[J]. Journal of Climate,2013-01-01,26(5)
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