DOI: 10.1007/s10584-014-1097-0
Scopus记录号: 2-s2.0-85027938992
论文题名: Seasonal and intraseasonal changes of African monsoon climates in 21st century CORDEX projections
作者: Mariotti L. ; Diallo I. ; Coppola E. ; Giorgi F.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2014
卷: 125, 期: 1 起始页码: 53
结束页码: 65
语种: 英语
Scopus关键词: aerosol
; atmospheric modeling
; dry season
; easterly wave
; greenhouse gas
; intertropical convergence zone
; monsoon
; precipitation (climatology)
; regional climate
; twenty first century
; Sahel [Sub-Saharan Africa]
; West Africa
英文摘要: We analyze a mini ensemble of regional climate projections over the CORDEX Africa domain carried out with RegCM4 model as part of the Phase I CREMA experiment (Giorgi 2013). RegCM4 is driven by the HadGEM2-ES and MPI-ESM global models for the RCP8.5 and RCP4.5 greenhouse gas and aerosol concentration scenarios. The focus of the analysis is on seasonal and intraseasonal monsoon characteristics. We find two prominent change signals. Over West Africa and the Sahel MPI produces a forward shift in the monsoon season in line with previous findings, and this shift is also simulated by the RegCM4. Furthermore, the regional model produces a widespread decrease of monsoon precipitation (when driven by both MPI and HadGEM) associated with decreased easterly wave activity in the 6–9 days regime and with soil moisture-precipitation interactions. South of the equator we find an extension of the dry season with delayed onset and anticipated recession of the monsoon and a narrowing and strengthening of the ITCZ precipitation band. This signal is consistent in all global and regional model projections, although with different spatial detail. We plan to enlarge this mini-ensemble as a further contribution to the CORDEX project to better assess the robustness of the signals found in this paper. © 2014, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84735
Appears in Collections: 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
作者单位: Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; Laboratoire de Physique de l’Atmosphère et de l’Océan Siméon Fongang (LPAO-SF), Université Cheikh Anta Diop, Ecole Supérieure Polytechnique (UCAD-ESP), Dakar, Senegal
Recommended Citation:
Mariotti L.,Diallo I.,Coppola E.,et al. Seasonal and intraseasonal changes of African monsoon climates in 21st century CORDEX projections[J]. Climatic Change,2014-01-01,125(1)