Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5014 |
Climate change and precipitation variability over the western 'Pampas' in Argentina | |
Maenza, Reinaldo A.1,2,3; Agosta, Eduardo A.2,3,4; Bettolli, Maria L.1,3 | |
2017-08-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37 |
文章类型 | Article |
语种 | 英语 |
国家 | Argentina |
英文摘要 | This work focuses on the analysis of spatial and temporal variability of precipitation in the central region of southern Central Argentina (SCA), a climate transition area which has experienced an important agricultural expansion. For this purpose, gauge station precipitation datasets available in the area were extensively used. The annual cycle shows a defined dry season (May-August) and wet season (September-April). Wet season represents over 85% of annual totals. A regionalization analysis of wet-season precipitation suggests five subregions with spatially homogeneous precipitation variability in SCA. Three out the five subregions are located in central SCA. Conveniently devised precipitation indices for the latter subregions show the presence of significant precipitation jumps by the early 1970s, and to a minor extent, the mid-1960s. Precipitation jumps are responsible for the observed long-term trends in central SCA, which explain positive precipitation changes over 30-40% of regional averages in the period 1922-2012. The presence of stationary and non-stationary components in SCA precipitation variability remotely connects the region mainly with variations in equatorial Pacific SSTs. The assessment of greenhouse gases concentration effects on future projections of wet-season precipitation over central SCA is investigated by means of multi-model analysis of historical experiment, and the representative concentration pathways 4.5 (RCP 4.5) and 8.5 (RCP 8.5), provided by the Coupled Model Intercomparison Project Phase 5. Results suggest an overall increased precipitation, roughly 15% respect to present climate, under most severe future scenario. |
英文关键词 | precipitation change climate variability the Pampas region global warming CMIP5 1976-1977 climate shift |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417298600031 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; SOUTH-AMERICAN RAINFALL ; SUMMER PRECIPITATION ; ATLANTIC ; TRENDS ; OSCILLATION ; CMIP5 ; ENSO ; ROTATION ; OCEAN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37314 |
专题 | 气候变化 |
作者单位 | 1.Univ Buenos Aires, Dept Ciencias Atmosfera & Oceanos, Buenos Aires, DF, Argentina; 2.Pontificia Univ Catolica Argentina UCA, Equipo Interdisciplinario Estudio Proc Atmosfer C, Fac Ingn & Ciencias Agr, Buenos Aires, DF, Argentina; 3.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina; 4.UNLP, FCAG, La Plata, Buenos Aires, Argentina |
推荐引用方式 GB/T 7714 | Maenza, Reinaldo A.,Agosta, Eduardo A.,Bettolli, Maria L.. Climate change and precipitation variability over the western 'Pampas' in Argentina[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37. |
APA | Maenza, Reinaldo A.,Agosta, Eduardo A.,&Bettolli, Maria L..(2017).Climate change and precipitation variability over the western 'Pampas' in Argentina.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37. |
MLA | Maenza, Reinaldo A.,et al."Climate change and precipitation variability over the western 'Pampas' in Argentina".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37(2017). |
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