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DOI | 10.1002/joc.5937 |
Precipitation variability and its relation to climate anomalies in the Bolivian Altiplano | |
Canedo-Rosso, Claudia1,2; Uvo, Cintia B.1; Berndtsson, Ronny1,3 | |
2019-03-30 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:4页码:2096-2107 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Bolivia |
英文摘要 | Precipitation variability over the Bolivian Altiplano is strongly affected by local climate and temporal variation of large-scale atmospheric flow. Precipitation is the main water source for drinking water and agricultural production. For this reason, a better understanding of precipitation variability and its relation with climate phenomena can provide important information for forecasting of droughts and floods, disaster risk reduction, and improvement of water management. We present results of an analysis of the austral summer precipitation variability at six locations in the Bolivian Altiplano and connections to climate variability. For this purpose, the variability of the summer precipitation was related to El Nino-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), Antarctic Meridional Mode (AMM), and Atlantic Multidecadal Oscillation (AMO). A statistically significant correlation between climate indices and precipitation was found in various spectral frequencies and power. The variability of the summer precipitation was associated with the climate indices using a band-pass filter, representing the signal at a particular period of time. For the ENSO, band-pass filtering was applied for Nino3.4 and Nino3 at band similar to 2-7 years, for NAO band similar to 5-8 years, and for AMM band similar to 10-13 years. The variability of summer precipitation was related to all studied climate modes by negative relationships. The physical explanation for this is first the dry air transported from the Pacific Ocean to the Altiplano during El Nino events. Second, NAO and ENSO are dynamically linked through teleconnections. Third, the intertropical convergence zone (ITCZ) shifts are northwards during the warm phases of AMM. These physical mechanisms lead to a reduced austral summer precipitation associated with positive phases of the ENSO, NAO, and AMM. The results can be used to better forecast precipitation in the Bolivian Altiplano and provide support for the development of policies to improve climate resilience and risk management of water supply. |
英文关键词 | AMM AMO austral summer precipitation climate phenomena ENSO multivariate analysis NAO PDO wavelet analysis |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465456400019 |
WOS关键词 | NORTH-ATLANTIC OSCILLATION ; SOUTHERN-OSCILLATION ; PACIFIC ; PATTERNS ; RAINFALL ; ENSO ; CIRCULATION ; MECHANISMS ; AMERICA ; DECOMPOSITION |
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/181828 |
专题 | 气候变化 |
作者单位 | 1.Lund Univ, Dept Water Resources Engn, POB 118, SE-22100 Lund, Sweden; 2.Univ Mayor San Andres, Inst Hidraul & Hidrol, La Paz, Bolivia; 3.Lund Univ, Ctr Middle Eastern Studies, Lund, Sweden |
推荐引用方式 GB/T 7714 | Canedo-Rosso, Claudia,Uvo, Cintia B.,Berndtsson, Ronny. Precipitation variability and its relation to climate anomalies in the Bolivian Altiplano[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(4):2096-2107. |
APA | Canedo-Rosso, Claudia,Uvo, Cintia B.,&Berndtsson, Ronny.(2019).Precipitation variability and its relation to climate anomalies in the Bolivian Altiplano.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(4),2096-2107. |
MLA | Canedo-Rosso, Claudia,et al."Precipitation variability and its relation to climate anomalies in the Bolivian Altiplano".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.4(2019):2096-2107. |
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