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| DOI | 10.1007/s00704-024-04909-7 |
| Spatial and temporal changes of aridity in Argentina and its relationship with some oceanic-atmospheric teleconnection patterns | |
| 发表日期 | 2024 |
| ISSN | 0177-798X |
| EISSN | 1434-4483 |
| 英文摘要 | This paper analyzes spatial and temporal changes of aridity in Argentina (1961-2022). The aridity degree, using Climatic Research Unit (CRU) monthly data, was defined through six climate types classified by De Martonne Aridity Index (DMI). Argentina presents a very arid, arid and semiarid region that extends from Puna to Patagonia, alongside two humid and very humid regions: one located in the Chaco-Pampas Plains and Mesopotamia, and another in the Patagonian Andes. Between these regions, there are subhumid areas with marked aridity variations. These structures persist over time, but advances or setbacks were observed in their bordering areas, with significant changes in the Andes (leading to more arid conditions) and the southwestern Pampas Plains (leading to more humid conditions) during the historical period. The contribution of temperature and precipitation changes to these DMI changes was quantified, indicating that precipitation modulated the DMI spatial changes, while temperature intensified or weakened the change magnitudes. The extension variations of the arid and semiarid regions in Argentina were related to three climate variability modes (El Nino - Southern Oscillation [ENSO], Pacific Decadal Oscillation [PDO] and South Atlantic Ocean Dipole [SAOD]). Significant correlations were found with PDO (r < 0) and SAOD (r > 0), which indicate that an increase in the area occupied by arid and semiarid climates are associated with PDO negative phase or SAOD positive phase. Moreover, when these phases occur simultaneously, the expansion of arid and semiarid regions is larger than under the action of an individual forcing. |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001175858900006 |
| 来源期刊 | THEORETICAL AND APPLIED CLIMATOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/298896 |
| 作者单位 | University of Buenos Aires; University of Buenos Aires; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); University of Buenos Aires |
| 推荐引用方式 GB/T 7714 | . Spatial and temporal changes of aridity in Argentina and its relationship with some oceanic-atmospheric teleconnection patterns[J],2024. |
| APA | (2024).Spatial and temporal changes of aridity in Argentina and its relationship with some oceanic-atmospheric teleconnection patterns.THEORETICAL AND APPLIED CLIMATOLOGY. |
| MLA | "Spatial and temporal changes of aridity in Argentina and its relationship with some oceanic-atmospheric teleconnection patterns".THEORETICAL AND APPLIED CLIMATOLOGY (2024). |
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