Spatiotemporal variation and multivariate controls of short-cycle drought-flood abrupt alteration: A case in the Qinling-Daba Mountains of China
文献类型：期刊论文
| 作者 | Song, Xiaoyan; Lei, Xiaoping; Ma, Rui; Hou, Jingzhi; Liu, Wenbin |
| 刊名 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
 |
| 出版日期 | 2023-06-06 |
| ISSN号 | 1097-0088 |
| 关键词 | multiple wavelet coherence Qinling-Daba Mountains R-SDFAI short-cycle drought-flood abrupt alteration wavelet transform coherence |
| DOI | 10.1002/joc.8115 |
| 产权排序 | 2 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | A comprehensive understanding of the patterns of drought and flood alternation in adjacent months is essential for enabling climate adaptation and mitigation strategies. However, there is a paucity of knowledge regarding short-cycle drought-flood abrupt alteration (s-DFAA) and its responses to multiple environmental factors at various timescales. This is because of the inadequate formula construction of the existing short-cycle drought-flood abrupt alteration index (SDFAI), such as the inability to introduce drought standards. To accurately capture the s-DFAA's characteristics in the Qinling-Daba Mountains (Qinba Mountains), we proposed a revised SDFAI (R-SDFAI), which incorporates the standardized precipitation index (SPI) and allows for the customization of drought standards. Next, we used wavelet transform coherence and multiple wavelet coherence to investigate the timescale relationships between s-DFAA events and their influence factors such as relative humidity, sunshine duration, temperature, evaporation, Arctic Oscillation (AO), Nino3.4 SSTA Index (Nino3.4), Total Sunspot Number Index (TSNI) and Pacific Decadal Oscillation Index (PDO). Our results showed that the R-SDFAI outperformed traditional SDFAI in capturing s-DFAA events and characterizing their severity. Furthermore, s-DFAA events identified by R-SDFAI at different levels (i.e., mild, moderate, severe, extreme and total) displayed insignificant downward trends. Spatially, there were more s-DFAA events in the east than the west. Wavelet analysis indicated that meteorological factors and teleconnections significantly impact s-DFAA events at large timescales, though their driving mechanisms differed substantially. Among meteorological factors, single relative humidity and its related combinations exhibited relatively high percent area of significant coherence (PASC, ranging from 17.47 to 29.46). Each teleconnection and its combinations are irreplaceable, with PASC values always increasing with the number of variables. The PASC ranges from 8.3 to 10.29 for one factor, 12.38 to 18.65 for two factors, 24.02 to 30.58 for three factors and 40.88 for four factors, respectively. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| WOS关键词 | MULTIPLE-WAVELET COHERENCE ; STREAMFLOW VARIABILITY ; ALTERNATION ; BASIN ; ENSO |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193762]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 作者单位 | 1.Northwest A&F University - China 2.Chinese Academy of Sciences 3.Institute of Geographic Sciences & Natural Resources Research, CAS |
| 推荐引用方式 GB/T 7714 | Song, Xiaoyan,Lei, Xiaoping,Ma, Rui,et al. Spatiotemporal variation and multivariate controls of short-cycle drought-flood abrupt alteration: A case in the Qinling-Daba Mountains of China[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2023. |
| APA | Song, Xiaoyan,Lei, Xiaoping,Ma, Rui,Hou, Jingzhi,&Liu, Wenbin.(2023).Spatiotemporal variation and multivariate controls of short-cycle drought-flood abrupt alteration: A case in the Qinling-Daba Mountains of China.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
| MLA | Song, Xiaoyan,et al."Spatiotemporal variation and multivariate controls of short-cycle drought-flood abrupt alteration: A case in the Qinling-Daba Mountains of China".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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