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| DOI | 10.1007/s11600-024-01288-5 |
| Measuring the degree of rainfall alteration and eco-deficit/eco-surplus of rainfall using indicators of rainfall alteration approach | |
| Pal, Swades; Khatun, Rumki; Debanshi, Sandipta; Sarda, Rajesh | |
| 发表日期 | 2024 |
| ISSN | 1895-6572 |
| EISSN | 1895-7455 |
| 英文摘要 | The present study explored district-wise monthly rainfall of two climatic regimes (1960-1990 and 1991-2020) of the West Bengal state of India, which receives an annual rainfall of about 1500 mm with huge seasonal rainfall variability. A simple time series analysis does not show any noticeable trend. However, decomposing rainfall parameters into several indicators may explore the change. From this perspective, the present paper intends to explore the nature, degree, and direction of rainfall alteration. The range of variability approach (RVA) considered 29 indicators was adopted for unveiling it. RVA explored that in the 1991-2017 phase, the rainfall failure rate above the upper threshold (75th percentile) is 33% which is 10% greater than in 1961-1990. Seasonal variation in failure rate was detected, but overall larger area of the state recorded failure rate (FR) above the threshold. This result leads to increasing wetness conditions. Very low to moderate (< 0.4) degree of impact of rainfall alteration (DIRA) was found in the recent period. The areal occupation of moderate DIRA was considerable in pre-monsoon, post-monsoon, and winter seasons. Time series rainfall data-based flow duration curves (FDCs) indicated the dominance of the eco-surplus rainfall state over greater parts of the state (72-84%) in all the seasons except winter (49%). Such surplus rainfall may be beneficial to the ecological and agricultural perspective of the state. |
| 英文关键词 | Rainfall regime; Failure rate; Threshold rainfall; Degree of alteration; Indicators of rainfall alteration; Eco-deficit/eco-surplus rainfall |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:001158302800001 |
| 来源期刊 | ACTA GEOPHYSICA
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297813 |
| 作者单位 | University of Gour Banga; University of Delhi; Delhi School of Economics |
| 推荐引用方式 GB/T 7714 | Pal, Swades,Khatun, Rumki,Debanshi, Sandipta,et al. Measuring the degree of rainfall alteration and eco-deficit/eco-surplus of rainfall using indicators of rainfall alteration approach[J],2024. |
| APA | Pal, Swades,Khatun, Rumki,Debanshi, Sandipta,&Sarda, Rajesh.(2024).Measuring the degree of rainfall alteration and eco-deficit/eco-surplus of rainfall using indicators of rainfall alteration approach.ACTA GEOPHYSICA. |
| MLA | Pal, Swades,et al."Measuring the degree of rainfall alteration and eco-deficit/eco-surplus of rainfall using indicators of rainfall alteration approach".ACTA GEOPHYSICA (2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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