Annual runoff coefficient variation in a changing environment
A global perspective
Bibliographic Data
| ID | 15548731 |
|---|---|
| Authors | Jinghua Xiong (0000-0001-7435-9911, Wuhan University), Jiabo Yin (0000-0002-2305-8729, Wuhan University), Shenglian Guo (0000-0002-8594-4988, Wuhan University, corresponding author), Shaokun He (0000-0002-4562-2319, Southern University of Science and Technology), Jie Chen (0000-0002-9254-4413, Wuhan University), Abhishek Abhishek (0000-0002-1704-4486, Tokyo Institute of Technology) |
| Year | 2022 |
| Volume | 17 |
| Issue | 6 |
| Pages | 064006-064006 |
| Publication date | 2022-05-13 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/ac62ad |
| OpenAlex | W4280653373 |
| Language | EN |
| Citations received | 1 |
| References cited | 68 |
Assessing variations in the annual runoff coefficient (RC) on a basin scale is crucial for understanding the hydrological cycle under natural and anthropogenic changes, yet a systematic global assessment remains unexamined from a water-balance perspective. Here, we combine observation-based runoff and precipitation datasets to quantify basin-averaged RC changes in 433 major global river basins during the period 1985–2014. Thereafter, the ratios of terrestrial water storage changes and evaporation to precipitation (SC and EC, respectively) are obtained to evaluate the factors driving the RC changes. The results show that 12.93% of the basins experience significant decreasing trends in RC, with slopes ranging from −0.55 ± 0.17% yr −1 to −0.05 ± 0.02% yr −1 , while 6.47% basins show increasing RCs with slopes ranging from 0.09 ± 0.04% yr −1 to 0.56 ± 0.17% yr −1 . A higher percentage (62.95%) of basins reveal decreasing RCs for the regions with considerable human intervention compared to those (58.24%) with dominant natural variability. Changes in EC dominate the RC changes over 79.68% of the basins for both increasing and decreasing trends, with a maximum contribution (53.65%) from transpiration, among other partitioned components. Corroborated inferences from explicit investigation in the Yangtze River basin highlight the robustness of our results for global water managers and policymakers
Drainage basin · Geography · Geomorphology · Hydrology (agriculture · Meteorology · Physical geography · Potential evaporation · Precipitation · Structural basin · Surface runoff · Water balance · Water cycle · Climate variability and models · Environmental Science · Geophysics and Gravity Measurements · Hydrology and Watershed Management Studies · Ecology · Geology
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| Unique citing works | 1 |
|---|---|
| Citations per year | 0,5 |
| Citation span | 2024 - 2024 (1) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 1 |