Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027703 |
Derivation of interannual climate elasticity of streamflow | |
Yin Tang; Qiuhong Tang; Lu Zhang | |
2020-11-09 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | Besides climate change (i.e., change on an average condition), streamflow change is also affected by interannual variability of climate (i.e., change from year to year). To quantify the impact of interannual climatic variability, in this study, we firstly clarify the content and definition of interannual climate elasticity that represents the sensitivity of streamflow to climatic variability from year to year and equals to the ratio of proportional annual change in streamflow and a climatic variable. Then, we analytically derive the interannual climate (i.e., potential evapotranspiration and precipitation) elasticities of streamflow by integrating the annual water balance with a conceptual hydrologic model (i.e., extended Budyko framework). At interannual scale, the terrestrial water storage change (i.e., ∆S) is a substantial component of water balance equation. Consequently, the analytical solutions of the interannual climate elasticities are functions of precipitation, potential evapotranspiration, and ∆S. The newly derived interannual climate elasticities are applied to 335 MOPEX watersheds as a case study to evaluate the hypotheses in this study and construct the regional map of the streamflow sensitivity to interannual variability of climate. Results show that the interannual precipitation elasticity is generally larger than the absolute interannual potential evapotranspiration elasticity across study watersheds. Spatially, streamflow in the arid region tends to be more sensitive to interannual variability of climate than that in humid region. This study may be useful for understanding the extreme events and annual streamflow change caused by the ∆S (e.g., groundwater abstraction) across watersheds or regions. |
领域 | 资源环境 |
URL | 查看原文 |
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/304006 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Yin Tang,Qiuhong Tang,Lu Zhang. Derivation of interannual climate elasticity of streamflow[J]. Water Resources Research,2020. |
APA | Yin Tang,Qiuhong Tang,&Lu Zhang.(2020).Derivation of interannual climate elasticity of streamflow.Water Resources Research. |
MLA | Yin Tang,et al."Derivation of interannual climate elasticity of streamflow".Water Resources Research (2020). |
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