Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027233 |
Trends in global flood and streamflow timing based on local water year | |
Conrad Wasko; Rory Nathan; Murray C. Peel | |
2020-06-29 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | Analysis of flood and streamflow timing has recently gained prominence as a tool for attribution of climatic changes to flooding. Such studies generally apply circular statistics to the day of maximum flow in a calendar year and use non‐parametric linear trend tests to investigate changes in flooding on a local or regional scale. Here we investigate both the center timing of streamflow and the day of maximum flow using a local water year. For each station, the start of the water year is defined as the month of lowest average monthly streamflow. This definition of water year prevents ambiguity in the direction of computed trends and enables flood and streamflow timing to be described by a normal distribution. Using the assumption of normality, we calculate the historical trend in both flood and streamflow timing using linear regression. While shifts in flood and streamflow timing are consistent with climate change and are shifting in a similar direction, shifts in the timing of the annual maxima flood are approximately three times that of streamflow timing. The results here have implications for water resources and environmental management where streamflow and flood timing are critical to planning. The applicability of the normal approximation to flood and streamflow timing will enable future analyses to use parametric statistics. |
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/281785 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Conrad Wasko,Rory Nathan,Murray C. Peel. Trends in global flood and streamflow timing based on local water year[J]. Water Resources Research,2020. |
APA | Conrad Wasko,Rory Nathan,&Murray C. Peel.(2020).Trends in global flood and streamflow timing based on local water year.Water Resources Research. |
MLA | Conrad Wasko,et al."Trends in global flood and streamflow timing based on local water year".Water Resources Research (2020). |
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