The changing hydroclimatology of Southeastern U.S.
The changing hydroclimatology of Southeastern U.S.
复制标题
DOI：
10.1016/j.jhydrol.2017.02.039
复制
发表时间：
2017-05
影响因子：
6.4
通讯作者：
J. Engström;P. Waylen
中科院分区：
文献类型：
--
作者：
J. Engström;P. Waylen
几十年来，美国东南部的水资源分配问题引发了各州之间的政治冲突。有限的水资源不仅需要满足快速增长的城市地区的需求，而且还需要满足电力工业、娱乐需求和环境的需求。尽管水资源变异性归因于各种遥相关，但对长期水资源可用性的了解有限。本文分析了美国东南部18个流域的历史（1952-2014）降水和流量数据，分析了水文气候学的长期变化，这些变化可能是由城市化、气候变化和/或降水模式变化引起的。Pettitt检验表明，20世纪90年代末降水-径流关系发生了变化。转换后，流域记录显示降水储存量减少，从而导致流量增加。
The allocation of the water resources of Southeastern United States have given rise to inter-state political conflicts for decades. The limited water resource are not only required to satisfy the demand of rapidly growing urban areas, but also the power industry, recreational needs and the environment. Although water resource variability has been attributed to various teleconnections, knowledge of long-term water resource availability is limited. In this paper historical (1952–2014) precipitation and streamflow data from 18 basins in southeast United States are analyzed for long-term changes in the hydroclimatology, possibly brought by urbanization, climate change and/or changed precipitation patterns. A Pettitt test indicates a change in the precipitation-runoff relationship in the late 1990s. After the shift, basin records indicate decreased precipitation storage and consequently increased streamflow.