Atlantic Ocean Sea Surface Temperatures and Southeast United States streamflow variability: Associations with the recent multi-decadal decline
Atlantic Ocean Sea Surface Temperatures and Southeast United States streamflow variability: Associations with the recent multi-decadal decline
复制标题
大西洋海面温度和美国东南部水流变化：与最近数十年下降的关联
DOI：
10.1016/j.jhydrol.2019.06.051
复制
发表时间：
2019
影响因子：
6.4
通讯作者：
Bearden, Bennett
中科院分区：
文献类型：
--
作者：
Sadeghi, Sahar;Tootle, Glenn;Elliott, Emily;Lakshmi, Venkat;Therrell, Matthew;Kam, Jonghun;Bearden, Bennett
前所未有的人口增长加上环境和能源需求导致了美国东南部 (SEUS) 的水资源冲突。自 1990 年以来，阿拉巴马州、佛罗里达州和佐治亚州一直在就最低河流流量提起诉讼，以维持生态系统、渔业和能源需求，同时满足亚特兰大大都市日益增长的用水需求。对 26 个未受损的 SEUS（阿拉巴马州、佛罗里达州、佐治亚州、路易斯安那州、密西西比州、北卡罗来纳州和田纳西州）水流站的一项研究发现，过去 25 年中水流呈减少模式，并且在过去几十年中观察到更频繁的干旱期。在评估历年径流量时，1970 年代的高流量时期之后，从 1980 年代末至今径流量持续下降。大西洋 (AO) 海面温度 (SST) 与 SEUS 水流遥相关的识别可能对解释水流变化的年代际模式有价值。先前的研究已确定大西洋多年代际振荡（AMO）与 SEUS 降水和水流遥相关。目前的研究将奇异值分解（SVD）统计方法应用于AO海面温度（SST）和SEUS水流。选择来自 26 个未受损 SEUS 水流站（1952-2016）的年水流量作为水文响应，同时计算前一年（1951-2015）三个不同六个月平均值（1 月至 6 月或 JFMAMJ、4 月至 9 月或 AMJJAS、7 月至 12 月或 JASOND）的平均 AO SST。结果证实，北大西洋的一个海温区域与 SEUS 水流遥相关，并且观察到的该海温区域的数十年温度升高可能与最近观察到的 SEUS 水流的数十年下降有关。
Unprecedented population growth combined with environmental and energy demands have led to water conflict in the Southeastern United States (SEUS). The states of Alabama, Florida, and Georgia have been engaged in litigation since 1990 on minimum in-stream flows to maintain ecosystems, fisheries and energy demands while satisfying a growing thirst in metropolitan Atlanta. A study of twenty-six unimpaired SEUS (Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, and Tennessee) streamflow stations identified a decreased pattern of flow over the past ∼25 years with more frequent dry periods being observed in the last several decades. When evaluating calendar year streamflow, a period of high streamflow in the 1970’s was followed by a consistent decrease in streamflow from the late 1980’s to present. The identification of Atlantic Ocean (AO) Sea Surface Temperature (SST) teleconnections with SEUS streamflow may prove valuable in explaining decadal patterns of streamflow variability. Previous studies have identified the Atlantic Multidecadal Oscillation (AMO) as being teleconnected with SEUS precipitation and streamflow. The current research applied the Singular Value Decomposition (SVD) statistical method to AO Sea Surface Temperatures (SSTs) and SEUS streamflow. Annual streamflow volumes from the twenty-six unimpaired SEUS streamflow stations (1952–2016) were selected as the hydrologic response while average AO SSTs were calculated for three different six month averages (January to June or JFMAMJ, April to September or AMJJAS, and July to December or JASOND) for the year (1951–2015) preceding streamflow. The results confirmed an SST region in the North Atlantic as being teleconnected with SEUS streamflow and that an observed multi-decadal increase in temperatures in this SST region may be associated with the observed recent multi-decadal decline in SEUS streamflow.
登录
查看更多内容
DOI：
10.1002/joc.5257
发表时间：
2018-03
期刊：
International Journal of Climatology
影响因子：
--
作者：
Hui Wang;T. Asefa
通讯作者：
Hui Wang;T. Asefa
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
M. Newman;P. Sardeshmukh
通讯作者：
P. Sardeshmukh
影响因子：
6.4
作者：
Oubeidillah, Abdoul A.;Tootle, Glenn A.;Lamb, Kenneth
通讯作者：
Lamb, Kenneth
影响因子：
4.6
作者：
H. Lins
通讯作者：
H. Lins
科罗拉多河流域上游积雪对太平洋海面温度影响的识别
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Oubeidillah Aziz;G. Tootle;S. Gray;T. Piechota
通讯作者：
T. Piechota