Oceanic-atmospheric modes of variability and their influence on riverine input to coastal Louisiana and Mississippi

被引:23
|
作者
Sanchez-Rubio, Guillermo [1 ]
Perry, Harriet M. [1 ]
Biesiot, Patricia M. [2 ]
Johnson, Donald R. [1 ]
Lipcius, Romuald N. [3 ]
机构
[1] Univ So Mississippi, Ctr Fisheries Res & Dev, Gulf Coast Res Lab, Ocean Springs, MS 39564 USA
[2] Univ So Mississippi, Dept Biol Sci, Hattiesburg, MS 39406 USA
[3] Virginia Inst Marine Sci, Dept Fisheries Sci, Coll William & Mary, Gloucester Point, VA 23062 USA
关键词
Mississippi River flow; Pascagoula River flow; Pacific Decadal Oscillation; Atlantic Multidecadal Oscillation; North Atlantic Oscillation; El Nino Southern Oscillation; ATLANTIC MULTIDECADAL OSCILLATION; HEMISPHERE WARM POOL; EL-NINO; NORTHERN-HEMISPHERE; UNITED-STATES; INTERANNUAL VARIABILITY; CIRCULATION ANOMALIES; SOUTHERN OSCILLATION; EQUATORIAL PACIFIC; ENSO;
D O I
10.1016/j.jhydrol.2010.10.034
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The present study examined the individual and combined influences of four oceanic-atmospheric modes of variability on northcentral Gulf of Mexico streamflows. Mississippi River and Pascagoula River mean flows, between phases of long-term modes of variability, were compared using a nonparametric rank-sum test (Mann-Whitney U-test). While the combination of Pacific Decadal Oscillation (PDO), Atlantic Multidecadal Oscillation (AMO), and North Atlantic Oscillation (NAO) determined long-term Mississippi River regimes, the coupling of AMO and NAO determined long-lasting Pascagoula River flow regimes. Mississippi River flow was higher during PDO warm, AMO cold (AMOc), and NAO positive (NAOp) phases than during PDO cold, AMO warm (AMOw), and NAO negative (NAOn) phases. Pascagoula River flow was higher during AMOc and NAOp phases than during AMOw and NAOn phases. During the long-term low Pascagoula River flow regime (AMOw/NAOn phase), fluctuations in river flow were associated with PDO or El Nino Southern Oscillation (ENSO). Pascagoula River flow decreased from PDOw to PDOc phases and from ENSO warm to ENSO neutral to ENSO cold phases. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:72 / 81
页数:10
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