DOI: 10.1007/s00382-013-1926-2
Scopus记录号: 2-s2.0-84894356057
论文题名: Synoptic volumetric variations and flushing of the Tampa Bay estuary
作者: Wilson M. ; Meyers S.D. ; Luther M.E.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-05-06 起始页码: 1587
结束页码: 1594
语种: 英语
英文关键词: ENSO
; Estuary
; Seasonal variability
; Synoptic variability
; Tampa Bay
; Wavelet
英文摘要: Two types of analyses are used to investigate the synoptic wind-driven flushing of Tampa Bay in response to the El Niño-Southern Oscillation (ENSO) cycle from 1950 to 2007. Hourly sea level elevations from the St. Petersburg tide gauge, and wind speed and direction from three different sites around Tampa Bay are used for the study. The zonal (u) and meridional (v) wind components are rotated clockwise by 40° to obtain axial and co-axial components according to the layout of the bay. First, we use the subtidal observed water level as a proxy for mean tidal height to estimate the rate of volumetric bay outflow. Second, we use wavelet analysis to bandpass sea level and wind data in the time-frequency domain to isolate the synoptic sea level and surface wind variance. For both analyses the long-term monthly climatology is removed and we focus on the volumetric and wavelet variance anomalies. The overall correlation between the Oceanic Niño Index and volumetric analysis is small due to the seasonal dependence of the ENSO response. The mean monthly climatology between the synoptic wavelet variance of elevation and axial winds are in close agreement. During the winter, El Niño (La Niña) increases (decreases) the synoptic variability, but decreases (increases) it during the summer. The difference in winter El Niño/La Niña wavelet variances is about 20 % of the climatological value, meaning that ENSO can swing the synoptic flushing of the bay by 0.22 bay volumes per month. These changes in circulation associated with synoptic variability have the potential to impact mixing and transport within the bay. © 2013 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54277
Appears in Collections: 过去全球变化的重建
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作者单位: Ocean Monitoring and Prediction Laboratory, College of Marine Science, University of South Florida, 140 7th Ave South, St. Petersburg, FL, 33701, United States
Recommended Citation:
Wilson M.,Meyers S.D.,Luther M.E.. Synoptic volumetric variations and flushing of the Tampa Bay estuary[J]. Climate Dynamics,2014-01-01,42(2017-05-06)