کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10223869 1701062 2018 48 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Upwelling indices for comparative ecosystem studies: Variability in the Benguela Upwelling System
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
Upwelling indices for comparative ecosystem studies: Variability in the Benguela Upwelling System
چکیده انگلیسی
The influence of climate variability on Eastern Boundary Upwelling Ecosystems (EBUEs) is evident through changes in productivity and shifts in species' distributions, yet to date, metrics of upwelling variability appropriate for comparative ecosystem studies have yet to be implemented. Here, we present synoptic-scale upwelling indices to quantify inter-annual to decadal variations in Ekman transport, at temporal and spatial scales relevant to the biota of EBUEs, and apply them to the Benguela Upwelling System (BUS). From 1979 to 2015, interannual, decadal-scale, and unidirectional variability in upwelling was observed, including a significant recent decrease in upwelling in the northern BUS, and a significant increase on the Agulhas Bank. These trends are associated with changes in the number of upwelling days and events in these regions, and correspond to a shift in the meridional positioning of the South Atlantic High pressure system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Marine Systems - Volume 188, December 2018, Pages 3-16
نویسندگان
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