Mathematics – Logic
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3421609m&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 21, CiteID L21609
Mathematics
Logic
8
Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Oceanography: General: Marginal And Semi-Enclosed Seas, Oceanography: General: Time Series Experiments (1872, 3270, 4475), Oceanography: General: Water Masses, Oceanography: General: Instruments And Techniques
Scientific paper
Hydrological decadal trends of Mediterranean waters (MWs, e.g., salinification of ~0.01/decade) have been imputed to local environmental changes, hence assuming unchanged inflowing Atlantic water (AW), which is an unchecked hypothesis. To better understand the long-term changes in the sea, an autonomous CTD has been moored, among others, on the Moroccan shelf in the strait of Gibraltar. We show that the inflowing AW salinity displays a marked seasonal variability, due to mixing conditions, and a huge interannual variability, having continuously increased by ~0.05/year in 2003-2007 the AW yearly trend is dozens times larger than the MWs decadal one. The ~0.20 overall salinification being associated with a ~0.12 kg/m3 densification, reliable data analyses and numerical models dealing with the sea functioning must definitely consider the interannual variability of the inflow. Autonomous CTDs are efficient instruments and the variance criterion is a valuable data selection technique.
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