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| Titel |
Decadal changes in the Red Sea Deep Water properties |
| VerfasserIn |
Turki Alraddadi, Neil Wells, Loic Jullion |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076261
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| Zusammenfassung |
| Long term variability of the Red Sea deep water (RSDW) properties was investigated using
hydrographic data stretching back to the beginning of 19th century. The analysis of the
potential temperature and salinity indicate that there is a signal of cooling and freshening
trends between 1950 to 2011 in the RSDW by an average of 35.5 x10-4 ± 5.6x10-4 oC
yr-1 and 13.8x10-4 ± 2.8x10-4 psu yr-1 respectively. Both trends of cooling and
freshening are statistically significant with a confidence level of more than 95%. This cooling
and freshening trend is consistent with net heat losses trend in the three source regions for the
deep water formation of the Red Sea by an average of -1.12 ± 0.49 Wm-2, -1.75 ± 0.49
Wm-2 and -1.58 ± 0.47 Wm-2 for the northern part of the Red Sea, and the Gulfs of
Suez and Aqaba respectively. The results suggest that the potential temperature and
salinity has decreased between 1950 and 2011 by as much as 0.12 oC and 0.13 psu
respectively.
These changes in the potential temperature and salinity in the RSDW are consistent
throughout the Red Sea basin (subdivided to 2o grid) for the last three decades (1977-2011). |
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