Physical and biological characteristics of the winter-summer transition in the Central Red Sea

Handle URI:
http://hdl.handle.net/10754/625838
Title:
Physical and biological characteristics of the winter-summer transition in the Central Red Sea
Authors:
Zarokanellos, Nikolaos ( 0000-0002-6235-6198 ) ; Papadopoulos, Vassilis P. ( 0000-0001-5877-5149 ) ; Sofianos, Sarantis. S. ( 0000-0001-6325-513X ) ; Jones, Burton ( 0000-0002-9599-1593 )
Abstract:
The Central Red Sea (CRS) lies between two distinct hydrographic and atmospheric regimes. In the southern Red Sea, seasonal monsoon reversal regulates the exchange of water between the Red Sea and the Indian Ocean. In the northern Red Sea, intermediate and occasionally deep water are formed during winter to sustain the basin's overturning circulation. Highly variable mesoscale eddies and the northward flowing eastern boundary current (EBC) determine the physical and biogeochemical characteristics of the CRS. Ship-based and glider observations in the CRS between March and June 2013 capture key features of the transition from winter to summer and depict the impact of the eddy activity on the EBC flow. Less saline and relatively warmer water of Indian Ocean origin reaches the CRS via the EBC. Initially, an anticyclonic eddy with diameter of 140 km penetrating to 150m depth with maximum velocities up to 30–35 cm s prevails in the CRS. This anticyclonic eddy appears to block or at least redirect the northward flow of the EBC. Dissipation of the eddy permits the near-coastal, northward flow of the EBC and gives place to a smaller cyclonic eddy with a diameter of about 50 km penetrating to 200 m depth. By the end of May, as the northerly winds become stronger and persistent throughout the basin, characteristic of the summer southwest monsoon wind regime, the EBC, and its associated lower salinity water became less evident, replaced by the saltier surface water that characterizes the onset of the summer stratification in the CRS.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Zarokanellos ND, Papadopoulos VP, Sofianos SS, Jones BH (2017) Physical and biological characteristics of the winter-summer transition in the Central Red Sea. Journal of Geophysical Research: Oceans 122: 6355–6370. Available: http://dx.doi.org/10.1002/2017jc012882.
Publisher:
Wiley-Blackwell
Journal:
Journal of Geophysical Research: Oceans
Issue Date:
25-Jul-2017
DOI:
10.1002/2017jc012882
Type:
Article
ISSN:
2169-9275
Sponsors:
The authors gratefully acknowledge the data sources for this study: Data sets from AVISO are freely accessible online on the official website (http://www.aviso.altimetry.fr/duacs/). Hydrographic data obtained during the cruise and the several glider missions can be obtained from Nikolaos D. Zarokanellos and Burton H. Jones (KAUST). The authors acknowledge the Coastal Marine Operation Lab (CMOR) for their support during the cruise and glider deployments. We thank the captain and the crew of the HCMR's R/V AEGAEO for their valued help during KAUST Red Sea Expedition. Particular thanks go to Ajay Sancheti and Aya Hozumi for their help with the glider deployments. Also special thanks go to Alaa Albarakati, Sameer Hassan Gharbi, Ahmed Mohammed Taqi, Khalid Asfrahani, Ioannis Georgakakis and Elizabeth Teel for their participation in the cruise. We thank the anonymous reviewers for evaluating the paper and providing insightful suggestions. Funding from King Abdullah University of Science and Technology (KAUST) supported the research in this publication.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/2017JC012882/full
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZarokanellos, Nikolaosen
dc.contributor.authorPapadopoulos, Vassilis P.en
dc.contributor.authorSofianos, Sarantis. S.en
dc.contributor.authorJones, Burtonen
dc.date.accessioned2017-10-09T09:03:13Z-
dc.date.available2017-10-09T09:03:13Z-
dc.date.issued2017-07-25en
dc.identifier.citationZarokanellos ND, Papadopoulos VP, Sofianos SS, Jones BH (2017) Physical and biological characteristics of the winter-summer transition in the Central Red Sea. Journal of Geophysical Research: Oceans 122: 6355–6370. Available: http://dx.doi.org/10.1002/2017jc012882.en
dc.identifier.issn2169-9275en
dc.identifier.doi10.1002/2017jc012882en
dc.identifier.urihttp://hdl.handle.net/10754/625838-
dc.description.abstractThe Central Red Sea (CRS) lies between two distinct hydrographic and atmospheric regimes. In the southern Red Sea, seasonal monsoon reversal regulates the exchange of water between the Red Sea and the Indian Ocean. In the northern Red Sea, intermediate and occasionally deep water are formed during winter to sustain the basin's overturning circulation. Highly variable mesoscale eddies and the northward flowing eastern boundary current (EBC) determine the physical and biogeochemical characteristics of the CRS. Ship-based and glider observations in the CRS between March and June 2013 capture key features of the transition from winter to summer and depict the impact of the eddy activity on the EBC flow. Less saline and relatively warmer water of Indian Ocean origin reaches the CRS via the EBC. Initially, an anticyclonic eddy with diameter of 140 km penetrating to 150m depth with maximum velocities up to 30–35 cm s prevails in the CRS. This anticyclonic eddy appears to block or at least redirect the northward flow of the EBC. Dissipation of the eddy permits the near-coastal, northward flow of the EBC and gives place to a smaller cyclonic eddy with a diameter of about 50 km penetrating to 200 m depth. By the end of May, as the northerly winds become stronger and persistent throughout the basin, characteristic of the summer southwest monsoon wind regime, the EBC, and its associated lower salinity water became less evident, replaced by the saltier surface water that characterizes the onset of the summer stratification in the CRS.en
dc.description.sponsorshipThe authors gratefully acknowledge the data sources for this study: Data sets from AVISO are freely accessible online on the official website (http://www.aviso.altimetry.fr/duacs/). Hydrographic data obtained during the cruise and the several glider missions can be obtained from Nikolaos D. Zarokanellos and Burton H. Jones (KAUST). The authors acknowledge the Coastal Marine Operation Lab (CMOR) for their support during the cruise and glider deployments. We thank the captain and the crew of the HCMR's R/V AEGAEO for their valued help during KAUST Red Sea Expedition. Particular thanks go to Ajay Sancheti and Aya Hozumi for their help with the glider deployments. Also special thanks go to Alaa Albarakati, Sameer Hassan Gharbi, Ahmed Mohammed Taqi, Khalid Asfrahani, Ioannis Georgakakis and Elizabeth Teel for their participation in the cruise. We thank the anonymous reviewers for evaluating the paper and providing insightful suggestions. Funding from King Abdullah University of Science and Technology (KAUST) supported the research in this publication.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/2017JC012882/fullen
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectCentral Red Seaen
dc.subjecteastern boundary currenten
dc.subjecteddy variabilityen
dc.subjectglideren
dc.subjectwinter-summer transitionen
dc.titlePhysical and biological characteristics of the winter-summer transition in the Central Red Seaen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalJournal of Geophysical Research: Oceansen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionHellenic Centre for Marine Research; Anavissos Greeceen
dc.contributor.institutionDepartment of Environmental Physics; National and Kapodistrian University of Athens; Athens Greeceen
kaust.authorZarokanellos, Nikolaosen
kaust.authorJones, Burtonen
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