Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations

Since 2014, the global land and sea surface temperature has scaled 0.23 °C above the decadal average (2009–2018). Reports indicate that Mediterranean Sea temperatures have been rising at faster rates than in the global ocean. Oceanographic time series of physical and biogeochemical data collected fr...

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Main Authors: Nixon Bahamon, Jacopo Aguzzi, Miguel Ángel Ahumada-Sempoal, Raffaele Bernardello, Charlotte Reuschel, Joan Baptista Company, Francesc Peters, Ana Gordoa, Joan Navarro, Zoila Velásquez, Antonio Cruzado
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/20/9/2658
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author Nixon Bahamon
Jacopo Aguzzi
Miguel Ángel Ahumada-Sempoal
Raffaele Bernardello
Charlotte Reuschel
Joan Baptista Company
Francesc Peters
Ana Gordoa
Joan Navarro
Zoila Velásquez
Antonio Cruzado
author_facet Nixon Bahamon
Jacopo Aguzzi
Miguel Ángel Ahumada-Sempoal
Raffaele Bernardello
Charlotte Reuschel
Joan Baptista Company
Francesc Peters
Ana Gordoa
Joan Navarro
Zoila Velásquez
Antonio Cruzado
author_sort Nixon Bahamon
collection DOAJ
description Since 2014, the global land and sea surface temperature has scaled 0.23 °C above the decadal average (2009–2018). Reports indicate that Mediterranean Sea temperatures have been rising at faster rates than in the global ocean. Oceanographic time series of physical and biogeochemical data collected from an onboard and a multisensor mooring array in the northwestern Mediterranean Sea (Blanes submarine canyon, Balearic Sea) during 2009–2018 revealed an abrupt temperature rising since 2014, in line with regional and global warming. Since 2014, the oligotrophic conditions of the water column have intensified, with temperature increasing 0.61 °C on the surface and 0.47 °C in the whole water column in continental shelf waters. Water transparency has increased due to a decrease in turbidity anomaly of −0.1 FTU. Since 2013, inshore chlorophyll <i>a</i> concentration remained below the average (−0.15 mg·l<sup>−1</sup>) and silicates showed a declining trend. The mixed layer depth showed deepening in winter and remained steady in summer. The net surface heat fluxes did not show any trend linked to the local warming, probably due to the influence of incoming offshore waters produced by the interaction between the Northern Current and the submarine canyon. Present regional and global water heating pattern is increasing the stress of highly diverse coastal ecosystems at unprecedented levels, as reported by the literature. The strengthening of the oligotrophic conditions in the study area may also apply as a cautionary warning to similar coastal ecosystems around the world following the global warming trend.
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spelling doaj.art-c9d3c35cec54400b89636bc2024ad66e2023-11-19T23:38:53ZengMDPI AGSensors1424-82202020-05-01209265810.3390/s20092658Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed StationsNixon Bahamon0Jacopo Aguzzi1Miguel Ángel Ahumada-Sempoal2Raffaele Bernardello3Charlotte Reuschel4Joan Baptista Company5Francesc Peters6Ana Gordoa7Joan Navarro8Zoila Velásquez9Antonio Cruzado10Instituto de Ciencias del Mar–CSIC, 08003 Barcelona, SpainInstituto de Ciencias del Mar–CSIC, 08003 Barcelona, SpainCoastal Dynamics Laboratory, Universidad del Mar, Puerto Ángel, 70902 Oaxaca, MexicoDepartment of Earth Sciences, Barcelona Supercomputing Center, 08034 Barcelona, SpainDepartment of Chemistry and Biology, Hochschule Fresenius University of Applied Sciences, 65510 Idstein, GermanyInstituto de Ciencias del Mar–CSIC, 08003 Barcelona, SpainInstituto de Ciencias del Mar–CSIC, 08003 Barcelona, SpainCentro de Estudios Avanzados de Blanes–CSIC, 17300 Blanes, SpainInstituto de Ciencias del Mar–CSIC, 08003 Barcelona, SpainOceans Catalonia International SL, 17300 Blanes, SpainOceans Catalonia International SL, 17300 Blanes, SpainSince 2014, the global land and sea surface temperature has scaled 0.23 °C above the decadal average (2009–2018). Reports indicate that Mediterranean Sea temperatures have been rising at faster rates than in the global ocean. Oceanographic time series of physical and biogeochemical data collected from an onboard and a multisensor mooring array in the northwestern Mediterranean Sea (Blanes submarine canyon, Balearic Sea) during 2009–2018 revealed an abrupt temperature rising since 2014, in line with regional and global warming. Since 2014, the oligotrophic conditions of the water column have intensified, with temperature increasing 0.61 °C on the surface and 0.47 °C in the whole water column in continental shelf waters. Water transparency has increased due to a decrease in turbidity anomaly of −0.1 FTU. Since 2013, inshore chlorophyll <i>a</i> concentration remained below the average (−0.15 mg·l<sup>−1</sup>) and silicates showed a declining trend. The mixed layer depth showed deepening in winter and remained steady in summer. The net surface heat fluxes did not show any trend linked to the local warming, probably due to the influence of incoming offshore waters produced by the interaction between the Northern Current and the submarine canyon. Present regional and global water heating pattern is increasing the stress of highly diverse coastal ecosystems at unprecedented levels, as reported by the literature. The strengthening of the oligotrophic conditions in the study area may also apply as a cautionary warning to similar coastal ecosystems around the world following the global warming trend.https://www.mdpi.com/1424-8220/20/9/2658marine-observing systemsmultiparametric buoy profilinglong time-serieswater warmingoligotrophy
spellingShingle Nixon Bahamon
Jacopo Aguzzi
Miguel Ángel Ahumada-Sempoal
Raffaele Bernardello
Charlotte Reuschel
Joan Baptista Company
Francesc Peters
Ana Gordoa
Joan Navarro
Zoila Velásquez
Antonio Cruzado
Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
Sensors
marine-observing systems
multiparametric buoy profiling
long time-series
water warming
oligotrophy
title Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
title_full Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
title_fullStr Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
title_full_unstemmed Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
title_short Stepped Coastal Water Warming Revealed by Multiparametric Monitoring at NW Mediterranean Fixed Stations
title_sort stepped coastal water warming revealed by multiparametric monitoring at nw mediterranean fixed stations
topic marine-observing systems
multiparametric buoy profiling
long time-series
water warming
oligotrophy
url https://www.mdpi.com/1424-8220/20/9/2658
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