Scientia Marina, Vol 82, No 4 (2018)

Coastal oceanographic signatures of heat waves and extreme events of dense water formation during the period 2002-2012 (Barcelona, NW Mediterranean)


https://doi.org/10.3989/scimar.04766.26A

Jorge Guillén
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0001-7162-8135

Laura Arin
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0001-8800-5583

Jordi Salat
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0001-6139-5673

Pere Puig
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0001-6189-5504

Marta Estrada
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0001-5769-9498

Albert Palanques
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0003-2544-2342

Gonzalo Simarro
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0002-6420-5975

Josep Pascual
Institut de Ciències del Mar, CSIC, Spain
orcid http://orcid.org/0000-0002-7844-1741

Abstract


In a global context of climate change affecting the marine environment, it is important to consider the effect of extreme events in driving ecological change and to gain a better understanding of conditions to be expected under future scenarios. In this study we focus on monthly oceanographic data collected off Barcelona city during the period 2002-2012, in which extreme air temperatures and exceptional oceanographic events were reported in the western Mediterranean basin. These included two extreme heat waves and major episodes of dense water formation that produced unusually large deep-water contributions, induced oceanographic changes in the coastal zone and caused significant alterations to the marine ecosystem. To determine whether routine monitoring of oceanographic variables in a coastal zone can provide information for recognizing such large-scale events, temperature, salinity, turbidity and fluorescence were analysed to identify their signatures. The results provide an additional tool for monitoring oceanographic events and improving forecasts and future projections.

Keywords


coastal monitoring; decadal variability; water density; turbidity; fluorescence; extreme events

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References


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