Assessment of Red Sea temperatures in CMIP5 models for present and future climate.

The increase of the temperature in the Red Sea basin due to global warming could have a large negative effect on its marine ecosystem. Consequently, there is a growing interest, from the scientific community and public organizations, in obtaining reliable projections of the Red Sea temperatures thro...

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Autores principales: Miguel Agulles, Gabriel Jordà, Ibrahim Hoteit, Susana Agustí, Carlos M Duarte
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:c2cd7fae6a4d4911bfeb0261dd8c28eb2021-12-02T20:08:48ZAssessment of Red Sea temperatures in CMIP5 models for present and future climate.1932-620310.1371/journal.pone.0255505https://doaj.org/article/c2cd7fae6a4d4911bfeb0261dd8c28eb2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255505https://doaj.org/toc/1932-6203The increase of the temperature in the Red Sea basin due to global warming could have a large negative effect on its marine ecosystem. Consequently, there is a growing interest, from the scientific community and public organizations, in obtaining reliable projections of the Red Sea temperatures throughout the 21st century. However, the main tool used to do climate projections, the global climate models (GCM), may not be well suited for that relatively small region. In this work we assess the skills of the CMIP5 ensemble of GCMs in reproducing different aspects of the Red Sea 3D temperature variability. The results suggest that some of the GCMs are able to reproduce the present variability at large spatial scales with accuracy comparable to medium and high-resolution hindcasts. In general, the skills of the GCMs are better inside the Red Sea than outside, in the Gulf of Aden. Based on their performance, 8 of the original ensemble of 43 GCMs have been selected to project the temperature evolution of the basin. Bearing in mind the GCM limitations, this can be an useful benchmark once the high resolution projections are available. Those models project an averaged warming at the end of the century (2080-2100) of 3.3 ±> 0.6°C and 1.6 ±> 0.4°C at the surface under the scenarios RCP8.5 and RCP4.5, respectively. In the deeper layers the warming is projected to be smaller, reaching 2.2 ±> 0.5°C and 1.5 ±> 0.3°C at 300 m. The projected warming will largely overcome the natural multidecadal variability, which could induce temporary and moderate decrease of the temperatures but not enough to fully counteract it. We have also estimated how the rise of the mean temperature could modify the characteristics of the marine heatwaves in the region. The results show that the average length of the heatwaves would increase ~15 times and the intensity of the heatwaves ~4 times with respect to the present conditions under the scenario RCP8.5 (10 time and 3.6 times, respectively, under scenario RCP4.5).Miguel AgullesGabriel JordàIbrahim HoteitSusana AgustíCarlos M DuartePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255505 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Miguel Agulles
Gabriel Jordà
Ibrahim Hoteit
Susana Agustí
Carlos M Duarte
Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
description The increase of the temperature in the Red Sea basin due to global warming could have a large negative effect on its marine ecosystem. Consequently, there is a growing interest, from the scientific community and public organizations, in obtaining reliable projections of the Red Sea temperatures throughout the 21st century. However, the main tool used to do climate projections, the global climate models (GCM), may not be well suited for that relatively small region. In this work we assess the skills of the CMIP5 ensemble of GCMs in reproducing different aspects of the Red Sea 3D temperature variability. The results suggest that some of the GCMs are able to reproduce the present variability at large spatial scales with accuracy comparable to medium and high-resolution hindcasts. In general, the skills of the GCMs are better inside the Red Sea than outside, in the Gulf of Aden. Based on their performance, 8 of the original ensemble of 43 GCMs have been selected to project the temperature evolution of the basin. Bearing in mind the GCM limitations, this can be an useful benchmark once the high resolution projections are available. Those models project an averaged warming at the end of the century (2080-2100) of 3.3 ±> 0.6°C and 1.6 ±> 0.4°C at the surface under the scenarios RCP8.5 and RCP4.5, respectively. In the deeper layers the warming is projected to be smaller, reaching 2.2 ±> 0.5°C and 1.5 ±> 0.3°C at 300 m. The projected warming will largely overcome the natural multidecadal variability, which could induce temporary and moderate decrease of the temperatures but not enough to fully counteract it. We have also estimated how the rise of the mean temperature could modify the characteristics of the marine heatwaves in the region. The results show that the average length of the heatwaves would increase ~15 times and the intensity of the heatwaves ~4 times with respect to the present conditions under the scenario RCP8.5 (10 time and 3.6 times, respectively, under scenario RCP4.5).
format article
author Miguel Agulles
Gabriel Jordà
Ibrahim Hoteit
Susana Agustí
Carlos M Duarte
author_facet Miguel Agulles
Gabriel Jordà
Ibrahim Hoteit
Susana Agustí
Carlos M Duarte
author_sort Miguel Agulles
title Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
title_short Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
title_full Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
title_fullStr Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
title_full_unstemmed Assessment of Red Sea temperatures in CMIP5 models for present and future climate.
title_sort assessment of red sea temperatures in cmip5 models for present and future climate.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/c2cd7fae6a4d4911bfeb0261dd8c28eb
work_keys_str_mv AT miguelagulles assessmentofredseatemperaturesincmip5modelsforpresentandfutureclimate
AT gabrieljorda assessmentofredseatemperaturesincmip5modelsforpresentandfutureclimate
AT ibrahimhoteit assessmentofredseatemperaturesincmip5modelsforpresentandfutureclimate
AT susanaagusti assessmentofredseatemperaturesincmip5modelsforpresentandfutureclimate
AT carlosmduarte assessmentofredseatemperaturesincmip5modelsforpresentandfutureclimate
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