Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe

Abstract Climate simulations for the North Atlantic and Europe for recent and future conditions simulated with the regionally coupled ROM model are analyzed and compared to the results from the MPI‐ESM. The ROM simulations also include a biogeochemistry and ocean tides. For recent climate conditions...

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Autores principales:	Dmitry V. Sein, Matthias Gröger, William Cabos, Francisco J. Alvarez‐Garcia, Stefan Hagemann, Joaquim G. Pinto, Alfredo Izquierdo, Alba de laVara, Nikolay V. Koldunov, Anton Yu. Dvornikov, Natalia Limareva, Evgenia Alekseeva, Benjamin Martinez‐Lopez, Daniela Jacob
Formato:	article
Lenguaje:	EN
Publicado:	American Geophysical Union (AGU) 2020
Materias:	climate change regional climate modeling ocean biogeochemistry North Atlantic Physical geography GB3-5030 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/12706608a90140f2a96b7c29af02daf9
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spelling	oai:doaj.org-article:12706608a90140f2a96b7c29af02daf92021-11-15T14:20:26ZRegionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe1942-246610.1029/2019MS001646https://doaj.org/article/12706608a90140f2a96b7c29af02daf92020-08-01T00:00:00Zhttps://doi.org/10.1029/2019MS001646https://doaj.org/toc/1942-2466Abstract Climate simulations for the North Atlantic and Europe for recent and future conditions simulated with the regionally coupled ROM model are analyzed and compared to the results from the MPI‐ESM. The ROM simulations also include a biogeochemistry and ocean tides. For recent climate conditions, ROM generally improves the simulations compared to the driving model MPI‐ESM. Reduced oceanic biases in the Northern Atlantic are found, as well as a better simulation of the atmospheric circulation, notably storm tracks and blocking. Regarding future climate projections for the 21st century following the RCP 4.5 and 8.5 scenarios, MPI‐ESM and ROM largely agree qualitatively on the climate change signal over Europe. However, many important differences are identified. For example, ROM shows an SST cooling in the Subpolar Gyre, which is not present in MPI‐ESM. Under the RCP8.5 scenario, ROM Arctic sea ice cover is thinner and reaches the seasonally ice‐free state by 2055, well before MPI‐ESM. This shows the decisive importance of higher ocean resolution and regional coupling for determining the regional responses to global warming trends. Regarding biogeochemistry, both ROM and MPI‐ESM simulate a widespread decline in winter nutrient concentration in the North Atlantic of up to ~35%. On the other hand, the phytoplankton spring bloom in the Arctic and in the North‐Western Atlantic starts earlier, and the yearly primary production is enhanced in the Arctic in the late 21st century. These results clearly demonstrate the added value of ROM to determine more detailed and more reliable climate projections at the regional scale.Dmitry V. SeinMatthias GrögerWilliam CabosFrancisco J. Alvarez‐GarciaStefan HagemannJoaquim G. PintoAlfredo IzquierdoAlba de laVaraNikolay V. KoldunovAnton Yu. DvornikovNatalia LimarevaEvgenia AlekseevaBenjamin Martinez‐LopezDaniela JacobAmerican Geophysical Union (AGU)articleclimate changeregional climate modelingocean biogeochemistryNorth AtlanticPhysical geographyGB3-5030OceanographyGC1-1581ENJournal of Advances in Modeling Earth Systems, Vol 12, Iss 8, Pp n/a-n/a (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change regional climate modeling ocean biogeochemistry North Atlantic Physical geography GB3-5030 Oceanography GC1-1581
spellingShingle	climate change regional climate modeling ocean biogeochemistry North Atlantic Physical geography GB3-5030 Oceanography GC1-1581 Dmitry V. Sein Matthias Gröger William Cabos Francisco J. Alvarez‐Garcia Stefan Hagemann Joaquim G. Pinto Alfredo Izquierdo Alba de laVara Nikolay V. Koldunov Anton Yu. Dvornikov Natalia Limareva Evgenia Alekseeva Benjamin Martinez‐Lopez Daniela Jacob Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
description	Abstract Climate simulations for the North Atlantic and Europe for recent and future conditions simulated with the regionally coupled ROM model are analyzed and compared to the results from the MPI‐ESM. The ROM simulations also include a biogeochemistry and ocean tides. For recent climate conditions, ROM generally improves the simulations compared to the driving model MPI‐ESM. Reduced oceanic biases in the Northern Atlantic are found, as well as a better simulation of the atmospheric circulation, notably storm tracks and blocking. Regarding future climate projections for the 21st century following the RCP 4.5 and 8.5 scenarios, MPI‐ESM and ROM largely agree qualitatively on the climate change signal over Europe. However, many important differences are identified. For example, ROM shows an SST cooling in the Subpolar Gyre, which is not present in MPI‐ESM. Under the RCP8.5 scenario, ROM Arctic sea ice cover is thinner and reaches the seasonally ice‐free state by 2055, well before MPI‐ESM. This shows the decisive importance of higher ocean resolution and regional coupling for determining the regional responses to global warming trends. Regarding biogeochemistry, both ROM and MPI‐ESM simulate a widespread decline in winter nutrient concentration in the North Atlantic of up to ~35%. On the other hand, the phytoplankton spring bloom in the Arctic and in the North‐Western Atlantic starts earlier, and the yearly primary production is enhanced in the Arctic in the late 21st century. These results clearly demonstrate the added value of ROM to determine more detailed and more reliable climate projections at the regional scale.
format	article
author	Dmitry V. Sein Matthias Gröger William Cabos Francisco J. Alvarez‐Garcia Stefan Hagemann Joaquim G. Pinto Alfredo Izquierdo Alba de laVara Nikolay V. Koldunov Anton Yu. Dvornikov Natalia Limareva Evgenia Alekseeva Benjamin Martinez‐Lopez Daniela Jacob
author_facet	Dmitry V. Sein Matthias Gröger William Cabos Francisco J. Alvarez‐Garcia Stefan Hagemann Joaquim G. Pinto Alfredo Izquierdo Alba de laVara Nikolay V. Koldunov Anton Yu. Dvornikov Natalia Limareva Evgenia Alekseeva Benjamin Martinez‐Lopez Daniela Jacob
author_sort	Dmitry V. Sein
title	Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
title_short	Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
title_full	Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
title_fullStr	Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
title_full_unstemmed	Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe
title_sort	regionally coupled atmosphere‐ocean‐marine biogeochemistry model rom: 2. studying the climate change signal in the north atlantic and europe
publisher	American Geophysical Union (AGU)
publishDate	2020
url	https://doaj.org/article/12706608a90140f2a96b7c29af02daf9
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Regionally Coupled Atmosphere‐Ocean‐Marine Biogeochemistry Model ROM: 2. Studying the Climate Change Signal in the North Atlantic and Europe

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