Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC)
There is a growing debate regarding the influence of solar activity on climate change as the solar forcing signal on decadal/multidecadal timescales is not robust in long-term reconstructed climate data or numerical simulations. However, solar forcing could be amplified by ocean–atmosphere coupling...
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1165386/full |
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| author | Aihua Ye Zhipeng Zhu Ruyi Zhang Ziniu Xiao Limin Zhou Limin Zhou |
| author_facet | Aihua Ye Zhipeng Zhu Ruyi Zhang Ziniu Xiao Limin Zhou Limin Zhou |
| author_sort | Aihua Ye |
| collection | DOAJ |
| description | There is a growing debate regarding the influence of solar activity on climate change as the solar forcing signal on decadal/multidecadal timescales is not robust in long-term reconstructed climate data or numerical simulations. However, solar forcing could be amplified by ocean–atmosphere coupling in sensitive regions, including the North Atlantic Ocean (N.A.). This study assessed the influence of varied total solar irradiance (TSI) due to the effects of solar activity on Atlantic Meridional Overturning Circulation (AMOC) based on an Earth System model with intermediate complexity (PLASIM-GENIE). Three groups of experiments with different TSI series; i.e., constant (NS), decadal varied (DS), and reconstructed whole (AS) for 1610–2000, were conducted and the AMOC response was investigated. The results showed that the internal forcing of the climate system led to quasi-35-year and quasi-65-year AMOC cycles and a significant and stable negative correlation between TSI and AMOC on a multidecadal timescale. The period was significantly extended due to solar forcing. The declining AMOC trend occurred in simulations after 1800. Thus, solar forcing contributed to a weakening AMOC at a rate of 0.41 Sv per century. The decadal variation in TSI was the main contributor to this decline due to solar forcing. |
| first_indexed | 2024-03-13T10:27:31Z |
| format | Article |
| id | doaj.art-075bc627e3404bb28b86d312315184a0 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-13T10:27:31Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-075bc627e3404bb28b86d312315184a02023-05-19T04:45:22ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-05-011110.3389/feart.2023.11653861165386Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC)Aihua Ye0Zhipeng Zhu1Ruyi Zhang2Ziniu Xiao3Limin Zhou4Limin Zhou5Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, ChinaKey Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, ChinaKey Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, ChinaState Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Beijing, ChinaKey Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, ChinaInstitute of Eco-Chongming, Shanghai, ChinaThere is a growing debate regarding the influence of solar activity on climate change as the solar forcing signal on decadal/multidecadal timescales is not robust in long-term reconstructed climate data or numerical simulations. However, solar forcing could be amplified by ocean–atmosphere coupling in sensitive regions, including the North Atlantic Ocean (N.A.). This study assessed the influence of varied total solar irradiance (TSI) due to the effects of solar activity on Atlantic Meridional Overturning Circulation (AMOC) based on an Earth System model with intermediate complexity (PLASIM-GENIE). Three groups of experiments with different TSI series; i.e., constant (NS), decadal varied (DS), and reconstructed whole (AS) for 1610–2000, were conducted and the AMOC response was investigated. The results showed that the internal forcing of the climate system led to quasi-35-year and quasi-65-year AMOC cycles and a significant and stable negative correlation between TSI and AMOC on a multidecadal timescale. The period was significantly extended due to solar forcing. The declining AMOC trend occurred in simulations after 1800. Thus, solar forcing contributed to a weakening AMOC at a rate of 0.41 Sv per century. The decadal variation in TSI was the main contributor to this decline due to solar forcing.https://www.frontiersin.org/articles/10.3389/feart.2023.1165386/fullsolar forcingAMOCmultidecadal variabilitysensitivity testperiod |
| spellingShingle | Aihua Ye Zhipeng Zhu Ruyi Zhang Ziniu Xiao Limin Zhou Limin Zhou Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) Frontiers in Earth Science solar forcing AMOC multidecadal variability sensitivity test period |
| title | Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) |
| title_full | Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) |
| title_fullStr | Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) |
| title_full_unstemmed | Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) |
| title_short | Influence of solar forcing on multidecadal variability in the Atlantic meridional overturning circulation (AMOC) |
| title_sort | influence of solar forcing on multidecadal variability in the atlantic meridional overturning circulation amoc |
| topic | solar forcing AMOC multidecadal variability sensitivity test period |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1165386/full |
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