The nature of 60-year oscillations of the Arctic climate according to the data of the INM RAS climate model
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Evgenii M. Volodin
Abstract
Using the data of pre-industrial experiment with the INM-CM5 climate model for the period of 1200 years, we study the mechanism of natural oscillations of Arctic climate with the period of about 60 years. It is shown that for a quarter of the period prior to the Arctic warming there is a flow of Atlantic water into the Arctic ocean (AO) being more intense than usual, the salinity and density are less than usual near the coast and shelf border. As the result of advection of Atlantic water after Arctic warming, the water near the coast and shelf border becomes more salty and heavy, which leads to a weakening of the flow of Atlantic water and the change of oscillation phase. The conclusions are confirmed by calculations of the generation of anomalies of temperature, salinity, and velocity of currents by different terms, as well as estimation of the contribution of various components to the change of oscillation phase.
Funding: The work was performed in INM RAS. The numerical experiment with the climate model and the analysis of mechanisms supporting climate oscillations in Arctic were supported by the Russian Science Foundation (17–17–01295). The analysis of oscillation generation in the North Atlantic was supported by the Russian Foundation for Basic Research (17–05–00628).
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Coupling the Earth system model INMCM with the biogeochemical flux model
- Design and development of the SLAV-INMIO-CICE coupled model for seasonal prediction and climate research
- Low frequency variability and sensitivity of the Atlantic meridional overturning circulation in selected IPCC climate models
- INM RAS coupled atmosphere–ionosphere general circulation model INMAIM (0–130 km)
- The nature of 60-year oscillations of the Arctic climate according to the data of the INM RAS climate model
- Simulation of the modern climate using the INM-CM48 climate model
Artikel in diesem Heft
- Frontmatter
- Coupling the Earth system model INMCM with the biogeochemical flux model
- Design and development of the SLAV-INMIO-CICE coupled model for seasonal prediction and climate research
- Low frequency variability and sensitivity of the Atlantic meridional overturning circulation in selected IPCC climate models
- INM RAS coupled atmosphere–ionosphere general circulation model INMAIM (0–130 km)
- The nature of 60-year oscillations of the Arctic climate according to the data of the INM RAS climate model
- Simulation of the modern climate using the INM-CM48 climate model
