The Brazilian Earth System Model ocean-atmosphere (BESM-OA) version 2.5: evaluation of its CMIP5 historical simulation

Author(s)

Veiga, Sandro F. ^[1] ; Nobre, Paulo ^[2] ; Giarolla, Emanuel ^[3] ; Capistrano, Vinicius ^[4] ; Baptista, Jr., Manoel ^[2] ; Marquez, Andre L. ^[2] ; Figueroa, Silvio Nilo ^[2] ; Bonatti, Jose Paulo ^[2] ; Kubota, Paulo ^[2] ; Nobre, Carlos A. ^[5]

Affiliation

^[1] Natl Inst Space Res INPE, Earth Syst Sci Ctr CCST, BR-12227010 Sao Paulo - Brazil

^[2] Natl Inst Space Res INPE, Ctr Weather Forecasting & Climate Studies CPTEC, BR-12630000 Sao Paulo - Brazil

^[3] Natl Inst Space Res INPE, Ctr Weather Forecasting & Climate Studies CPTEC, BR-12227010 Sao Paulo - Brazil

^[4] Amazonas State Univ UEA, BR-69005010 Manaus, Amazonas - Brazil

^[5] Univ Sao Paulo, Inst Adv Studies, BR-05508050 Sao Paulo - Brazil

• Document type: Journal article
• Source: Geoscientific Model Development; v. 12, n. 4, p. 1613-1642, APR 24 2019.
• Web of Science Citations: 2

Abstract

The performance of the coupled ocean-atmosphere component of the Brazilian Earth System Model version 2.5 (BESM-OA2.5) was evaluated in simulating the historical period 1850-2005. After a climate model validation procedure in which the main atmospheric and oceanic variabilities were evaluated against observed and reanalysis datasets, the evaluation specifically focused on the mean climate state and the most important large-scale climate variability patterns simulated in the historical run, which was forced by the observed greenhouse gas concentration. The most significant upgrades in the model's components are also briefly presented here. BESM-OA2.5 could reproduce the most important large-scale variabilities, particularly over the Atlantic Ocean (e.g., the North Atlantic Oscillation, the Atlantic Meridional Mode, and the Atlantic Meridional Overturning Circulation), and the extratropical modes that occur in both hemispheres. The model's ability to simulate such large-scale variabilities supports its usefulness for seasonal climate prediction and in climate change studies. (AU)

• FAPESP's process: 18/06204-0 - Implementation of software infrastructure for the development of the BESM-Eta models in the supercomputer system available at INPE/CPTEC
• Grantee: Manoel Baptista da Silva Junior
• Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training
• FAPESP's process: 09/50528-6 - Brazilian model of the global climate system
• Grantee: Carlos Afonso Nobre
• Support Opportunities: Research Program on Global Climate Change - Thematic Grants
• FAPESP's process: 08/57719-9 - Program on Climate Change - INCT CLIMA
• Grantee: Carlos Afonso Nobre
• Support Opportunities: Research Program on Global Climate Change - Thematic Grants