Impacts of teleconnection patterns on South America climate

Author(s)

Reboita, Michelle Simoes ^[1] ; Ambrizzi, Tercio ^[2] ; Crespo, Natalia Machado ^[2] ; Dutra, Livia Marcia Mosso ^[2] ; Ferreira, Glauber Willian de S. ^[1] ; Rehbein, Amanda ^[2] ; Drumond, Anita ^[3] ; da Rocha, Rosmeri Porfirio ^[2] ; Souza, Christie Andre de ^[1]

Affiliation

^[1] Univ Fed Itajuba, Inst Recursos Nat, Av BPS, 1303, BR-37500903 Itajuba, MG - Brazil

^[2] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Ciencias Atmosfer, Sao Paulo, SP - Brazil

^[3] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP - Brazil

• Document type: Journal article
• Source: Annals of the New York Academy of Sciences; v. 1504, n. 1, SI, p. 116-153, NOV 2021.
• Web of Science Citations: 2

Abstract

Oceanic heat sources disturb the atmosphere, which, to come back to its initial state, disperses waves. These waves affect the climate in remote regions, characterizing the teleconnection patterns. In this study, we describe eight teleconnection patterns that affect South America climate: the El Nino-Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO), the Atlantic Multidecadal Oscillation (AMO), the Tropical Atlantic Dipole (TAD), the South Atlantic Dipole (SAD), the Southern Annular Mode (SAM), the Madden-Julian Oscillation (MJO), and the Indian Ocean Dipole (IOD). Precipitation and winds at 850-hPa anomalies, considering these teleconnection patterns in ENSO neutral periods, are also presented. Overall, southeastern South America and the north sector of the North and Northeast regions of Brazil are the most affected areas by the teleconnection patterns. In general, there is a precipitation dipole pattern between these regions during each teleconnection pattern. (AU)

• FAPESP's process: 16/10557-0 - Mesoscale convective systems over the Amazon basin: present climate and future climate change scenarios
• Grantee: Amanda Rehbein
• Support Opportunities: Scholarships in Brazil - Doctorate