Anti-persistence in the global temperature anomaly field

Autor(es)

Carvalho, L. M. V. ; Tsonis, A. A. ; Jones, C. ; Rocha, H. R. ^[4] ; Polito, P. S.

• Tipo de documento: Artigo Científico
• Fonte: Nonlinear Processes in Geophysics; v. 14, n. 6, p. 723-733, Nov. 2007.
• Área do conhecimento: Ciências Exatas e da Terra - Geociências
• Assunto(s): Mudança climática Temperatura atmosférica

Resumo

In this study, low-frequency variations in temperature anomaly are investigated by mapping temperature anomaly records onto random walks. We show evidence that global overturns in trends of temperature anomalies occur on decadal time-scales as part of the natural variability of the climate system. Paleoclimatic summer records in Europe and New-Zealand provide further support for these findings as they indicate that anti-persistence of temperature anomalies on decadal time-scale have occurred in the last 226 yrs. Atmospheric processes in the subtropics and mid-latitudes of the SH and interactions with the Southern Oceans seem to play an important role to moderate global variations of temperature on decadal time-scales. (AU)

• Processo FAPESP: 02/09289-9 - Interação biosfera-atmosfera - Fase 2: cerrados e mudanças de uso da terra
• Beneficiário: Humberto Ribeiro da Rocha
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático