On the spatiotemporal variability of the temperature anomaly field

Author(s)

Carvalho, Leila M. V. ; Tsonis, Anastasios A. ; Jones, Charles ; Tsonis, A ; Elsner, JB

• Document type: Journal article
• Source: NONLINEAR DYNAMICS IN GEOSCIENCES; v. N/A, p. 4-pg., 2007-01-01.

Abstract

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 NewZealand provide further support for these findings as they indicate that anti-persistence of temperature anomalies on decadal time-scale have occurred in the last 256 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)

• FAPESP's process: 02/09289-9 - Biosphere-atmosphere interaction - Phase 2: cerrados and land use changes
• Grantee: Humberto Ribeiro da Rocha
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants