
%0 Journal Article
%A Minetti, J.L. 
%A Vargas, W.M. 
%A Poblete, A.G. 
%A Mendoza, E.A. 
%T Latitudinal positioning of the subtropical anticyclone along the Chilean coast
%J Australian Meteorological and Oceanographic Journal
%D 2009/04/01
%V 58
%N 2
%P 107-117
%K 
%R https://doi.org/10.1071/ES09012
%U https://www.publish.csiro.au/paper/ES09012 
%X In the past various authors have investigated climatic change (CC) by using the latitude of the subtropical ridge in the mean sea-level pressure (MSLP) for a range of geographic regions. In this paper the index L is defined as the latitudinal position of the subtropical anticyclone along the Chilean coast. This L index on the South American coast of the South Pacific is analysed using an instrumental record, covering the 1901-2004 period. An objective methodology is proposed for estimating L, and the physical consistency is assessed with the SOI and pressure at sea level in Valdivia, Chile. The analysis of a shorter period is compared with other authors&#x2019; results. The L variable can be useful in CC studies or in the analysis of low-frequency fluctuations in climate variability, and it is analysed as a dependent and independent time series. L was displaced towards the south over the last century but not to a statistically significant extent. Natural fluctuations of 50 years and another, shorter, of 16-22 years were also observed. In this paper, the greatest persistence and distant associations between anomalies of monthly L are shown; these associations can be useful for climate forecasting. 
