La organización de los juegos olímpicos como elemento de configuración de regímenes urbanos: Barcelona 1992 como estudio de caso

The games were an opportunity for Spain to show to the world as a modern, wealthy and democratic country of Western Europe, that successfully accomplished 15 years of political transition and dealt with identity issues. But the games also were a window of opportunity for the complete “reinvention” of Barcelona at all levels (political, economical, social and urbanistic) and laid the foundations for the development of the city in the next decades. This research argues that this process of “reinvention of the city” can be explained for three factors: 1) A policy coalition involving key economic and social actors under the leadership of Barcelona‟s Major, which led to a new urban regime. 2) An intergovernmental game that privileged the cooperation between the federal and urban government, as well as the international sports institutions 3) An understanding of the Olympic infrastructures not only as a guarantee for the success of the event, but as the starting point for a new model of urban and identity development regarding to the XXI siècle. The main objective of the research is to analyze the possible application of urban regime approach to different local government systems of the US by analyzing a case study, Barcelona...

A Review of ENSO Influence on the North Atlantic. A Non-Stationary Signal

The atmospheric seasonal cycle of the North Atlantic region is dominated by meridional movements of the circulation systems: from the tropics, where the West African Monsoon and extreme tropical weather events take place, to the extratropics, where the circulation is dominated by seasonal changes in the jetstream and extratropical cyclones. Climate variability over the North Atlantic is controlled by various mechanisms. Atmospheric internal variability plays a crucial role in the mid-latitudes. However, El Niño-Southern Oscillation (ENSO) is still the main source of predictability in this region situated far away from the Pacific. Although the ENSO influence over tropical and extra-tropical areas is related to different physical mechanisms, in both regions this teleconnection seems to be non-stationary in time and modulated by multidecadal changes of the mean flow. Nowadays, long observational records (greater than 100 years) and modeling projects (e.g., CMIP) permit detecting non-stationarities in the influence of ENSO over the Atlantic basin, and further analyzing its potential mechanisms. The present article reviews the ENSO influence over the Atlantic region, paying special attention to the stability of this teleconnection over time and the possible modulators. Evidence is given that the ENSO–Atlantic teleconnection is weak over the North Atlantic. In this regard, the multidecadal ocean variability seems to modulate the presence of teleconnections, which can lead to important impacts of ENSO and to open windows of opportunity for seasonal predictability.