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.

Lo fotográfico en la narrativa contemporánea de lengua francesa: P. Modiano, A. Makine y A. Ernaux

The goal of this study is to define the photographic dimension as a transversal notion that accompanies texts and carries out a function that is narrative, discursive and even poetic, and as an unambiguous analytical tool that allows an understanding of the function of the photographic image in contemporary fiction. How does the photographic dimension act within a text of fiction? How does it guide it, define it, and eventually, transform it? How is the space-time element of a text influenced when the photographic dimension affects the heart of the story? How does the status of the photographic image change when it is blended with the fictional text, and how is a text reorganized in light of the photographic dimension? What interpretations are made possible by the analysis of the photographic dimension? Is it possible to narrate and read a photograph without having to see it, or to what extent does a photograph in plain view determine the writing and reading of the story? In short: What writing and reading digressions are caused by the presence of photographs within a literary text; what is their role, for example, in the activation of memory, of a dream-like state or of identity, and what symbolic dimension is introduced?...