Horizontal profiles of longwave and shortwave radiation components over sea ice near Barrow, Alaska during the 2011 melt

An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.

Retratos e imagen de escritor de Ramón del Valle Inclán en la prensa porteña, (1899-1910)

En 1899 Rubén Darío publicó en La Nación el retrato de un escritor casi desconocido en la Argentina: Ramón del Valle Inclán. En 1910, durante su visita a la Argentina, Valle Inclán dictó varias conferencias sobre literatura y arte, que sólo han quedado registradas en extensas crónicas en La Nación y La Prensa. Se analizarán algunos retratos de Valle Inclán aparecidos en la prensa porteña durante el período 1899-1910, así como también, la imagen de escritor construida en una de sus conferencias, con el objetivo de vislumbrar cómo los retratos y su imagen de escritor se influían mutuamente

Astier en los toldos : Canio Llanquinao, Margarita y Pozo Menares, Gabriel (2013): Historia y conocimiento oral mapuche. Sobrevivientes de la "Campaña del desierto" y "Ocupación de la Araucanía" (1899-1926). Santiago de Chile, Lom Ediciones, pp. 730

Fil: Rogers, Geraldine. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Astier en los toldos : Canio Llanquinao, Margarita y Pozo Menares, Gabriel (2013): Historia y conocimiento oral mapuche. Sobrevivientes de la "Campaña del desierto" y "Ocupación de la Araucanía" (1899-1926). Santiago de Chile, Lom Ediciones, pp. 730

Fil: Rogers, Geraldine. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.