Dominance of grain size impacts on seasonal snow albedo at deforested sites in New Hampshire

Snow cover serves as a major control on the surface energy budget in temperate regions due to its high reflectivity compared to underlying surfaces. Winter in the northeastern United States has changed over the last several decades, resulting in shallower snowpacks, fewer days of snow cover, and increasing precipitation falling as rain in the winter. As these climatic changes occur, it is imperative that we understand current controls on the evolution of seasonal snow albedo in the region. Over three winter seasons between 2013 and 2015, snow characterization measurements were made at three open sites across New Hampshire. These near-daily measurements include spectral albedo, snow optical grain size determined through contact spectroscopy, snow depth, snow density, black carbon content, local meteorological parameters, and analysis of storm trajectories using the Hybrid Single-Particle Lagrangian Integrated Trajectory model. Using analysis of variance, we determine that land-based winter storms result in marginally higher albedo than coastal storms or storms from the Atlantic Ocean. Through multiple regression analysis, we determine that snow grain size is significantly more important in albedo reduction than black carbon content or snow density. And finally, we present a parameterization of albedo based on days since snowfall and temperature that accounts for 52% of variance in albedo over all three sites and years. Our improved understanding of current controls on snow albedo in the region will allow for better assessment of potential response of seasonal snow albedo and snow cover to changing climate

Research information management at ISCTE-IUL: the library’s role

ISCTE-IUL is a Portuguese public university with approximately 9000 students enrolled in undergraduate (46%) and postgraduate (54%) programs. The Repository of ISCTE-IUL is running since 2007 sustained by an Open Access Policy approved in the same year. In 2013, the current research information system – Ciência-IUL – became interoperable with the Repository bringing new challenges to SID, and allowing work collaboratively with other services to collect information, improve processes, and reduce duplication of efforts. SID seeks to support researchers throughout the research life cycle aiming to raise awareness of the academic community for Open Science best practices.info:eu-repo/semantics/publishedVersio

Avaliação de repositórios institucionais : análise comparativa

Só está disponível o resumo.Esta comunicação tem como objetivo apresentar os resultados da monitorização de três repositórios institucionais de instituições do ensino superior, politécnico e universitário, numa perspetiva comparativa

La gestión directiva y su impacto en la calidad educativa: reflexiones a partir de la recuperación de una intervención en un centro educativo de la ZMG

Trabajo que expone el proyecto de intervención realizado en una escuela de Guadalajara que tuvo el objetivo de elevar la calidad educativa. En el diagnóstico que se realizó, se encontró que existía un grave problema de disciplina y respeto entre la comunidad escolar, por lo que se definió que era necesario crear un ambiente propicio para que se lograra en los alumnos un aprendizaje significativo. De igual forma, se planteó como objetivo implementar el trabajo colegiado entre los docentes y generar materiales de apoyo para propiciar el aprendizaje en los alumnos