Search results for "Climate"
showing 10 items of 4934 documents
Short-period volcanic gas precursors to phreatic eruptions: Insights from Poás Volcano, Costa Rica
2016
Texto completo del documento Volcanic eruptions involving interaction with water are amongst the most violent and unpredictable geologic phenomena on Earth. Phreatic eruptions are exceptionally difficult to forecast by traditional geophysical techniques. Here we report on short-term precursory variations in gas emissions related to phreatic blasts at Poás volcano, Costa Rica, as measured with an in situ multiple gas analyzer that was deployed at the edge of the erupting lake. Gas emitted from this hyper-acid crater lake approaches magmatic values of SO2/CO21–6 days prior to eruption. The SO2flux derived from magmatic degassing through the lake is measureable by differential optical absorpti…
The study of climate change in Primary Education: an exploration from Social Science textbooks in the Valencian Community
2020
El cambio climático constituye uno de los principales desafíos socio-ambientales del actual siglo XXI. El objetivo de esta investigación es analizar los contenidos sobre el cambio climático que proponen los manuales escolares de Educación Primaria de Ciencias Sociales (3er ciclo) en la Comunidad Valenciana (España) atendiendo a: 1) la explicación del fenómeno (causas y consecuencias); y 2) la descripción de los principales gases de efecto invernadero. Los resultados indican que actualmente estos recursos proyectan una imagen excesivamente catastrófica sobre el cambio climático, especialmente por las consecuencias que se aluden (incremento de los fenómenos extremos atmosféricos) y citando co…
Climatic change and thermal comfort. Effects on the tourism industry in the region of Valencia
2020
El cambio climático comienza a manifestar efectos en las actividades económicas de la Comunidad Valenciana. El turismo es una parte fundamental de su economía, puesto que representa el 15% de su PIB regional. La modalidad de “sol y playa” es la principal actividad turística en el territorio valenciano, de ahí la importancia del análisis de las alteraciones que están experimentando los elementos climáticos debido a su efecto en el recurso turístico y en las preferencias de la demanda. La pérdida del “confort climático”, el aumento de las noches “tropicales” (Tª > 20ºC), el incremento de la temperatura del agua de mar Mediterráneo y la adaptación a los extremos atmosféricos (olas de calor, ll…
The impact of foreign trade on the Netherlands' real CO2 emissions
2019
Aim: CO2 emissions and the related climate change are a global problem, where the direct impact of actions of individual countries depends on their total share in CO2 emissions. In order to assess the potential for policy measures, the openness of an economy, and the related import and export and their impacts on emissions should be considered. The aim of this paper is the attempt to show the real CO2 emissions of the Netherlands as well as the impact of its trade on CO2 emissions in other countries in the world and in the EU in 2015.Design / Research methods: This study was conducted on the group of countries that are the major emitters of CO2 in the world including most of the EU members.…
Are Future School Teachers Qualified to Teach Flood Risk? An Approach from the Geography Discipline in the Context of Climate Change
2021
The aims of this research, based on a case study (trainee teachers of Primary degree and Secondary Education–MAES of the University of Valencia, Spain), are to analyse the students’ memories and perceptions of their training about floods
Benchmarking plant diversity of Palaearctic grasslands and other open habitats
2021
© 2021 The Authors.
First Retrievals of ASCAT-IB VOD (Vegetation Optical Depth) at Global Scale
2021
Global and long-term vegetation optical depth (VOD) dataset are very useful to monitor the dynamics of the vegetation features, climate and environmental changes. In this study, the radar-based global ASCAT (Advanced SCATterometer) IB (INRAE-BORDEAUX) VOD was retrieved using a model which was recently calibrated over Africa. In order to assess the performance of IB VOD, the Saatchi biomass and three other VOD datasets (ASCAT V16, AMSR2 LPRM V5 and VODCA LPRM V6) derived from C-band observations were used in the comparison. The preliminary results show that IB VOD has a promising ability to predict biomass $(\mathrm{R}=0.74,\ \text{RMSE} =44.82\ \text{Mg}\ \text{ha}^{-1})$ , which is better …
The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrome…
2019
Metals form an essential part of the Universe at all scales. Without metals we would not exist, and the Cosmos would look completely different. Metals are primarily born through nuclear processes in stars. They leave their cradles through winds or explosions, and then start their journey through space. This can lead them in and out of astronomical objects on all scales, ranging from comets, planets, stars, entire galaxies, groups and clusters of galaxies to the largest structures of the Universe. Their wanderings are fundamental in determining how these objects, and the entire universe, evolve. In addition, their bare presence can be used to trace what these structures look like. The scope …
Regionalizing rainfall at very high resolution over la Réunion island using a regional climate model.
2014
Abstract Regional climate models (RCMs) should be evaluated with respect to their ability to downscale large-scale climate information to the local scales, which are sometimes strongly modulated by surface conditions. This is the case for La Réunion (southwest Indian Ocean) because of its island context and its complex topography. Large-scale atmospheric configurations such as tropical cyclones (TCs) may have an amplifying effect on local rainfall patterns that only a very high-resolution RCM, forced by the large scales and resolving finescale processes, may simulate properly. This paper documents the capability of the Weather Research and Forecasting Model (WRF) RCM to regionalize rainfall…
Lead concentrations in feathers and blood of common blackbirds (Turdus merula) and in earthworms inhabiting unpolluted and moderately polluted urban …
2006
9 pages; International audience; Despite the dramatic decrease of atmospheric lead (Pb) concentrations in urban areas of most industrialised countries, we hypothesised that urban common blackbirds (Turdus merula) may still be contaminated by Pb concentrations of toxicological concern due to transfer from soil through the food chain. We sampled blackbirds and earthworms, one of their main preys, in Besan?, a middle-size city of Eastern France (where atmospheric Pb concentrations decreased from 0.5 microg/m(3) in 1987 to nearly 0 in 2002) and in a rural reference site. Lead concentrations were determined in the tissues of the different functional groups of earthworms (anecic, epigeous and end…