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[EN] The current study focuses on Spanish undergraduate students enrolled in Meteorology-related subjects that would make use of weather forecasts in their future professional careers. The main aim of this study is twofold. Firstly, to evaluate the students’ confidence in the current weather forecasts. Secondly, to analyze the students’ perception and understanding of uncertainty associated with weather-related forecasts. To address these issues, a Google Form questionnaire was developed. A total of 101 students participated in the corresponding survey during the academic year 2018-2019. Results show that students have a well-founded opinion and a fairly solid knowledge of weather forecasts, both regarding confidence and in relation to the trend found in the current weather forecasts towards less accurate predictions for larger lead times. The results found in the current study are in line with previous research conducted in different specific contexts and should be taken into account to implement different learning strategies in the classroom., This work has been funded by the Assistance Programmes of the University of Alicante ‘‘Programa de Redes-I3CE de calidad, innovación e investigación en docencia universitaria. Convocatoria 2018-19. Alicante: Instituto de Ciencias de la Educación (ICE) de la Universidad de Alicante. Ref: [4334].’’, “Programa de Redes-I3CE de calidad, innovación e investigación en docencia universitaria. Convocatoria 2019-20. Alicante: Instituto de Ciencias de la Educación (ICE) de la Universidad de Alicante. Ref: [4669]”, and ‘‘Programa de Redes-I3CE de calidad, innovación e investigación en docencia universitaria. Convocatoria 2020-21. Alicante: Instituto de Ciencias de la Educación (ICE) de la Universidad de Alicante. Ref: [5150].’’

La calibración de sensores a bordo de satélite requiere medidas espectrales de campo simultáneas al paso del satélite. El objetivo de este trabajo es determinar y validar el protocolo óptimo para medir en el campo espectros de reflectividad (del visible al infrarrojo cercano) y emisividad (en el infrarrojo térmico) de muestras con características espectrales singulares (calcita, cuarzo, yeso y sal). Los espectrorradiómetros analizados son el Ocean Optics USB2000+ (200-1100 nm) y el

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Canopy temperature is a key factor in many studies, such as evapotranspiration and heat fluxes estimation. To retrieve it accurately, it is needed a precise characterization of the emissivity in the thermal infrared spectral range. Several parametric models are proposed to retrieved effective emissivity at different observation angles, from the previous knowledge of the vegetation and soil emissivities. The present work compares some of these models with emissivity measurements obtained with Temperature-Emissivity Separation (TES) method. For that, FR97, Mod3 and Rmod3 parametric models have been compared with radiometric measurements. Emissivity measurements were done for 7 different observation angles, from 0o to 60o in steps of 10o, and were repeated for six values of leaf area index (LAI) varying from 0.5 m2/m2 to 2.8 m2/m2.For high LAI values (more than 1.5 m2/m2), differences between TES and models emissivities are from +0.011 to −0.009, being positive for the FR97 model and negative for the Mod3 and Rmod3 models. Very little variation in emissivity is shown at high observation angles in all models at high LAIs. The measured emissivities are shown constant against observation angles, without any decreasing for high angles.For low LAI values (less than 1.5 m2/m2), these differences vary from −0.002 to −0.024. In this case, the FR97 model values show a good agreement with the TES emissivity measurements.Therefore, for high LAI values, the TES emissivity measurements are closer to those of the Mod3 and Rmod3 models. However, the TES emissivity measurements are closer to those given by the FR97 model at lower LAI values.