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El clima futuro de África: abrirse camino entre los fenómenos extremos a través de la innovación y las alertas tempranas
No full textLong-term homogenized air temperature and precipitation datasets in Romania, 1901–2023
No full textIn this study, we present RoClimHom, the first long-term homogenized dataset of daily air temperature and precipitation measurements for Romania, comprising mean (Tavg), maximum (Tmax), and minimum (Tmin) temperatures at 2 m height (T2m) and precipitation (PREC) from 156 weather stations spanning the 1901–2023 period. This work addresses the historical inconsistencies caused by changes in measurement techniques, station relocations, and operational practices. The homogenization methodology involved multiple stages, including data preprocessing, quality control, and breakpoint detection, resulting in a robust dataset that eliminates non-climatic biases. RoClimHom overcomes the potential biases in air temperature and precipitation measurements induced by changes in location, procedures, instruments, or personnel of the weather stations, which commonly influence natural climate variability. The new homogenized and gap-free climate dataset serves as an essential resource for academia and policymakers, facilitating climate change assessment and supporting a wide range of climate applications
High temporal variability not trend dominates Mediterranean precipitation
Full text linkState-of-the-art climate models project a substantial decline in precipitation for the Mediterranean region in the future . Supporting this notion, several studies based on observed precipitation data spanning recent decades have suggested a decrease in Mediterranean precipitation , with some attributing a large fraction of this change to anthropogenic infuences. Conversely, certain researchers have underlined that Mediterranean precipitation exhibits considerable spatiotemporal variability driven by atmospheric circulation patterns maintaining stationarity over the long term. These conficting perspectives underscore the need for a comprehensive assessment of precipitation changes in this region, given the profound social, economic and environmental implications. Here we show that Mediterranean precipitation has largely remained stationary from 1871 to 2020, albeit with signifcant multi-decadal and interannual variability. This conclusion is based on the most comprehensive dataset available for the region, encompassing over 23,000 stations across 27 countries. While trends can be identifed for some periods and subregions, our fndings attribute these trends primarily to atmospheric dynamics, which would be mostly linked to internal variability. Furthermore, our assessment reconciles the observed precipitation trends with Coupled Model Intercomparison Project Phase 6 model simulations, neither of which indicate a prevailing past precipitation trend in the region. The implications of our results extend to environmental, agricultural and water resources planning in one of the world’s prominent climate change hotspots
Resolución de 12 de febrero de 2025, de la Agencia Estatal de Meteorología, por la que se publica el Convenio con la Universidad de Santiago de Compostela, para la realización de prácticas académicas externas de estudiantes
Full text linkInvestigating the applicability of modern widely tunable lasers to laser heterodyne radiometry for atmospheric composition monitoring
Full text linkGreenhouse gas emissions are widely recognized by the scientific community as the main cause of climate change. This has led to an enormous increase in interest in techniques for studying atmospheric composition over the last few decades. Laser Heterodyne Radiometry (LHR) systems represent one of the most promising alternatives for such studies, given their inherent characteristics, which have led to an enormous progress in the last decades. Although these systems offer a wide range of advantages, the optical span is limited by the tuning range of the local oscillator laser, usually using Distributed Feedback Lasers (DFBs), which limits the span to a few absorption lines. This has a negative impact on the performance of atmospheric gas concentration retrieval compared to the multitude of absorption lines retrieved by traditional Fourier Transform spectroscopy systems. In this context, the use of widely tunable lasers represents an optimal approach to greatly expand the range of LHR systems in a straightforward manner. This paper presents the first comprehensive study of the applicability of state-of-the-art widely tunable lasers to LHR systems in a direct comparison of their performance, in all aspects of interest, with DFBs. The conclusions of this work prove that, although there are still a number of challenges to be addressed before widespread use, these sources demonstrate enormous potential and remarkable advantages.This research has been financed by the Agencia Estatal de Investigación (Spain) under Grant Project TED2021-131695B-100
Corpora Newsletter. N. 11 (mayo 2025)
No full textBoletín bimestral para la comunicación corporativa de AEMET
Balance hídrico nacional. Número 11/2025
No full textBalance hídrico correspondiente al 20 de abril de 2025
