L’empresa Science for Change amb seu a la ciutat de Barcelona obre una plaça d’incorporació immediata (ASAP) per contractar un científic especialitzat en l’atmosfera. Busquen un perfil entusiasta i proactiu, que hagi finalitzat els estudis de Doctorat i tingui experiència en l’aplicació dels principis físics de l’atmosfera, en models de dispersió i en la predicció de fenòmens atmosfèrics.
Com inscriure’s en el procés?
És molt fàcil, envia la teva carta de motivació juntament amb el teu currículum actualitzat (ambdós en anglès) a: ○ Nora Salas Seoane: nora.salas@scienceforchange.eu ○ Afegint en copia (CC) a la Isidora Jiménez: isadora.jimenez@scienceforchange.eu
Josep Cos, Francisco Doblas-Reyes, Martin Jury, Raül Marcos, Pierre-Antoine Bretonnière, and Margarida Samsó
Fig.2: Mediterranean region TAS (upper rows) and PR (lower rows) change differences with respect to the mean global temperature change and the mean 30–45∘ N latitudinal belt precipitation change respectively. The changes for the periods 2041–2060 (first and third row) and 2081–2100 (second and fourth row) are evaluated against the 1986–2005 mean. The differences are shown for the CMIP5 (left) and CMIP6 (right) DJF, JJA and annual mean projections (columns) under the high emission scenario RCP8.5 and SSP5-8.5 respectively. N indicates the number of models included in the ensemble mean.
Abstract: The enhanced warming trend and precipitation decline in the Mediterranean region make it a climate change hotspot. We compare projections of multiple Coupled Model Intercomparison Project Phase 5 (CMIP5) and Phase 6 (CMIP6) historical and future scenario simulations to quantify the impacts of the already changing climate in the region. In particular, we investigate changes in temperature and precipitation during the 21st century following scenarios RCP2.6, RCP4.5 and RCP8.5 for CMIP5 and SSP1-2.6, SSP2-4.5 and SSP5-8.5 from CMIP6, as well as for the HighResMIP high-resolution experiments. A model weighting scheme is applied to obtain constrained estimates of projected changes, which accounts for historical model performance and inter-independence in the multi-model ensembles, using an observational ensemble as reference. Results indicate a robust and significant warming over the Mediterranean region during the 21st century over all seasons, ensembles and experiments. The temperature changes vary between CMIPs, CMIP6 being the ensemble that projects a stronger warming. The Mediterranean amplified warming with respect to the global mean is mainly found during summer. The projected Mediterranean warming during the summer season can span from 1.83 to 8.49 ∘C in CMIP6 and 1.22 to 6.63 ∘C in CMIP5 considering three different scenarios and the 50 % of inter-model spread by the end of the century. Contrarily to temperature projections, precipitation changes show greater uncertainties and spatial heterogeneity. However, a robust and significant precipitation decline is projected over large parts of the region during summer by the end of the century and for the high emission scenario (−49 % to −16 % in CMIP6 and −47 % to −22 % in CMIP5). While there is less disagreement in projected precipitation than in temperature between CMIP5 and CMIP6, the latter shows larger precipitation declines in some regions. Results obtained from the model weighting scheme indicate larger warming trends in CMIP5 and a weaker warming trend in CMIP6, thereby reducing the difference between the multi-model ensemble means from 1.32 ∘C before weighting to 0.68 ∘C after weighting.
L’empresa RESPECT ENERGY S.A. busca ampliar el seu equip de meteorologia. És imprescindible tenir un bon nivell d’anglès i es valora positivament experiència en predicció meteorològica (des de tècniques de Nowcasting fins a models de predicció estacional).
Pels interessats, aquí teniu l’enllaç a la convocatòria:
The rigorous traffic limitations during COVID-19 have forced many people to work from home, reaching an outstanding degree of teleworking and reduction in air pollution. This exceptional situation can be examined as a large-scale pilot test to determine the potential of improving urban air quality through teleworking. Based on observed traffic reductions during the COVID-19 lockdown in Barcelona, we formulate socio-occupational scenarios, with various configurations of teleworking, and simulate them using the chemistry transport model WRF-Chem with multi-layer urban scheme. By intensifying teleworking to 2, 3, and 4 days a week, averaged NO2 concentrations are reduced by 4% (−1.5 μg m−3), 8% (−3 μg m−3), and 10% (−6 μg m−3), respectively, while O3 increases moderately (up to 3 μg m−3). We propose that teleworking be prioritized and promoted as an effective contribution towards reduction of long-term urban air pollution and short-term pollution peaks.
The GAMA group is filled with a deep sorrow for the catastrophic flood events recently occurred in central Europe. We share the idea that science has the power to change our environment and to save lives. That is the reason why, when events like this (as well as others of smaller or greater impact) take place, our team gets hands on into getting to learn as much as possible from them in order to contribute to improve the future.
Out of all lessons learnt from this last one we highlight two in this article:
The first one is that the event is consistent with the expected climate change impact on the intensity of the extreme weather events.
The second one being that we all need to be ready for an event like this. In order to do so, education, training and participation are crucial. We need to know how to act in the case of an emergency, where to find refuge, understand warnings, etc. This is a learning process that we all need to pursue, at all levels, from politicians, to managers, to citizens…
Projects such as FLOODUP (www.floodup.ub.edu) aim to provide citizens with relevant information as well as the opportunity to share their valuable local knowledge: vulnerable points, safe areas, good practices, or even information on the events that have historically affected their area.
We invite the readers to access this free information and to contribute to the project by clicking here: http://www.floodup.ub.edu/mapa-app/. Use the + symbol in the map to fill up the information:
The information that citizens share in the app in open to public and so it helps others get to know their surroundings better and so how to adapt to climate change. Furthermore, the info is also a very valuable source of information for us scientists that research these matters, providing a level of detail that can be otherwise impossible to get.
Aerial view of #Altenahr in Germany’s Rhineland-Palatinate State (From Nahel B. via WMO)
Joan Gilabert, Sergi Ventura, Alberto Martilli, Alba Badia, Carme Llasat, Jordi Sorberà and Gara Villalba
Abstract
The frequency and intensity of heat waves (HW) in cities are on the rise due to climate change as well as urban fabric materials and anthropogenic activities that affect heat accumulation. The efficacy of HW mitigation strategies depends on a city’s specific and unique morphology, land use, building materials, climate and geography. In this study, we show the effectiveness of cool roofs and vegetation in reducing temperature in the Metropolitan Area of Barcelona (AMB). We use the Weather and Research Forecasting (WRF) model with the urban scheme BEP+BEM, including11 urban classes to simulate a HW that occurred in August 2015. We find that cool roofs reduce temperature best during the day (0.67 °C average and 2.22 °C maximum reductions), while additional green areas moderate temperatures to a lesser degree but also more evenly during the day and at night (average reductions of 0.15 °C and 0.17 °C, respectively). However, when irrigation is increased, the temperature reduction during the day is intensified due to the cooling effect of more evapotranspiration. The thermal regulation of combining the two strategies is the most evenly distributed over the AMB and has the highest impact, with an average and maximum reduction of 1.26 °C and 4.73 °C at 13:00UTC.
E. Oliver, M.C. Llasat, M. Llasat-Botija, J. Díez-Palomar
Abstract
This study is based on an interdisciplinary collaboration between scientists from natural and social sciences to create scientific knowledge about how Twitter is valuable to understand the social impact of hydrometeorological events. The capacity of citizens’ reaction through Twitter to environmental issues is widely analyzed in the current scientific literature. Previous scientific works, for example, investigated the role of social media in preventing natural disasters. This study gives scientific evidence on the existence of diversity in the intentionality of Twitters’ messages related to hydrometeorological events. The methodological design is formed by four experiments implemented in different moments of a temporal axis. The social impact on social media methodology (SISM) is implemented as social media analytics. From the findings obtained, it can be observed that there are different forms of intentionality in Twitter’s messages related to hydrometeorological events depending on the contextual circumstances and on the characteristics of Twitter’s users’ profiles (including the geolocation when this information is available). This content is relevant for future works addressed to define social media communication strategies that can promote specific reactions in vulnerable groups in front the climate change
Keywords
Climate Change;
Social Impact;
Social Media;
Hydrometeorological Events;
Click here to access the full text in open access.
The ECCET unit offers two postdoc positions to contribute to the European climate risk assessment, based in Ispra, Italy.
The main objective of this project is to assess the impacts of climate change in and outside Europe (transboundary or spill-over effects) on the EU. The research underpins climate policy actions under the European Green Deal, EU Adaptation Strategy and Paris Climate Agreement. The analysis integrates JRC and international climate, biophysical and socioeconomic modelling to assess a wide range of impacts of climate change: on people, ecosystems, human assets and economic sectors.
For further details and how to apply please click here
The exiting new vacancy at the JRC in Ispra (Italy), is with the Disasters Risk Management Unit of the Space, Security and Migration Directorate.
The position is for a FG IV scientific project officer to perform research and development, as well as knowledge management, on flood risk vulnerability in the context of EU disaster risk reduction and climate change adaptation policies.
Initial aim: to create a unique, independent record of flood impact and losses at European and global level.
Find further details visiting the post in Research Gate.
RIESGOS NATURALES 