EL BLOG DE GAMA

GAMA (Grupo de Análisis de situaciones Meteorológicas Adversas) es un grupo de investigación interdisciplinario del Departament de Física Aplicada de la Universitat de Barcelona. Sus principales lineas de investigación son: el estudio de fenómenos meteorológicos adversos y riesgos naturales (episodios de precipitaciones extremas, inundaciones, riadas, tormentas, sequías, incendios forestales,…); Cambio climático (análisis de series meteorológicas, tendencias y anomalías, impacto del cambio climático en los riesgos naturales); Previsión hidrometeorológica (nowcasting, estacional); Análisis del impacto social, percepción y comunicación social de los riesgos naturales.

Con el fin de poder difundir información relacionada con las líneas de estudio, nos hemos propuesto empezar un blog con el título de Riesgos Naturales, un espacio de divulgación meteorológica, así como de comunicación y sensibilización frente a los riesgos naturales y el cambio climático.

New publication of team GAMA and SMC. “Convective precipitation trends in the Spanish Mediterranean region”

M.C. Llasat, A. del Moral, M. Cortès and T. Rigo

Abstract

This paper aims to analyse the distribution and temporal evolution of convective precipitation in the Mediterranean region of Spain. To accomplish this goal, we used 148 sets of 5-min rainfall rate data from the 1989–2015 period. The selected regions were the Júcar Hydrographic Confederation (CHJ) and the Internal Basins of Catalonia (CIC), which cover most of the autonomous communities of Catalonia and the Valencian Community (east Spain). The average 5-min intensity threshold of 35 mm/h and the β parameter, defined as the ratio between convective precipitation versus total precipitation in any period, were used to characterise convective precipitation. Convective episodes were categorised as “very convective”, “moderately convective”, and “slightly convective” based on the β value. After quality control, the series of 129 stations were clustered into homogeneous precipitation zones that also include β as one of the variables of characterisation.

The results show that convective precipitation can contribute to total annual precipitation by up to 16% on average, but it is generated by a very small percentage of convective events (between 3% and 6% across all the stations) in comparison with the total number of rainfall episodes. In this sense, moderately convective events are the most common, with a predominantly unimodal monthly distribution of β, with summer the most convective season. Trends show a significant increase in precipitation, convective precipitation, and convective episodes in the CHJ. On the other hand, a positive trend of convective events is predominant in the CIC region, despite an overall precipitation decrease in the analysed period. These results are relevant given that extreme daily rainfall does not show a positive or significant trend, and they are in line with the impact of climate change on increased atmospheric instability and water vapour in the atmosphere. They highlight the need to work with sub-daily precipitation series in the case of the Mediterranean, which is mainly affected by flash floods.

Keywords

  • Convective precipitation;
  • Heavy rainfalls;
  • Flash floods;
  • Climate change;
  • Mediterranean region;

Click here to access the full text.

Call for applications: NatRiskChange now offers 12 new PhD positions

Responsibilities and requirements depend on the PhD-project and are outlined on the website http://www.uni- potsdam.de/en/natriskchange/index/job-opportunities.html. Candidates can apply for up to three projects and shall explain their motivation for choosing them. The PhD-posts are part-time (75%), fixed-term employment contracts for 3 years. The salary scale is TV-L E13. Employment in all positions shall begin on 1st October 2021.

Applications should include the following components:

CV, letter of motivation, research interests (specific interests and research plan for PhD-project), a record of studies, master and bachelor certificates including a transcript of records, two letters of recommendation as well as an English language certificate. Applications can only be submitted in one single PDF-file through https://www.geo-x.net/natriskchange/.

Deadline for applications is 15th May 2021.

H2020 MSCA-ITN funded Ph.D. fellow position in Torino, Italy.

The position is part of the CriticalEarth project – a Horizon 2020 Marie Skłodowska-Curie Actions, Innovative Training Network (ITN). 
Deadline for applications is April 15th, 2021!
A full description can be found at https://euraxess.ec.europa.eu/jobs/600713.
Please write to recruitment.ce@polito.it for any inquiry on this position.

Oferta de Empleo Público en AEMET: Cuerpo de Observadores de Meteorología del Estado (C1)

Oferta de Empleo Público en AEMET. Cuerpo de Diplomados en Meteorología del Estado (A2)

Oferta Empleo Público en AEMET: Cuerpo Superior de Meteorólogos del Estado (A1)

La Agencia Estatal de Meteorología lanz

Accede a la Página web para más información: https://www.aemet.es/es/empleo_y_becas/empleo_publico/%20oposiciones/grupo_a1/acceso_libre

Carmen Llasat para la Fundació Lluís Espinal. “Cambio Climático. ¿Qué nos dice la ciencia?”

No te pierdas la entrevista a Carme Llasat del Grupo GAMA, catedrática de Física de la Atmósfera en el Departamento de Física Aplicada de la UB y miembro del Grupo de Ética y Sostenibilidad de Cristianisme i JustíciaFundació Lluís Espinal.

8 minutos que no tienen desperdicio te esperan aquí:

https://www.youtube.com/watch?v=yV-7xM0Q5GQ&feature=youtu.be

Funded PhD Opportunity – UNSEEN, most extreme, severe convective storms. UK

Extreme wind, flooding, hail, lightning together, combined and compounding! How might the risk posed by severe convective storms (SCS) become worse?

Funded PhD opportunity, jointly supervised by Loughborough University (UK) and the UK Met Office that will apply cutting-edge science to a fascinating topic.

Project highlights
  • First identification of risk hotspots for this catastrophic compound hazard
  • Innovative mix of methods to quantify evolving risk in a warming climate
  • Results of immediate interest to broad spectrum of society (from climate scientists to decision makers)

Link: https://centa.ac.uk/studentship/unseen-most-extreme-severe-convective-storms/

Deadline for Applications: 11th January

Postdoctoral fellowship in polar ocean modelling available. Belgium

The Georges Lemaître Centre for Earth and Climate Research (TECLIM; www.uclouvain.be/teclim) / Earth and Life Institute of the Université catholique de Louvain (UCLouvain), Louvain-la-Neuve, Belgium is seeking a postdoctoral fellow for participation to the JPI Climate & Oceans project MEDLEY (MixED Layer hEterogeneitY) coordinated by the Laboratoire d’Océanographie Physique et Spatiale, Brest, France. The overall objective of this project is to evaluate the spatial heterogeneity of the ocean mixed layer dynamics and improve its representation in global climate models.

The successful candidate will contribute to (1) diagnose the spatial heterogeneity of the mixed layer dynamics in ice-covered regions in models of different resolutions, (2) assess the impact of fragmented sea ice on air-sea fluxes in those models and (3) analyze the role of ice-ocean feedbacks in controlling the spatial heterogeneity of the mixed layer depth. He/she will also contribute to improve and test parameterizations of the spatial heterogeneity of the mixed layer dynamics in the NEMO (Nucleus for European Modelling of the Ocean; www.nemo-ocean.eu) model at a resolution similar to the one used in global climate models, with focus on polar oceans

Applicants should send before January 15, 2021 (i) a statement of research experience, qualification and interest, (ii) a complete CV including a list of publications, and (iii) two letters of recommendation via e-mail to Prof. Thierry Fichefet (thierry.fichefet@uclouvain.be).

Two postdoc positions at Joint Research Centre on Climate Risk Assessment for Europe. Italy

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

Deadline: 16/1/2021 23:59 Brussels time

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