Scientist (Evaluation and Uncertainty Quantification)
Forecast, Evaluation, Forecast Verification and Observation Monitoring
Summary:
Llorenç is currently working in the DestinE program, in particular developing and applying verification techniques suitable for km-scale global forecasts.
He has broad experience in the development of weather and climate services for the energy sector, both in the private sector and in academia.
Professional interests:
- Numerical weather prediction
- Climate prediction
- Forecast verification
- Statistical post-processing and machine learning
- Climate services
- Teleconnections
- Renewable energy
- Wind
Career background:
Education
- PhD in Physics (2020), Universitat de Barcelona & Barcelona Supercomputing Center: "Climate variability predictions for the wind energy industry: a climate services perspective", advisors: Francisco Doblas-Reyes and Albert Soret.
- MSc in Meteorology (2007), Universitat de Barcelona.
- BSc in Mathematics (2005), Universitat de Barcelona, Excellence programme.
Professional experience
- From 2022 - Scientist, Evaluation and uncertainty quantification.
- 2022 Adjunct lecturer in Statistics, Universitat de Girona.
- 2020–2022 Postdoc researcher, Barcelona Supercomputing Center, Earth Sciences department.
- 2016–2020 - Researcher, Barcelona Supercomputing Center, Earth Sciences department.
- 2012–2016 - Team lead forecasting operations and research, AWS Truepower SLU.
- 2008–2012 - Wind resource assessment technician, Meteosim Truewind SL.
- 2006–2007 - Numerical Weather Prediction technician, Meteosim SL.
- 2006 - Assistant researcher, Fundació Bosch i Gimpera.
External recognitions
- 2012 - AWS TruePower Innovation Award
- 2022 - 2nd place in the WMO S2S-AI challenge to improve sub-seasonal predictions of temperature and precipitation with machine learning
- 2025
- (February 2025) The Tall Tower Dataset. DOI: 10.23728/B2SHARE.136ECDEEE31A45A7906A773095656DDB
- Katherine Grayson, Stephan Thober, Aleksander Lacima-Nadolnik, Ehsan Sharifi, Llorenç Lledó, Francisco Doblas-Reyes (February 2025) Statistical summaries for streamed data from climate simulations: One-pass algorithms (v0.6.2). DOI: 10.5194/egusphere-2025-28
- 2024
- Llorenç Lledó, Gregor Skok, Thomas Haiden (August 2024) Quantifying double-penalty effects and mitigating their impact on forecast verification. DOI: 10.5194/ems2024-50
- Llorenç Lledó, Thomas Haiden, Matthieu Chevallier (November 2024) An intercomparison of four gridded precipitation products over Europe using an extension of the three-cornered-hat method, Hydrology and Earth System Sciences. DOI: 10.5194/hess-28-5149-2024
- Llorenç Lledó, Thomas Haiden, Matthieu Chevallier (March 2024) An intercomparison of four gridded precipitation products over Europe using the three-cornered-hat method. DOI: 10.5194/egusphere-2024-807
- 2023
- Llorenç Lledó, Thomas Haiden, Josef Schröttle, Richard Forbes (February 2023) Scale-dependent verification of precipitation and cloudiness at ECMWF, ECMWF. DOI: 10.21957/c92loli749
- Llorenç Lledó, Gregor Skok, Thomas Haiden (July 2023) Estimating location errors in precipitation forecasts with the Wasserstein and Attribution distances. DOI: 10.5194/ems2023-602
- 2022
- Núria Pérez-Zanón, Louis-Philippe Caron, Silvia Terzago, Bert Van Schaeybroeck, Llorenç Lledó, Nicolau Manubens, Emmanuel Roulin, M. Carmen Alvarez-Castro, Lauriane Batté, Pierre-Antoine Bretonnière, Susana Corti, Carlos Delgado-Torres, Marta Domínguez, Federico Fabiano, Ignazio Giuntoli, Jost von Hardenberg, Eroteida Sánchez-García, Verónica Torralba, Deborah Verfaillie (August 2022) Climate Services Toolbox (CSTools) v4.0: from climate forecasts to climate forecast information, Geoscientific Model Development. DOI: 10.5194/gmd-15-6115-2022
- Nina Schuhen, Nathalie Schaller, Hannah C. Bloomfield, David J. Brayshaw, Llorenç Lledó, Irene Cionni, Jana Sillmann (June 2022) Predictive Skill of Teleconnection Patterns in Twentieth Century Seasonal Hindcasts and Their Relationship to Extreme Winter Temperatures in Europe, Geophysical Research Letters. DOI: 10.1029/2020GL092360
- Eroteida Sánchez-García, Ernesto Rodríguez-Camino, Valentina Bacciu, Marta Chiarle, José Costa-Saura, Maria Nieves Garrido, Llorenç Lledó, Beatriz Navascués, Roberta Paranunzio, Silvia Terzago, Giulio Bongiovanni, Valentina Mereu, Guido Nigrelli, Monia Santini, Albert Soret, Jost von Hardenberg (December 2022) Co-design of sectoral climate services based on seasonal prediction information in the Mediterranean, Climate Services. DOI: 10.1016/j.cliser.2022.100337
- R. Manzanas, V. Torralba, Ll. Lledó, P. A. Bretonnière (September 2022) On the Reliability of Global Seasonal Forecasts: Sensitivity to Ensemble Size, Hindcast Length and Region Definition, Geophysical Research Letters. DOI: 10.1029/2021GL094662
- 2021
- (June 2021) Earth System Model Evaluation Tool (ESMValTool) v2.0 – diagnostics for extreme events, regional and impact evaluation, and analysis of Earth system models in CMIP, Geoscientific Model Development. DOI: 10.5194/gmd-14-3159-2021
- Núria Pérez-Zanón, Louis-Philippe Caron, Silvia Terzago, Bert Van Schaeybroeck, Llorenç Lledó, Nicolau Manubens, Emmanuel Roulin, M. Carmen Alvarez-Castro, Lauriane Batté, Carlos Delgado-Torres, Marta Domínguez, Jost von Hardenberg, Eroteida Sánchez-García, Verónica Torralba, Deborah Verfaillie (December 2021) The CSTools (v4.0) Toolbox: from Climate Forecasts to Climate Forecast Information. DOI: 10.5194/gmd-2021-368
- Jaume Ramon, Llorenç Lledó, Pierre-Antoine Bretonnière, Margarida Samsó, Francisco J Doblas-Reyes (May 2021) A perfect prognosis downscaling methodology for seasonal prediction of local-scale wind speeds, Environmental Research Letters. DOI: 10.1088/1748-9326/abe491
- Jaume Ramon, Llorenç Lledó, Pierre-Antoine Bretonnière, Margarida Samsó, Francisco J. Doblas-Reyes (June 2021) Local-scale wind speed features captured by seasonal forecasts. DOI: 10.5194/ems2021-10
- Núria Pérez-Zanón, Louis-Philippe Caron, Silvia Terzago, Bert Van Schaeybroeck, Llorenç Lledó, Nicolau Manubens, Emmanuel Roulin, M. Carmen Alvarez-Castro, Lauriane Batté, Carlos Delgado-Torres, Marta Domínguez, Jost von Hardenberg, Eroteida Sánchez-García, Verónica Torralba, Deborah Verfaillie (December 2021) Supplementary material to "The CSTools (v4.0) Toolbox: from Climate Forecasts to Climate Forecast Information". DOI: 10.5194/gmd-2021-368-supplement
- 2020
- (February 2020) The Tall Tower Dataset: a unique initiative to boost wind energy research, Earth System Science Data. DOI: 10.5194/essd-12-429-2020
- Llorenç Lledó, Irene Cionni, Verónica Torralba, Pierre-Antoine Bretonnière, Margarida Samsó (July 2020) Seasonal prediction of Euro-Atlantic teleconnections from multiple systems, Environmental Research Letters n. 7, pp. 074009. DOI: 10.1088/1748-9326/ab87d2
- 2019
- (May 2019) Sub-seasonal to seasonal climate predictions for wind energy forecasting, Journal of Physics: Conference Series. DOI: 10.1088/1742-6596/1222/1/012009
- (July 2019) What global reanalysis best represents near surface winds?, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.3616
- Niels Drost, Andreas Sterl, Maarten Plieger, Nina Nadine Ridder, Dragana BOJOVIC, Louis-Philippe Caron, nicola cortesi, Nube Gonzalez-Reviriego, Virginie Guemas, Alasdair Hunter, Llorenç Lledó, Nicolau Manubens, Verónica Torralba, Javier Vegas-Regidor, Núria Pérez-Zanón, Veronika Eyring, Björn Brötz, Bettina Gier, Axel Lauer, Mattia Righi, Birgit Hassler, Manuel Schlund, Enrico Arnone, chiara cagnazzo, Susanna Corti, Paolo Davini, Jost von Hardenberg, Irene Mavilia, Federico Serva, Silvia Terzago, Peter Berg, Wim Som de Cerff, Bouwe Andela, Jaro Camphuijsen, Faruk Diblen, Yifat Dzigan, Willem van Hage, Ronald van Haren, Berend Weel, Mateusz Kuzak, Grenville Lister, Valeriu Predoi, Carsten Ehbrecht (August 2019) C3S-MAGIC Portal Dataset, Zenodo. DOI: 10.5281/zenodo.3367497
- Niels Drost, Andreas Sterl, Maarten Plieger, Nina Nadine Ridder, Dragana BOJOVIC, Louis-Philippe Caron, nicola cortesi, Nube Gonzalez-Reviriego, Virginie Guemas, Alasdair Hunter, Llorenç Lledó, Nicolau Manubens, Verónica Torralba, Javier Vegas-Regidor, Núria Pérez-Zanón, Veronika Eyring, Björn Brötz, Bettina Gier, Axel Lauer, Mattia Righi, Birgit Hassler, Manuel Schlund, Enrico Arnone, chiara cagnazzo, Susanna Corti, Paolo Davini, Jost von Hardenberg, Irene Mavilia, Federico Serva, Silvia Terzago, Peter Berg, Wim Som de Cerff, Bouwe Andela, Jaro Camphuijsen, Faruk Diblen, Yifat Dzigan, Willem van Hage, Ronald van Haren, Berend Weel, Mateusz Kuzak, Grenville Lister, Valeriu Predoi, Carsten Ehbrecht (August 2019) C3S-MAGIC Portal Dataset, Zenodo. DOI: 10.5281/zenodo.3367498
- (July 2019) The Weather Roulette: a game to communicate the usefulness of probabilistic climate predictions, Bulletin of the American Meteorological Society. DOI: 10.1175/bams-d-18-0214.1
- Ll. Lledó, V. Torralba, A. Soret, J. Ramon, F.J. Doblas-Reyes (December 2019) Seasonal forecasts of wind power generation, Renewable Energy, pp. 91-100. DOI: 10.1016/j.renene.2019.04.135
- Jaume Ramon, Llorenç Lledó, Núria Pérez-Zañón, Albert Soret, Francisco J. Doblas-Reyes (September 2019) Supplementary material to "The Tall Tower Dataset. A unique initiative to boost wind energy research". DOI: 10.5194/essd-2019-129-supplement
- Jaume Ramon, Llorenç Lledó, Núria Pérez-Zañón, Albert Soret, Francisco J. Doblas-Reyes (September 2019) The Tall Tower Dataset. A unique initiative to boost wind energy research. DOI: 10.5194/essd-2019-129
- 2018
- Llorenç Lledó, Omar Bellprat, Francisco J. Doblas‐Reyes, Albert Soret (May 2018) Investigating the Effects of Pacific Sea Surface Temperatures on the Wind Drought of 2015 Over the United States, Journal of Geophysical Research: Atmospheres. DOI: 10.1029/2017JD028019
- 2017
- Louis-Philippe Caron, Leon Hermanson, Alison Dobbin, Jara Imbers, Llorenç Lledó, Gabriel A. Vecchi (July 2017) How skilful are the multi-annual forecasts of Atlantic hurricane activity?, Bulletin of the American Meteorological Society. DOI: 10.1175/bams-d-17-0025.1
- 2016
- Verónica Torralba, Francisco J. Doblas-Reyes, Isadora Jiménez, Llorenç Lledó, Nube González-Reviriego, Albert Soret (February 2016) Development of a wind energy climate service based on seasonal climate prediction, Unpublished. DOI: 10.13140/rg.2.2.18352.15362
- 2015
- Oriol Lacave Clemente, Llorenç Lledó Ponsati, José Vidal (February 2015) MCP studies with reanalysis models: get a forecast of the uncertainty and complexity without observational data, Unpublished. DOI: 10.13140/rg.2.1.1760.3442
- 2012
- Lledó L., Montornès A., Tortosa A., Lacave O., Vidal J. (February 2012) A new approach to long-term adjustment of wind speed measures, European Wind Energy Conference and Exhibition 2012, EWEC 2012.
- 2010
- Oriol Lacave Clemente, Alejandro García Coque, José Vidal Pérez, LLorenç LLedó Ponsati, Joan Aymamí Nuestraseñora (February 2010) Using regional reanalysis over Europe as reference data for long-term wind climate adjustments, Unpublished. DOI: 10.13140/rg.2.1.4250.7126
- Oriol Lacave Clemente, Alejandro García Coque, José Vidal Pérez, LLorenç LLedó Ponsati, Joan Aymamí Nuestraseñora (February 2010) Using regional reanalysis over Europe as reference data for long-term wind climate adjustments, Unpublished. DOI: 10.13140/rg.2.1.1629.2728