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Advances in the subseasonal prediction of extreme events: relevant case studies across the globe

Domeisen, D. I.V., White, C. J., Afargan-Gerstman, H., Munoz, A. G., Jaiga, M. A., Vitart, F., Wulff, C. O., Antoine, S., Ardilouze, C., Batte, L., Bloomfield, H. C. ORCID: https://orcid.org/0000-0002-5616-1503, Brayshaw, D. J. ORCID: https://orcid.org/0000-0002-3927-4362, Camargo, S. J., Charlton-Perez, A., Collins, D., Cowan, T., del Mar Chaves, M., Ferranti, L., Gomez, R., Gonzalez, P. L. M. ORCID: https://orcid.org/0000-0003-0154-0087 , Gonzalez Romero, C., Infanti, J. M., Karozis, S., Kim, H., Kolstad, E. W., LaJoie, E., Lledo, L., Magnusson, L., Malguzzi, P., Manrique-Sunen, A., Mastrangelo, D., Materia, S., Medina, H., Palma, L., Pineda, L. E., Sfetsos, A., Son, S.-W., Soret, A., Strazzo, S. and Tian, D. (2022) Advances in the subseasonal prediction of extreme events: relevant case studies across the globe. Bulletin of the American Meteorological Society, 103 (6). pp. 1473-1501. ISSN 1520-0477 (In Press)

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To link to this item DOI: 10.1175/BAMS-D-20-0221.1

Abstract/Summary

Extreme weather events have devastating impacts on human health, economic activities, ecosysytems, and infrastructure. It is therefore crucial to anticipate extremes and their impacts to allow for preparedness and emergency measures. There is indeed potential for probabilistic subseasonal prediction on timescales of several weeks for many extreme events. Here we provide an overview of subseasonal predictability for case studies of some of the most prominent extreme events across the globe using the ECMWF S2S prediction system: heatwaves, cold spells, heavy precipitation events, and tropical and extratropical cyclones. The considered heatwaves exhibit predictability on timescales of 3-4 weeks, while this timescale is 2-3 weeks for cold spells. Precipitation extremes are the least predictable among the considered case studies. Tropical cyclones, on the other hand, can exhibit probabilistic predictability on timescales of up to 3 weeks, which in the presented cases was aided by remote precursors such as the Madden-Julian Oscillation. For extratropical cyclones, lead times are found to be shorter. These case studies clearly illustrate the potential for event - dependent advance warnings for a wide range of extreme events. The subseasonal predictability of extreme events demonstrated here allows for an extension of warning horizons, provides advance information to impact modelers, and informs communities and stakeholders affected by the impacts of extreme weather events.

Item Type:Article
Refereed:Yes
Divisions:Science > School of Mathematical, Physical and Computational Sciences > NCAS
Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:104243
Publisher:American Meteorological Society

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