Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 27, issue 5
Articles | Volume 27, issue 5
https://doi.org/10.5194/hess-27-1151-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-27-1151-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 27, issue 5
Research article
 | 
16 Mar 2023
Research article |  | 16 Mar 2023

Projected changes in droughts and extreme droughts in Great Britain strongly influenced by the choice of drought index

Nele Reyniers, Timothy J. Osborn, Nans Addor, and Geoff Darch

Supplement

https://doi.org/10.5194/hess-27-1151-2023-supplement

Data sets

Projected changes in droughts and extreme droughts in Great Britain are strongly influenced by the choice of drought index: UKCP18-based SPI and SPEI data Nele Reyniers, Timothy J. Osborn, Nans Addor, and Geoff Darch https://doi.org/10.5281/zenodo.6123020

Projected changes in droughts and extreme droughts in Great Britain are strongly influenced by the choice of drought index: UKCP18-based bias adjusted potential evapotranspiration Nele Reyniers, Timothy Osborn, Nans Addor, and Geoff Darch https://doi.org/10.5281/zenodo.6320707

Climate hydrology and ecology research support system potential evapotranspiration dataset for Great Britain (1961-2017) [CHESS-PE] E. Robinson, E. Blyth, D. Clark, E. Comyn-Platt, and A. Rudd https://doi.org/10.5285/9116e565-2c0a-455b-9c68-558fdd9179ad

HadUK-Grid Gridded Climate Observations on a 1 km grid over the UK, v1.0.1.0 (1862-2018) Met Office, D. Hollis, M. McCarthy, M. Kendon, T. Legg, and I. Simpson https://doi.org/10.5285/d134335808894b2bb249e9f222e2eca8

UKCP18 Regional Projections on a 12 km Grid over the UK for 1980-2080 Met Office Hadley Centre https://catalogue.ceda.ac.uk/uuid/589211abeb844070a95d061c8cc7f604

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Short summary
In an analysis of future drought projections for Great Britain based on the Standardised Precipitation Index and the Standardised Precipitation Evapotranspiration Index, we show that the choice of drought indicator has a decisive influence on the resulting projected changes in drought characteristics, although both result in increased drying. This highlights the need to understand the interplay between increasing atmospheric evaporative demand and drought impacts under a changing climate.
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