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Title: Drought termination: concept and characterisation
Authors: Parry, Simon
Prudhomme, Christel
Wilby, Robert L.
Wood, Paul J.
Keywords: Drought
Drought termination
End of drought
Hydrological cycle
Low flow
Meteorological drought
Agricultural drought
Hydrological drought
Groundwater drought
Issue Date: 2016
Publisher: © The Authors. Published by SAGE Publications
Citation: PARRY, S. ...et al., 2016. Drought termination: concept and characterisation. Progress in Physical Geography: an international review of geographical work in the natural and environmental sciences, 40(4), pp.743-767.
Abstract: There are numerous anecdotal examples of drought terminations documented throughout the historical record on most continents. The end of a drought is the critical time during which water resource managers urgently require information on the replenishment of supplies. Yet this phase has been relatively neglected by the academic community, with much of the existing body of research on drought termination assessing the likelihood of droughts ending rather than its temporal profile. In particular, there has been little effort to characterise drought termination events themselves. This is partly explained by existing definitions of drought termination as a specific point in time when drought is considered to have finished, rather than a more holistic consideration based on approaches developed within biological sciences. There is also a lack of understanding about how drought termination propagates through the hydrological cycle. This paper specifically examines and reviews available research on drought termination, highlighting limitations associated with current definitions and offering suggestions for characterising the temporal stages of drought. An alternative definition of drought termination is proposed: a period between the maximum negative anomaly and a return to above average conditions. Once this phase has been delineated, the duration, rate and seasonality of drought termination can be derived. The utility of these metrics is illustrated through a case study of the 2010-12 drought in the United Kingdom, and the propagation of drought termination between river flows and groundwater levels.
Description: This is an open access article published by Sage and distributed under the terms of the Creative Commons Attribution Licence (CC BY 3.0), https://creativecommons.org/licenses/by/3.0/
Sponsor: This research was funded through the Learning & Development programme at the NERC Centre for Ecology & Hydrology.
Version: Published
DOI: 10.1177/0309133316652801
URI: https://dspace.lboro.ac.uk/2134/21535
Publisher Link: http://dx.doi.org/10.1177/0309133316652801
ISSN: 0309-1333
Appears in Collections:Published Articles (Geography and Environment)

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