Abstract
This paper demonstrates the impracticality of a comprehensive mathematical definition of the term ‘drought’ which formalises the general qualitative definition that drought is ‘a deficit of water relative to normal conditions’. Starting from the local water balance, it is shown that a universal description of drought requires reference to water supply, demand and management. The influence of human intervention through water management is shown to be intrinsic to the definition of drought in the universal sense and can only be eliminated in the case of purely meteorological drought. The state of drought is shown to be predicated on the existence of climatological norms for a multitude of process-specific terms. In general, these norms are either difficult to obtain or even non-existent in the non-stationary context of climate change. Such climatological considerations, in conjunction with the difficulty of quantifying human influence, lead to the conclusion that we cannot reasonably expect the existence of any workable generalised objective definition of drought.
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References
European Commission (2007) Second interim report on water scarcity and droughts. European Commission, Brussels, p 93
Heim RR Jr (2002) A review of twentieth-century drought indices used in the United States. Bull Amer Meteor Soc 83(8):1149–1165
Mawdsley J, Petts G, Walker S (1994) Assessment of drought severity. British Hydrological Society, London, p 30
Morid S, Smakhtin V, Moghaddasi M (2006) Comparison of seven meteorological indices for drought monitoring in Iran. Int J Climatol 26(7):971–985
Oxford English Dictionary (2011) Definition of drought. Oxford University Press, Oxford. http://oxforddictionaries.com/definition/drought
Palmer WC (1965) Meteorological drought. Research paper no. 45. US Weather Bureau, Washington, p 58
Sheffield J, Wood EF (2011). Drought: past problems and future scenarios. Earthscan, London, p 210
Smakhtin VU, Hughes DA (2004) Review, automated estimation and analyses of drought indices in South Asia. Number working paper no. 83—drought series paper no. 1. IWMI, Colombo
Smakhtin VU, Schipper ELF (2008) Droughts: the impact of semantics and perceptions. Water Policy 10(2):131–143
Steila D (1987) The encyclopedia of climatology, chap Drought. van Nostrand Reinhold, pp 388395; p 1002
Svoboda M, LeComte D, Hayes M, Heim R, Gleason K, Angel J, Rippey B, Tinker R, Palecki M, Stooksbury D, Miskus D, Stephens S (2002) The drought monitor. Bull Am Meteor Soc 83(8):1181–1190
Tallaksen LM, van Lanen HAJ (2004) Hydrological drought: processes and estimation methods for streamflow and groundwater. Developments in water science. Elsevier, Amsterdam, ISBN 9780444517678, p 579
van Lanen HAJ, Kundzewicz ZW, Tallaksen LM, Hisdal H, Fendeková M, Prudhomme C (2009) Indices for different types of droughts and floods at different scales. WATCH Tech Rep 11:20
White DH, Walcott JJ (2009) The role of seasonal indices in monitoring and assessing agricultural and other droughts: a review. Crop Pasture Sci 60:599–616
Wilhite DA, Glantz MH (1985) Understanding the drought phenomenon: the role of definitions. Water Int 10(3):111–120
World Meteorological Organization (1992) International meteorological vocabulary, 2nd edn. Publication no. 182. World Meteorological Organization (WMO), Geneva, p 784
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The author thanks Deloitte for supporting the Deloitte-Walker Institute Research Fellowship at the University of Reading.
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Lloyd-Hughes, B. The impracticality of a universal drought definition. Theor Appl Climatol 117, 607–611 (2014). https://doi.org/10.1007/s00704-013-1025-7
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DOI: https://doi.org/10.1007/s00704-013-1025-7