Hopefully, the textbook will contribute to an increased awareness of one of our main natural hazards, and thereby increase the preparedness and resilience of society to drought. The international dataset illustrates the drought phenomenon and its diversity across the world, whereas regional data and local aspects of drought are studied using a combination of hydroclimatological time series and catchment information. Four datasets are included on Github an international, a regional and two local datasets. Self-guided tours are demonstrations of advanced methodologies that involve several calculation steps and are given as an online presentations. Worked examples include online procedures, code, and details of the calculation procedure that enable readers to repeat calculations in a stepwise manner, either with their own data or by using online datasets, and we encourage user’s feedbacks and experiences in testing these. The textbook is supported with worked examples and self-guided tours that are elaborated more extensively on Github. This presentation aims to introduce the textbook, its motivation and content to a wide audience. Knowledge and experiences shared in the book are from regions all over the world although somewhat biased to Europe and rivers that flow most of the year. Topics include historical and future drought, how human interventions influence drought, drought impacts and Drought Early Warning Systems. Part III (Living with drought) addresses aspects related to the interactions between water and people. frequency analysis, time series analysis and regionalization procedures, as well as process-based modelling. Part II (Estimation methods) presents contemporary approaches to drought estimation, including data and hydrological drought characteristics, statistical analysis of drought series, incl. The textbook consists of three parts Part I (Drought as a natural hazard) discusses the drought phenomenon, its main features, regional diversity and controlling processes. An updated synthesis was needed because of hydrological drought-issues that has been emerged over the last 15 years, particularly when much of the topic is currently dominated by climate and climatology approaches. Contemporary knowledge and experiences from an international team of drought experts are consolidated in a textbook (Tallaksen et al., 2023), which builds on an earlier edition (URL 1), however with significant new material added. The resultant meteorological water balance deficiency may cause a hydrological drought to develop into below normal levels of streamflow, lakes, and groundwater. 12Physical Geography, University of Utrecht, Vening Meineszgebouw A, Princetonlaan 8a, Room 4.48, 3584 CB Utrecht, The Netherlandsĭrought is a worldwide phenomenon that originates from a prolonged deficiency in precipitation, often combined with high evaporation, over an extended region.11Water & Climate Risk group, Institute for Environmental Studies, Vrije Universiteit Amsterdam, De Boelelaan 1111, 1081 HV Amsterdam, The Netherlands.10Faculty of Environment and Natural Resources, University of Freiburg, Friedrichstraße 39, D-79098 Freiburg, Germany.9Department of Civil, Environmental and Geodetic Engineering, Ohio State University, 417E Hitchcock Hall, 2070 Neil Avenue, Columbus, OH 43210, USA.8Loughborough University, Epinal Way, Loughborough, LE11 3TU, United Kingdom.7Environmental Forecasts, European Centre for Medium-Range Weather Forecasts (ECMWF), Shinfield Park, Reading, RG2 9AX, United Kingdom.6Institute of Statistics, University of Natural Resources and Life Sciences, Vienna (BOKU), Peter-Jordan-Straße 82/I, 1190 Vienna, Austria.5School of Geography/Te Iho Whenua, University of Otago/Te Whare Wānanga o Ōtākou, PO Box 56 Dunedin 9054, New Zealand/Aotearoa.4Hydrology Department, Norwegian Water Resources and Energy Directorate (NVE), MiddelthunsgOslo, Norway.3UK Centre for Ecology & Hydrology (UKCEH), Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford, Oxfordshire, OX10 8BB, United Kingdom.1University of Oslo, Department of Geosciences, Oslo, Norway 2Hydrology and Quantitative Water Management Group, Wageningen University & Research, P.O.
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