Assessment, monitoring, and early warning of droughts: the potential for satellite remote sensing and beyond

Graw, Valerie, Dubovyk, Olena, Duguru, Moses, Heid, Paul, Ghazaryan, Gohar, Villagrán de León, Juan Carlos, Post, Joachim, Szarzynski, Joerg, Tsegai, Daniel and Walz, Yvonne, "Assessment, monitoring, and early warning of droughts: the potential for satellite remote sensing and beyond" in Drought Challenges – Policy Options for Developing Countries, In: Current Directions in Water Scarcity Research ed. Mapedza, Everisto, Tsegai, Daniel, Bruntrup, Michael and McLeman, Robert (Amsterdam: Elsevier Ltd, 2019), 115-131.

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  • Author Graw, Valerie
    Dubovyk, Olena
    Duguru, Moses
    Heid, Paul
    Ghazaryan, Gohar
    Villagrán de León, Juan Carlos
    Post, Joachim
    Szarzynski, Joerg
    Tsegai, Daniel
    Walz, Yvonne
    Book Editor Mapedza, Everisto
    Tsegai, Daniel
    Bruntrup, Michael
    McLeman, Robert
    Chapter Title Assessment, monitoring, and early warning of droughts: the potential for satellite remote sensing and beyond
    Book Title Drought Challenges – Policy Options for Developing Countries, In: Current Directions in Water Scarcity Research
    Publication Date 2019-09-25
    Place of Publication Amsterdam
    Publisher Elsevier Ltd
    Start page 115
    End page 131
    Language eng
    Abstract The intensity and frequency of droughts is increasing worldwide and triggers the demand to understand the characteristics of a drought event and its impacts on the environmental and social system. Ranking among the most severe large-scale extreme weather events with highest impacts on livelihoods, there is an increasing demand to understand the characteristics of droughts. A number of countries express their great concern about the challenges posed to their sustainable development agenda due to droughts, as well as to desertification and land degradation and their relations to drought, especially in Africa. By monitoring related climatic conditions and their impact on the ground, remote sensing (RS) serves as an outstanding tool to monitor changes on the land surfaces without being in situ. It allows to cover large areas and to detect impacts on different land variables such as water bodies, soil conditions, and vegetation. Depending on different sensors and various spatial and temporal resolutions, analyses can be carried out from local to national and even to global scales. In addition, with the combined use of archived and up-to-date satellite data, it is possible to compare the geographical extent and severity of droughts in different years. The overall aim of this chapter is to review the role and contribution of satellite RS data for assessing and monitoring droughts and their impacts, its potential to provide early warning of future drought events, and remaining challenges. We explore additional information that needs to be provided in order to complement RS-based information for assessing impacts on human livelihoods, using the conceptual framing of hazard, exposure, and vulnerability. An example of a comprehensive analysis framework is the EvIDENZ (Earth Observation–based Information Product for Drought Risk Reduction on the National Level) project which takes advantage from the integration of RS information and socioeconomic data.
    UNBIS Thesaurus EARLY WARNING SYSTEMS
    Keyword Drought Risk
    EvIDENz project
    Geospatial modeling
    Satellite remote sensing
    Sustainable Development Goals
    Copyright Holder Elsevier Inc.
    Copyright Year 2019
    Copyright type All rights reserved
    ISBN 9780128148204
    9780128148211
    DOI 10.1016/B978-0-12-814820-4.00009-2
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    Created: Wed, 15 Jan 2020, 02:01:50 JST by Aarti Basnyat on behalf of UNU EHS