Your search found 2 records
1 Villholth, Karen G.; Tottrup, C.; Stendel, M.; Maherry, A. 2013. Integrated mapping of groundwater drought risk in the Southern African Development Community (SADC) Region. Hydrogeology Journal, 21(4):863-885. [doi: https://doi.org/10.1007/s10040-013-0968-1]
Groundwater resources ; Water demand ; Drought ; Risk assessment ; Mapping ; GIS ; Climate change ; Data ; Aquifers ; Sensitivity analysis / Africa
(Location: IWMI HQ Call no: e-copy only Record No: H045812)
(2.29 MB)
Groundwater drought denotes the condition and hazard during a prolonged meteorological drought when groundwater resources decline and become unavailable or inaccessible for human use. Groundwater drought risk refers to the combined physical risk and human vulnerability associated with diminished groundwater availability and access during drought. An integrated management support tool, GRiMMS, is presented, for the mapping and assessment of relative groundwater drought risk in the Southern African Development Community (SADC) region. Based on composite mapping analysis of regionwide gridded relative indices of meteorological drought risk, hydrogeological drought proneness and human groundwater drought vulnerability, the mapping results highlight consistent areas across the region with highest groundwater drought risk and populations in the order of 39 million at risk of groundwater drought at present. Projective climate-model results suggest a potentially significant negative impact of climate change on groundwater drought risk. The tool provides a means for further attention to the key, but neglected, role of groundwater in drought management in Africa.
2 Strauch, A.; Bunting, P.; Campbell, J.; Cornish, N.; Eberle, J.; Fatoyinbo, T.; Franke, J.; Hentze, K.; Lagomasino, D.; Lucas, R.; Paganini, M.; Rebelo, Lisa-Maria; Riffler, M.; Rosenqvist, A.; Steinbach, S.; Thonfeld, F.; Tottrup, C.. 2022. The fate of wetlands: can the view from space help us to stop and reverse their global decline?. In Kavvada, A.; Cripe, D.; Friedl, L. (Eds.). Earth observation applications and global policy frameworks. Washington, DC, USA: American Geophysical Union (AGU); Hoboken, NJ, USA: John Wiley. pp.85-104. (Geophysical Monograph Series 274) [doi: https://doi.org/10.1002/9781119536789.ch5]
Wetlands ; Monitoring ; Collaboration ; Frameworks ; Earth observation satellites ; Landsat ; Datasets ; Mapping ; Sustainable Development Goals ; Stakeholders ; Ecosystem services ; Water resources ; Surface water ; Water quality ; Mangroves ; Land use ; Land cover ; Normalized difference vegetation index ; Case studies / Europe / Africa / Rwanda / Senegal
(Location: IWMI HQ Call no: e-copy only Record No: H051369)
(23.00 MB)
Wetlands are among the most vulnerable, threatened, valuable, diverse, and heterogeneous ecosystems existing on our planet. While they provide invaluable ecosystem services to our society, they have been declining globally for many centuries. Monitoring of these changes is necessary for implementing efficient conservation policies and sustainable management schemes. Earth observation techniques can support the effort of monitoring, assessing, and inventorying wetlands at different scales with ever growing capabilities and toolsets. While the GEO-Wetlands initiative provides a framework for collaboratively increasing and utilizing these capabilities, global stakeholders like the Ramsar Convention on Wetlands and U.N. Environment are starting to adopt EO-based methods in their guidelines and technical reports. Many challenges still remain, although different projects and case studies successfully demonstrate the opportunities provided by the growing data archives, analysis algorithms, and processing capabilities. Many of these demonstrations focus on local wetland sites. The mapping and inventorying, specifically of vegetated wetlands, on national or even global scales remains a challenge for the wetlands and EO communities for years to come. Collaboration and partnership between different stakeholders of both communities are key for success. Initiatives like GEO-Wetlands, in cooperation with global stakeholders, need to provide the framework for this collaborative effort.
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