Building understanding of climate variability into planning of groundwater supplies from low storage aquifers in Africa - Second Phase (BRAVE2)

将对气候变化的理解纳入非洲低蓄水层地下水供应规划中——第二阶段 (BRAVE2)

基本信息

批准号：
NE/M008983/1
负责人：
Rosalind Cornforth
金额：
$ 158.09万
依托单位：
University of Reading
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FM008983%2F1
关键词：
Building understanding climate variability into

项目摘要

Secure access to water by the rural poor in Africa is central to the achievement of the Millennium Development Goals. With more than 500 million Africans dependent on groundwater and the potential for expanded use, the resilience of aquifers in the face of climate, population growth, and land-use change is key to this. Evidence suggests however, that during extended periods of low rainfall, groundwater supplies from low storage aquifers can fail. It is unclear, therefore, whether planned development of substantial numbers of groundwater supplies as a means to meet the expected large increase in demand, will be effective in all areas of sub-Saharan Africa. In the absence of long historical records of borehole levels, we are reliant on process understanding and modelling to infer the stability of groundwater supplies. In partnership with national and local government, NGOs and researchers, the BRAVE project will incorporate new understanding of climate variability and observational capacity and its water resource impacts into the planning and operation of groundwater supplies in the Volta River Basin. As a result of improved understanding of how water moves through catchments representative of the Volta River Basin, combined with output from state-of-the-art climate, land surface and groundwater models, new scientific knowledge will allow appropriate tools to be developed for planning at a range of scales: basin-scale long-term regional planning of aquifer-based water supplies for domestic and productive uses; local-scale long-term and seasonal community management of groundwater supplies; and provision of information that allows timely emergency planning in the light developing drought conditions. New observational capacity and assessments of user vulnerability and an understanding of governance frameworks linking local communities to national government, along with this new scientific knowledge, will be translated into forms that allow participatory decision-making to be made. Bringing together communities, practitioners and policy-makers, the application of the planning tools will be piloted in a series of case studies within eight communities in Ghana and Burkina Faso. A set of meaningful groundwater management tools will be developed with these communities that specifically address the information they want and need, and which are embedded within the existing local, district, national and regional governance structures. The use of the system in the pilot communities will provide insights into the extent such an approach can support sustainable decision making and equitable uptake. Furthermore, after consultation with our partners, we will also develop a methodology to produce seasonal groundwater status reports which will be linked into the newly operational Rainwatch-AfClix Drought Early Warning System in Burkina Faso and Ghana. BRAVE will contribute to building the resilience of poor communities to climate variability and environmental change in the Volta River Basin. The project outputs will be of direct relevance to government departments responsible for water supply development, as well as humanitarian and development organisations. Actively working together from the project inception will encourage ownership, culminating in the co-design and implementation of the planning tools. This will deliver a strategic shift in future national disaster risk reduction, adaptation and resilience related policies to support increased water security for the poorest people in Ghana and Burkina Faso with lessons around resilience building for the wider Sahel region.

非洲农村贫困人口获得水的安全是实现千年发展目标的核心。有超过5亿非洲人依赖地下水以及扩大使用的潜力，面对气候，人口增长和土地利用变化，含水层的弹性是这样的关键。然而，有证据表明，在低降雨的长时间，低储藏式含水层的地下水供应可能会失败。因此，目前尚不清楚计划开发大量地下水供应作为满足预期需求的大幅增长的一种手段，在撒哈拉以南非洲的所有地区都将有效。在没有钻孔水平的长期历史记录的情况下，我们依靠过程理解和建模来推断地下水供应的稳定性。与国家和地方政府，非政府组织和研究人员合作，Brave项目将对气候变异性和观察能力及其水资源影响的新了解纳入Volta河流盆地地下水供应的规划和运营中。由于人们对水如何通过代表Volta河盆地的流域移动的了解，再加上最先进的气候，陆地表面和地下水模型的输出，新的科学知识将允许开发适当的工具，以计划在一系列规模上规划：盆地规模的长期基于水上式水上供水的地区供应型家庭和生产力的使用；地下水供应的地方规模的长期和季节性社区管理；并提供允许在轻型干旱条件下及时紧急计划的信息。新的观察能力和对用户脆弱性的评估以及对将当地社区与国家政府联系起来的治理框架的理解，以及这种新的科学知识，将被转化为允许参与性决策的形式。将计划工具的应用汇集在一起，将在加纳和布基纳法索的八个社区的一系列案例研究中进行试验。这些社区将开发一系列有意义的地下水管理工具，这些工具专门解决了他们想要和需要的信息，并嵌入了现有的本地，地区，国家，国家和地区治理结构中。在飞行员社区中，系统的使用将提供有关这种方法可以支持可持续决策和公平吸收程度的洞察力。此外，在与我们的合作伙伴进行了磋商之后，我们还将开发一种方法，以生成季节性地下水状态报告，该报告将与布基纳法索和加纳新近运营的Rainwatch-Afclix-Afclix干旱预警系统有关。勇敢将有助于建立贫困社区对伏尔塔河流域气候变化和环境变化的韧性。该项目的产出将与负责供水开发以及人道主义和发展组织负责的政府部门具有直接相关性。从项目开始中积极合作将鼓励所有权，最终达到计划工具的共同设计和实施。这将在未来的国家灾害风险减少，适应和韧性相关的政策中进行战略转变，以支持加纳和布基纳法索最贫穷的人的水安全，并在更广泛的萨赫勒地区进行弹性建设。