GroMoPo Metadata for Puntland groundwater quality model

Groundwater is an essential source of drinking and farming in Puntland state of Somalia. Puntland suffers from major water scarcity, the lack of safe drinking water in Puntland is a frequent problem. The objective of this study is to assess the groundwater quality using geostatistical algorithm based on Geographic Information System (GIS). In this research, we utilized ordinary kriging interpolation technique for generating the spatial distribution of groundwater parameters. Experimental semivariogram were tested for different models to identify the best fitted semivariogram model for each parameter and best fitted semivariogram models was chosen based on the lowest value of root mean square error (RMSE) value. The final map indicates that the majority groundwater quality in the study area are not suitable for drinking purposes in according to WHO water quality standards. The results of the research shows that it is vital to develop monitoring tools and management strategies for the groundwater in the region.地下水是索马里邦特兰州饮用水与农业灌溉的核心资源。该地区面临严峻的水资源短缺问题，安全饮用水匮乏是当地长期存在的普遍难题。本研究旨在基于地理信息系统（Geographic Information System, GIS），借助地统计算法评估地下水水质。研究采用普通克里金插值技术，构建地下水各参数的空间分布格局；针对不同模型开展实验半变异函数拟合测试，以筛选各参数对应的最优半变异函数模型，模型选取准则为均方根误差（Root Mean Square Error, RMSE）最小化。最终空间分布图显示，依据世界卫生组织（World Health Organization, WHO）水质标准，研究区域内绝大多数地下水水质不符合饮用要求。本研究结果表明，针对该区域地下水开发监测工具与管理策略至关重要。