Ethiopia

Water scarcity and quality decline is a rapidly increasing challenges and becoming a top concern globally. To wisely manage water and achieve sustainable development, rapid and precise monitoring of water resources is crucial. Earth observation (EO) technologies play a key role in monitoring surface and underground water resources by providing rapid, continuous, high-quality, and low-cost EO data, products, and services. Currently, there are promising efforts in the use of EO technologies for water resource management but there are still huge gaps in the Africa region. The reason for the low utilization of EO technologies can be due to a lack of resources and funding including skilled and motivated human resources in the field and the lack of political commitment to foster EO products, data, and services. Therefore, the use of space technologies and their products to solve water-related problems needs collaborative efforts of all concerned stakeholders from global to local levels.

Ethiopia, like many developing countries, faces significant threat from droughts triggered by climate change. The country's heavy reliance on agriculture for production, export revenues, and employment makes it highly susceptible to climate change-induced challenges, such as frequent floods, droughts and rising temperatures. Therefore, this research aims to assess drought-prone areas in Meyo district, Borena Zone, thereby contributing to the attainment of SDG 13.1 and the creation of a more resilient and sustainable future in the face of climate change. To achieve the objective, the study employs the Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) as indicators and the drought risk map was developed using weighted overlay analysis. Landsat images and rainfall datasets from December in the years 2002, 2012, and 2022 were analyzed to track changes. The result reveals a clear inverse relationship between NDVI and LST, where higher temperatures coincide with decreased NDVI values, signifying vegetation stress caused by reduced water availability. The study also highlights the deficient rainfall and high drought vulnerability in the norther and eastern parts of the study area. The provided drought risk map classifies areas into Low, Moderate, and High risk, illustrating the evolving drought scenario and it signifies increasing severity of drought risk in recent years, particularly from 2012 to 2022. The finding holds vital information for decision-makers, policymakers, and stakeholders in devising effective strategies to mitigate the adverse effect of drought and build resilience in the of climate change.

Water hyacinth is a well-known plant that has invaded many aquatic ecosystems around the globe. The fast growing nature of the weed makes it challenging to contain. The weeds’ presence in aquatic bodies results in decreased oxygen and nutrient levels, which threatens aquatic life as well as the productivity and functionality of the whole aquatic ecosystem. This not only causes ecological disturbances but evidently socio-economic challenges arise as well as the weed can be detrimental to health as well as economic activities in many riparian communities worldwide. The use of space-based technology together with modern technologies is of great significance in capturing the weed and identifying its spatial and temporal distribution even in hard to reach places. This helps scientists better understand the weed and how infestation occurs which enables better management and control of the weed.

Merci à Mussa Kachunga Stanis d'avoir traduit cet article volontairement.

La résilience d'un socio-écosystème est généralement testée par sa capacité à persister et à maintenir sa fonctionnalité tout en subissant des changements dus à des perturbations. Mais que se passe-t-il lorsque les perturbations sont trop rapides, trop préjudiciables et trop fortes pour qu'un socio-écosystème puisse maintenir sa fonctionnalité ?

Water scarcity and quality decline is a rapidly increasing challenges and becoming a top concern globally. To wisely manage water and achieve sustainable development, rapid and precise monitoring of water resources is crucial. Earth observation (EO) technologies play a key role in monitoring surface and underground water resources by providing rapid, continuous, high-quality, and low-cost EO data, products, and services. Currently, there are promising efforts in the use of EO technologies for water resource management but there are still huge gaps in the Africa region. The reason for the low utilization of EO technologies can be due to a lack of resources and funding including skilled and motivated human resources in the field and the lack of political commitment to foster EO products, data, and services. Therefore, the use of space technologies and their products to solve water-related problems needs collaborative efforts of all concerned stakeholders from global to local levels.

Nuredin Teshome received the Bachelor of Science degree in Physics from Dire Dawa University and the Master of Science degree in Computational Physics from Haramaya University. In support of his bachelor, master studies and his enrolment for PhD studies he received fellowships to carry out research at Botswana International University of Science and Technology (2022-2023). In addition, he also received ‘Advanced Diploma in Data Science with R’, ‘Diploma in Environmental Management’ and ‘Diploma in Environmental Quality Monitoring and Analysis’ from Alison online training platform. From 2016 to 2019 he served as a lecturer and head of the Department of physics at Jigjiga University and he also serves as a lecturer at Wollo University starting from mid-2019. Currently, he is a PhD student at Addis Ababa University (Space Science and Geospatial Institute) in Space and Planetary Science Department.

Mastawesha Misganaw Engdaw is a research scientist with an academic background including geo-information science and earth observation, water resources management, hydrology, and climate change. His research activities include assessing the past, present, and future changes in the climate system, as well as its impacts on multiple sustainable development goals. He is particularly interested in assessing impacts of climate change on hydrological extremes and water resources management. Mastawesha is currently working on climate risk assessment and attribution of compound hydrological extreme events.

Applications are invited from African nationals for scholarships in the fields of Astronomy, Astrophysics, Space and Planetary Science, Planetary Geology and Remote Sensing.

The 3rd PAPSSN Call offers the following scholarships:

Nuredin Teshome received the Bachelor of Science degree in Physics from Dire Dawa University and the Master of Science degree in Computational Physics from Haramaya University. In support of his bachelor, master studies and his enrolment for PhD studies he received fellowships to carry out research at Botswana International University of Science and Technology (2022-2023). In addition, he also received ‘Advanced Diploma in Data Science with R’, ‘Diploma in Environmental Management’ and ‘Diploma in Environmental Quality Monitoring and Analysis’ from Alison online training platform. From 2016 to 2019 he served as a lecturer and head of the Department of physics at Jigjiga University and he also serves as a lecturer at Wollo University starting from mid-2019. Currently, he is a PhD student at Addis Ababa University (Space Science and Geospatial Institute) in Space and Planetary Science Department.

Mastawesha Misganaw Engdaw is a research scientist with an academic background including geo-information science and earth observation, water resources management, hydrology, and climate change. His research activities include assessing the past, present, and future changes in the climate system, as well as its impacts on multiple sustainable development goals. He is particularly interested in assessing impacts of climate change on hydrological extremes and water resources management. Mastawesha is currently working on climate risk assessment and attribution of compound hydrological extreme events.

Applications are invited from African nationals for scholarships in the fields of Astronomy, Astrophysics, Space and Planetary Science, Planetary Geology and Remote Sensing.

The 2nd PAPSSN Call offers the following scholarships: