Suya earns a PhD in Navigation and Satellite Positioning from the University of Nottingham. He also has an MSc in Geodesy and Engineering Surveying from the same university. Suya is a Global Navigation Satellite Systems (GNSS) enthusiast and a renowned geodesist who specialises in utilising satellit...
Mapping Meteorological Water Deficit across Malawi using Google Earth Engine and Cartographic Scripting
Conference Proceeding
Published 1 month ago, 193 views
Author
Dr. Robert Suya
Co-authors
Mr. Charles Kapachika, Ms. Rosemary Nyamwera, Emmanuel Mwamatope, Mr. Samson Mazonde Banda, Fabiano Mndala
Abstract
Malawi, like many other countries, faces growing challenges from climate variability and water scarcity. Despite advancements in remote sensing and meteorological data collection, comprehensive mapping and analysis of climatic water deficit remain limited. This study addresses this gap by investigating the spatial-temporal dynamics of meteorological water deficit in Malawi, utilising Moderate Resolution Imaging Spectroradiometer (MODIS) and gridded datasets. Through the application of Google Earth Engine and cartographic scripting, the research offers a detailed analysis of interrelated variables such as Land Surface Temperature (LST), air temperature, precipitation, and evapotranspiration, revealing regional disparities, and temporal trends in water availability. The results highlight significant spatial-temporal variations in temperature, with notable increases in LST during the dry season. Although general precipitation increases across the country during the study period, water deficit conditions persist. Furthermore, the study identifies substantial differences in actual evapotranspiration between northern and southern regions, reflecting varying water deficit impacts on LST. Future research priorities include developing national climate adaptation strategies using machine learning techniques to enhance resilience against climate variability.
Year of Publication
2024
Proceedings Title
State of The Map Malawi Conference: Reflecting on the Growth of the Geospatial Industry in Malawi and the Path Towards Sustainable Development
Page Numbers
1-11
Conference Dates
18-19 July 2024
Conference Place
Malawi University of Business and Applied Sciences (MUBAS), Blantyre