A Geographic Information System (GIS) is a framework for gathering, managing, analyzing, and visualizing spatial and geographic data. It integrates hardware, software, data, and people to capture, store, manipulate, and display information linked to specific locations on the Earth’s surface. In the context of climate change assessment, GIS plays a crucial role in understanding environmental patterns, modeling climate impacts, and supporting decision-making processes related to vulnerability, adaptation, and mitigation strategies. By enabling the analysis of spatial relationships and temporal changes, GIS allows scientists, policymakers, and planners to visualize complex climate data, identify risk areas, and prioritize interventions effectively. The primary components of a GIS can be broadly categorized into five interrelated elements: hardware, software, data, people, and methods. Hardware refers to the physical equipment required to run GIS applications, including computers, servers, storage devices, GPS receivers, and remote sensing instruments. Modern GIS hardware also includes mobile devices and drones, which facilitate real-time data collection and field observations, crucial for monitoring climate change impacts such as deforestation, urban heat islands, or flood-prone areas. Efficient hardware ensures high processing speed, large storage capacity, and the ability to handle complex spatial computations, which is essential for analyzing large datasets generated from climate models and observational networks. Software constitutes the programs and applications used to manage, process, and analyze spatial data. GIS software provides tools for data visualization, mapping, spatial analysis, modeling, and reporting. Popular GIS software includes ArcGIS, QGIS, and ERDAS Imagine, which enable users to overlay