Climatology is the scientific study of climate, its elements, controlling factors, distribution, variations, and long-term behavior over different regions of the Earth. Unlike meteorology, which deals with short-term atmospheric conditions and weather forecasting, climatology focuses on the average atmospheric conditions over a long period, usually thirty years or more. It examines the interactions among the atmosphere, hydrosphere, lithosphere, cryosphere, and biosphere to understand climate patterns and processes. Climatology also studies climatic classifications, climatic change, and the influence of climate on natural ecosystems and human activities. The development of climatology has passed through several distinct phases, each reflecting advances in scientific knowledge, observational techniques, and technological innovations. The first phase is known as the Descriptive Climatology phase. This period extended from ancient civilizations to the nineteenth century. Early civilizations such as the Greeks, Romans, Indians, and Chinese made observations about seasonal weather, rainfall, winds, and temperature. Greek scholars like Aristotle contributed significantly through works such as *Meteorologica*, which attempted to explain atmospheric phenomena. During this phase, climate was described mainly through observations, travel records, and geographical accounts. Climatic differences were explained based on latitude, and the Earth was divided into climatic zones such as torrid, temperate,