Climate and weather modellers develop computational models that integrate atmospheric physics, chemistry, ocean interactions, land processes, and satellite observations. They work with numerical weather prediction systems, climate simulations, and high-performance computing to analyse variability, extreme events, and long-term trends. Their models are used in disaster planning, agriculture, aviation, climate policy, renewable energy forecasting, and environmental monitoring. They collaborate with atmospheric scientists, data specialists, and policy analysts. Increasing climate uncertainty and global demand for accurate prediction tools make this a high-impact and rapidly developing field.