The Year of Polar Prediction (YOPP) is one of the key elements of the Polar Prediction Project. YOPP is scheduled to take place from mid-2017 to mid-2019. During the period, scientists and operational forecasting centers from various different countries will work together to observe, model, and improve forecasts of the Arctic and Antarctic weather and climate systems. This two-year international effort, which aims to close gaps in polar forecasting capacity, will lead to better forecasts of weather and sea-ice conditions to improve future environmental safety at both poles. Improved forecasts in polar regions are also expected to result in better weather prediction at lower latitudes where most people live. The Year of Polar Prediction has been initiated by WMO as a response to rapid polar climate change and related transformation of societal and economic activities at the poles.