عنوان مقاله [English]
This study was conducted to inform the World Meteorological Organization and other relevant organizations to annual climate and extreme climate events of Iran during 2018. The extreme events that studied are heat waves, cold waves, heavy rainfall, sandstorms, dust and lightning that are selected according to WMO guidelines. Heat wave and cold wave were calculated by using standard deviation of maximum and minimum daily temperature and percentile index. Sandstorm, dust and lightning are studied base on the syncopated stations records. The average temperature of the country in 2018 was 18.8 C, based on 27 synoptic stations in the country is increased 3.1 C compare to the average long-term period (1958-2017) and 0.4 C compare to 2017. The precipitation of the country in 2017 has increased by 15 percent compared to average long-term period. In 2018, various provinces were affected by climate events, so that the provinces with the highest ranking and most inclusive climate events including: Zanjan (heat wave), Bandar Abbas and Khorasan Razavi (cold wave), Gilan (heavy rainfall), Sistan and Baluchestan (dust and sandstorm), Lorestan (lightning).