World Meteorological Day 2017 will be celebrated around the theme 'Understanding Clouds' to highlight the enormous importance of clouds for weather climate and water. Clouds are central to weather observations and forecasts. Clouds are one of the key uncertainties in the study of climate change: we need to better understand how clouds affect the climate and how a changing climate will affect clouds. Clouds play a critical role in the water cycle and shaping the global distribution of water resources. The Day will mark the launch of a new edition of the World Meteorological Organization's (WMO) International Cloud Atlas after the most thorough and far-reaching revision in its history. Also on 23 March, the President of the UN General Assembly (UNGA) will convene a High-Level Event titled, 'Climate Change and the Sustainable Development Agenda,' in collaboration with the Secretariat of the UN Framework Convention on Climate Change (UNFCCC). This event will provide an opportunity to highlight synergies between climate change and the 2030 Agenda and to gather representatives from governments, international organizations, the private sector and other stakeholders who are advancing solutions to implementation of the SDGs and climate change agreements.  

date: 23 March 2017  
location: worldwide  
contact: WMO  
www: https://public.wmo.int/en/WorldMetDay2017