A new edition of the International Cloud Atlas is scheduled to be released simultaneously with this Bulletin following three years of hard work.
The World Climate Research Programme (WCRP) Coupled Model Intercomparison Project (CMIP) serves as a fundamental basis for international climate research. The process represents a remarkable technical and scientific coordination effort across dozens of climate modelling centres, involving some 1 000 or more researchers.
Those who question the importance of climate change sometimes claim that reducing carbon dioxide (CO2) emissions into the atmosphere will have a very limited effect, because water vapour is the most dominant greenhouse gas. If that is the case, they wonder why bother so much about CO2 and other greenhouse gases? Observations by the WMO Global Atmosphere Watch programme have helped to investigate this in some detail.
The management of weather and climate risks in agriculture has become an important issue due to climate change. The Intergovernmental Panel on Climate Change (IPCC) has highlighted multiple climate risks for agriculture and food security as well as the potential of improved weather and climate early warning systems to assist farmers. Wise use of weather and climate information can help to make better-informed policy, institutional and community decisions that reduce related risks and enhance opportunities, improve the efficient use of limited resources and increase crop, livestock and fisheries production. National Meteorological and Hydrological Services (NMHSs) have an important role to play in providing this weather and climate information to farmers, big and small.
Efforts to reduce fuel burn and thus carbon dioxide (CO2) emissions in aviation over the past four decades have been impressive. Operational measures in line with new air traffic management systems, as well as new technological concepts, all have the potential to continue reducing these CO2 emissions. The Commission for Aeronautical Meteorology (CAeM) supports aviation stakeholders in their efforts to operate under changing climate conditions.
One certainty about sustainable development is that it will not be possible without taking climate change into account. And if there is a certainty about climate change, it is that humanity will not adapt to it without taking into account water resources management. In September 2015 when 193 countries at the United Nations adopted the 2030 Agenda for Sustainable Development and its Sustainable Development Goals (SDGs) these two certainties so greatly influenced decision-making that goal #6 was dedicated to water. SDG #6 is not only about the urgent need for clean water and sanitation for everyone. It encompasses the full range of issues around managing water resources, including the work of the Global Water Partnership (GWP) for an integrated approach to water use by all economic sectors.