The TC and the PTC undertake original research and pilot projects to further improve the understanding of tropical cyclones and related hazards. Developed as part of the IOTWS, these networks share data regionally and globally in near real time. Tie boundaries and names shown and the designations used on this map do not imply official endorsement or acceptance by the United Nations. These centres operate within the framework of the WMO’s World Weather Watch Programme and support countries with analysis, forecasting and training especially those with limited domestic capacity.