The project will assist the Government of Tonga to fulfil reporting requirements under the United Nations Framework Convention on Climate Change (UNFCCC) by preparing its Fourth National Communication (4NC) in accordance with its commitments as a non-Annex 1 Party. Furthermore, the project will strengthen human and institutional capacities in preparing National Communications (NCs), on a continuous basis, while also raising general knowledge and promoting awareness on climate change issues. Within the 4NC component of the project, information will be compiled on national circumstances, inventories of greenhouse gases (GHG) up to 2022, programmes containing measures to mitigate climate change and facilitate adequate adaptation, constraints, gaps and related financial, technical, and capacity-building needs and any other information. Information generated under the project will be used to support the development and implementation of policies and actions for achieving the government’s national and international climate change commitments.