The National Greenhouse Gas Inventory Report for 1990-2019 has been developed in fulfillment of the biennial greenhouse gas emissions’ accountability requirement under the coordination of the Ministry of Environment of the Republic of Armenia within the framework of the UNDP-GEF “Building Armenia’s National Transparency Framework under Paris Agreement” project. “Hydrometeorology and Monitoring Center” SNCO of the RA Ministry of Environment has contributed to the Inventory development.