More information is available in the report UK Greenhouse Gas Inventory, 1990 to 2019 (Department for Environment, Food & Rural Affairs).
Mae rhagor o wybodaeth ar gael yn yr adroddiad Rhestr Nwyon Tŷ Gwydr y DU, 1990 i 2019 (Adran yr Amgylchedd, Bwyd a Materion Gwledig)