An upscaling of methane emissions from Swedish flooded land

The 2019 IPCC Refinement updated reporting guidelines for greenhouse gas (GHG) emissions (predominantly methane; CH4) from “flooded land”; reservoirs, ponds, and drainage ditches/canals. These waterbodies are created by humans and thus their GHG emissions are considered anthropogenic. Here, we consi...

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Main Authors: Mike Peacock, Martyn N. Futter, William Lidberg, Mattias Lundblad, Pia Geranmayeh
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Carbon Management
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/17583004.2024.2445254
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author Mike Peacock
Martyn N. Futter
William Lidberg
Mattias Lundblad
Pia Geranmayeh
author_facet Mike Peacock
Martyn N. Futter
William Lidberg
Mattias Lundblad
Pia Geranmayeh
author_sort Mike Peacock
collection DOAJ
description The 2019 IPCC Refinement updated reporting guidelines for greenhouse gas (GHG) emissions (predominantly methane; CH4) from “flooded land”; reservoirs, ponds, and drainage ditches/canals. These waterbodies are created by humans and thus their GHG emissions are considered anthropogenic. Here, we consider the implications of accounting for flooded land emissions in the Swedish national GHG inventory. We collate relevant Swedish GHG data for reservoirs, ponds and ditches, and combine these, and IPCC emission factors (EFs), with estimates of total waterbody surface area to upscale emissions. We find flooded lands emit a national total of 34,000 t CH4 yr−1 using IPCC EFs, or 14,000 t CH4 yr−1 when using EFs derived from Swedish data only, equivalent to 19% and 8% of national CH4 emissions. Cumulatively, reservoirs cover the largest surface area (71% of total flooded land), followed by ditches (26%) and ponds (3%). However, using IPCC EFs, ditch emissions dominate the budget, emitting 28,700 t CH4 yr−1 compared to ∼1,700 t CH4 yr−1 for ponds and 3,400 t CH4 yr−1 for reservoirs. Our findings show that ditches may make outsized contributions to national emissions, and that default IPCC EFs may be inappropriately high for GHG accounting in Sweden, and presumably other northern nations.
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spelling doaj-art-b22c83ca5098416ebb9ed0ebc5181f142024-12-26T16:38:14ZengTaylor & Francis GroupCarbon Management1758-30041758-30122025-12-0116110.1080/17583004.2024.2445254An upscaling of methane emissions from Swedish flooded landMike Peacock0Martyn N. Futter1William Lidberg2Mattias Lundblad3Pia Geranmayeh4Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, SwedenDepartment of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, SwedenDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, SwedenDepartment of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, SwedenDepartment of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, SwedenThe 2019 IPCC Refinement updated reporting guidelines for greenhouse gas (GHG) emissions (predominantly methane; CH4) from “flooded land”; reservoirs, ponds, and drainage ditches/canals. These waterbodies are created by humans and thus their GHG emissions are considered anthropogenic. Here, we consider the implications of accounting for flooded land emissions in the Swedish national GHG inventory. We collate relevant Swedish GHG data for reservoirs, ponds and ditches, and combine these, and IPCC emission factors (EFs), with estimates of total waterbody surface area to upscale emissions. We find flooded lands emit a national total of 34,000 t CH4 yr−1 using IPCC EFs, or 14,000 t CH4 yr−1 when using EFs derived from Swedish data only, equivalent to 19% and 8% of national CH4 emissions. Cumulatively, reservoirs cover the largest surface area (71% of total flooded land), followed by ditches (26%) and ponds (3%). However, using IPCC EFs, ditch emissions dominate the budget, emitting 28,700 t CH4 yr−1 compared to ∼1,700 t CH4 yr−1 for ponds and 3,400 t CH4 yr−1 for reservoirs. Our findings show that ditches may make outsized contributions to national emissions, and that default IPCC EFs may be inappropriately high for GHG accounting in Sweden, and presumably other northern nations.https://www.tandfonline.com/doi/10.1080/17583004.2024.2445254Freshwatersinland watersgreenhouse gasesreservoirspondsditches
spellingShingle Mike Peacock
Martyn N. Futter
William Lidberg
Mattias Lundblad
Pia Geranmayeh
An upscaling of methane emissions from Swedish flooded land
Carbon Management
Freshwaters
inland waters
greenhouse gases
reservoirs
ponds
ditches
title An upscaling of methane emissions from Swedish flooded land
title_full An upscaling of methane emissions from Swedish flooded land
title_fullStr An upscaling of methane emissions from Swedish flooded land
title_full_unstemmed An upscaling of methane emissions from Swedish flooded land
title_short An upscaling of methane emissions from Swedish flooded land
title_sort upscaling of methane emissions from swedish flooded land
topic Freshwaters
inland waters
greenhouse gases
reservoirs
ponds
ditches
url https://www.tandfonline.com/doi/10.1080/17583004.2024.2445254
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