2025-12-03 ゲーテ大学
＜関連情報＞
- https://aktuelles.uni-frankfurt.de/english/24000-times-more-harmful-to-the-climate-than-co2-goethe-university-measurements-reveal-sf6-gas-emissions-in-germany/
- https://pubs.acs.org/doi/10.1021/acsestair.5c00234
ドイツのSF6排出量の特性評価 Characterization of German SF6 Emissions
Katharina Meixner,Thomas Wagenhäuser,Tanja J. Schuck,Sascha Alber,Alistair J. Manning,Alison L. Redington,Kieran M. Stanley,Simon O’Doherty,Dickon Young,Joseph Pitt,Angelina Wenger,Arnoud Frumau,Ann R. Stavert,Christopher Rennick,Martin K. Vollmer,Michela Maione,Jgor Arduini,Chris R. Lunder,Cedric Couret,Armin Jordan,Xochilt Gutiérrez Gutiérrez,Dagmar Kubistin,Jennifer Müller-Williams,Matthias Lindauer,Martin Vojta,Andreas Stohl,and Andreas Engel
ACS ES&T Air Published November 6, 2025
DOI:https://doi.org/10.1021/acsestair.5c00234
Abstract
Sulfur hexafluoride (SF6) is a highly potent greenhouse gas with a Global Warming Potential (GWP) of 24,700 over 100 years and is globally mainly used as an electrical insulator in switchgear. Several measurement networks have tracked SF6 for many years and their European data reveal significant emissions in southern Germany. This study focuses on German SF6 emissions (2020–2023), using atmospheric measurements from 22 European sites, offering high spatial and temporal resolution for robust emission assessments. While German UNFCCC inventory bottom-up emission estimates report a major source of SF6 through the disposal of soundproof windows, the spatial distribution of German SF6 emissions derived on top-down inversion techniques (InTEM and Flexinvert+) reveals a different picture: The continuous pattern of high emissions from a particular region is responsible for one-third of total SF6 emissions in Germany. Despite this, total German SF6 emissions have decreased from 112 ± 26 t in 2020 to 89 ± 15 t in 2023 (InTEM), with estimates from all methods (both bottom-up and top-down) showing similar trends. Our findings suggest that the emissions from soundproof windows are overestimated, while industrial sources – particularly from SF6 production and recycling in the focus region – are likely underestimated.
