期刊
GEOPHYSICAL RESEARCH LETTERS
卷 42, 期 5, 页码 1606-1611出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2014GL062785
关键词
climate change; greenhouse gases; global warming; atmospheric chemistry
资金
- European FP7 Infrastructure Project Integrated Non-CO2 Greenhouse gas Observing System (InGOS)
- project HALCLIM by the Swiss Federal Office for the Environment (FOEN)
- Swiss State Secretariat for Education and Research and Innovation (SERI)
- National Research Foundation of Korea for the Korean-Swiss Science and Technology Cooperation Program
- International Foundation High Altitude Research Stations Jungfraujoch and Gornergrat (HFSJG)
- European Metrology Research Programme ENV52 project Metrology for high-impact greenhouse gases (HIGHGAS)
- UK Natural Environment Research Council (NERC) [NE/1021365/1]
- Korean Polar Research Program [PE13410]
- Korea Institute of Marine Science & Technology Promotion (KIMST) [PE13080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Natural Environment Research Council [NE/L013088/1, NE/I021365/1] Funding Source: researchfish
- NERC [NE/I021365/1, NE/L013088/1] Funding Source: UKRI
Modern halogenated inhalation anesthetics undergo little metabolization during clinical application and evaporate almost completely to the atmosphere. Based on their first measurements in a range of environments, from urban areas to the pristine Antarctic environment, we detect a rapid accumulation and ubiquitous presence of isoflurane, desflurane, and sevoflurane in the global atmosphere. Over the past decade, their abundances in the atmosphere have increased to global mean mole fractions in 2014 of 0.097ppt, 0.30ppt, and 0.13ppt (parts per trillion, 10(-12), in dry air), respectively. Emissions of these long-lived greenhouse gases inferred from the observations suggest a global combined release to the atmosphere of 3.1 0.6 million t CO2 equivalent in 2014 of which approximate to 80% stems from desflurane. We also report on halothane, a previously widely used anesthetic. Its global mean mole fraction has declined to 9.2ppq (parts per quadrillion, 10(-15)) by 2014. However, the inferred present usage is still 280 120t yr(-1)
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