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Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons

Cited 6 time in wos
Cited 6 time in scopus
Title
Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons
Other Titles
오존을 파괴하는 수소화불화탄소화합물들의 예측하지 못한 대기중의 배출
Authors
Vollmer, Martin K.
Muhle, Jens
Henne, Stephan
Young, Dickon
Rigby, Matthew
Mitrevski, Blagoj
Park, Sunyoung
Lunder, Chris R.
Rhee, Tae Siek
Harth, Christina M.
Hill, Matthias
Langenfelds, Ray L.
Guillevic, Myriam
Schlauri, Paul M.
Hermansen, Ove
Arduini, Jgor
Wang, Ray H. J.
Salameh, Peter K.
Maione, Michela
Krummel, Paul B.
Reimann, Stefan
O'Doherty, Simon
Simmonds, Peter G.
Fraser, Paul J.
Prinn, Ronald G.
Weiss, Ray F.
Steele, L. Paul
Subject
Science & Technology - Other Topics
Keywords
Montreal Protocolatmospheric compositionozone depletion
Issue Date
2021-02-02
Citation
Vollmer, Martin K., et al. 2021. "Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons". PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 118(5): 1-7.
Abstract
Global and regional atmospheric measurements and modeling can play key roles in discovering and quantifying unexpected nascent emissions of environmentally important substances. We focus here on three hydrochlorofluorocarbons (HCFCs) that are restricted by the Montreal Protocol because of their roles in strato spheric ozone depletion. Based on measurements of archived air samples and on in situ measurements at stations of the Advanced Global Atmospheric Gases Experiment (AGAGE) network, we report global abundances, trends, and regional enhancements for HCFC-132b (CH2ClCClF2), which is newly discovered in the atmosphere, and updated results for HCFC-133a (CH2ClCF3) and HCFC-31 (CH2ClF). No purposeful end-use is known for any of these compounds. We find that HCFC-132b appeared in the atmosphere 20 y ago and that its global emissions increased to 1.1 Gg·y ?1 by 2019. Regional top-down emission estimates for East Asia, based on high-frequency measurements for 2016? 2019, account for ∼95% of the global HCFC-132b emissions and for ∼80% of the global HCFC-133a emissions of 2.3 Gg·y ?1 during this period. Global emissions of HCFC-31 for the same period are 0.71 Gg·y ?1 . Small European emissions of HCFC-132b and HCFC-133a, found in southeastern France, ceased in early 2017 when a fluorocarbon production facility in that area closed. Although unreported emissive end-uses cannot be ruled out, all three compounds are most likely emitted as intermediate by-products in chemical production pathways. Identification of harmful emissions to the atmosphere at an early stage can guide the effective development of global and regional environmental policy.
URI
https://repository.kopri.re.kr/handle/201206/13617
DOI
http://dx.doi.org/10.1073/pnas.2010914118
Type
Article
Station
King Sejong Station
Indexed
SCIE
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