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Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine. / Dubé, Kimberlee; Tegtmeier, Susann; Bourassa, Adam et al.
In: Communications Earth & Environment, Vol. 6, No. 1, 487, 20.06.2025.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Dubé, K, Tegtmeier, S, Bourassa, A, Laube, JC, Engel, A, Saunders, LN, Walker, KA, Hossaini, R & Bednarz, EM 2025, 'Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine', Communications Earth & Environment, vol. 6, no. 1, 487. https://doi.org/10.1038/s43247-025-02478-9

APA

Dubé, K., Tegtmeier, S., Bourassa, A., Laube, J. C., Engel, A., Saunders, L. N., Walker, K. A., Hossaini, R., & Bednarz, E. M. (2025). Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine. Communications Earth & Environment, 6(1), Article 487. https://doi.org/10.1038/s43247-025-02478-9

Vancouver

Dubé K, Tegtmeier S, Bourassa A, Laube JC, Engel A, Saunders LN et al. Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine. Communications Earth & Environment. 2025 Jun 20;6(1):487. doi: 10.1038/s43247-025-02478-9

Author

Dubé, Kimberlee ; Tegtmeier, Susann ; Bourassa, Adam et al. / Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine. In: Communications Earth & Environment. 2025 ; Vol. 6, No. 1.

Bibtex

@article{df6029faca5d4860a3ad681a16141dfb,
title = "Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine",
abstract = "Over the past few decades, a reduction in chlorinated long-lived ozone-depleting substance emissions due to the regulations imposed by the Montreal Protocol has led to a global decrease in stratospheric chlorine. At the same time, emissions of chlorinated Very Short-Lived Substances, which are unregulated, have increased. Here we show that observed changes of inorganic stratospheric chlorine are inconsistent with changes in the tropospheric abundances of long-lived ozone-depleting substances. Satellite observations of stratospheric chlorine species from the Atmospheric Chemistry Experiment—Fourier Transform Spectrometer during 2004–2020 reveal that the observed decrease in inorganic stratospheric chlorine is 25%–30% smaller than expected based on trends of long-lived ozone-depleting substances alone. At mid-latitudes in the lower stratosphere, this can be explained by the chlorinated Very Short-Lived Substances increase, which offsets the long-term reduction of stratospheric chlorine by up to 30%.",
author = "Kimberlee Dub{\'e} and Susann Tegtmeier and Adam Bourassa and Laube, {Johannes C.} and Andreas Engel and Saunders, {Laura N.} and Walker, {Kaley A.} and Ryan Hossaini and Bednarz, {Ewa M.}",
year = "2025",
month = jun,
day = "20",
doi = "10.1038/s43247-025-02478-9",
language = "English",
volume = "6",
journal = "Communications Earth & Environment",
issn = "2662-4435",
publisher = "Nature Research",
number = "1",

}

RIS

TY - JOUR

T1 - Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine

AU - Dubé, Kimberlee

AU - Tegtmeier, Susann

AU - Bourassa, Adam

AU - Laube, Johannes C.

AU - Engel, Andreas

AU - Saunders, Laura N.

AU - Walker, Kaley A.

AU - Hossaini, Ryan

AU - Bednarz, Ewa M.

PY - 2025/6/20

Y1 - 2025/6/20

N2 - Over the past few decades, a reduction in chlorinated long-lived ozone-depleting substance emissions due to the regulations imposed by the Montreal Protocol has led to a global decrease in stratospheric chlorine. At the same time, emissions of chlorinated Very Short-Lived Substances, which are unregulated, have increased. Here we show that observed changes of inorganic stratospheric chlorine are inconsistent with changes in the tropospheric abundances of long-lived ozone-depleting substances. Satellite observations of stratospheric chlorine species from the Atmospheric Chemistry Experiment—Fourier Transform Spectrometer during 2004–2020 reveal that the observed decrease in inorganic stratospheric chlorine is 25%–30% smaller than expected based on trends of long-lived ozone-depleting substances alone. At mid-latitudes in the lower stratosphere, this can be explained by the chlorinated Very Short-Lived Substances increase, which offsets the long-term reduction of stratospheric chlorine by up to 30%.

AB - Over the past few decades, a reduction in chlorinated long-lived ozone-depleting substance emissions due to the regulations imposed by the Montreal Protocol has led to a global decrease in stratospheric chlorine. At the same time, emissions of chlorinated Very Short-Lived Substances, which are unregulated, have increased. Here we show that observed changes of inorganic stratospheric chlorine are inconsistent with changes in the tropospheric abundances of long-lived ozone-depleting substances. Satellite observations of stratospheric chlorine species from the Atmospheric Chemistry Experiment—Fourier Transform Spectrometer during 2004–2020 reveal that the observed decrease in inorganic stratospheric chlorine is 25%–30% smaller than expected based on trends of long-lived ozone-depleting substances alone. At mid-latitudes in the lower stratosphere, this can be explained by the chlorinated Very Short-Lived Substances increase, which offsets the long-term reduction of stratospheric chlorine by up to 30%.

U2 - 10.1038/s43247-025-02478-9

DO - 10.1038/s43247-025-02478-9

M3 - Journal article

VL - 6

JO - Communications Earth & Environment

JF - Communications Earth & Environment

SN - 2662-4435

IS - 1

M1 - 487

ER -