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Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone

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Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. / Hossaini, R.; Chipperfield, M. P.; Montzka, S. A.; Rap, A.; Dhomse, S.; Feng, W.

In: Nature Geoscience, Vol. 8, No. 3, 03.2015, p. 186-190.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Hossaini, R, Chipperfield, MP, Montzka, SA, Rap, A, Dhomse, S & Feng, W 2015, 'Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone', Nature Geoscience, vol. 8, no. 3, pp. 186-190. https://doi.org/10.1038/NGEO2363

APA

Hossaini, R., Chipperfield, M. P., Montzka, S. A., Rap, A., Dhomse, S., & Feng, W. (2015). Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. Nature Geoscience, 8(3), 186-190. https://doi.org/10.1038/NGEO2363

Vancouver

Hossaini R, Chipperfield MP, Montzka SA, Rap A, Dhomse S, Feng W. Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. Nature Geoscience. 2015 Mar;8(3):186-190. https://doi.org/10.1038/NGEO2363

Author

Hossaini, R. ; Chipperfield, M. P. ; Montzka, S. A. ; Rap, A. ; Dhomse, S. ; Feng, W. / Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. In: Nature Geoscience. 2015 ; Vol. 8, No. 3. pp. 186-190.

Bibtex

@article{846f732c63b84d5d95998576b554032d,
title = "Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone",
abstract = "Halogens released from long-lived anthropogenic substances, such as chlorofluorocarbons, are the principal cause of recent depletion of stratospheric ozone, a greenhouse gas(1-3). Recent observations show that very short-lived substances, with lifetimes generally under six months, are also an important source of stratospheric halogens(4,5). Short-lived bromine substances are produced naturally by seaweed and phytoplankton, whereas short-lived chlorine substances are primarily anthropogenic. Here we used a chemical transport model to quantify the depletion of ozone in the lower stratosphere from short-lived halogen substances, and a radiative transfer model to quantify the radiative effects of that ozone depletion. According to our simulations, ozone loss from short-lived substances had a radiative effect nearly half that from long-lived halocarbons in 2011 and, since pre-industrial times, has contributed a total of about -0.02 W m(-2) to global radiative forcing. We find natural short-lived bromine substances exert a 3.6 times larger ozone radiative effect than long-lived halocarbons, normalized by halogen content, and show atmospheric levels of dichloromethane, a short-lived chlorine substance not controlled by the Montreal Protocol, are rapidly increasing. We conclude that potential further significant increases in the atmospheric abundance of short-lived halogen substances, through changing natural processes(6-8) or continued anthropogenic emissions(9), could be important for future climate.",
keywords = "BROMINE, TROPOSPHERE, EMISSIONS, IODINE, SUBSTANCES, TRENDS, IMPACT, MODEL",
author = "R. Hossaini and Chipperfield, {M. P.} and Montzka, {S. A.} and A. Rap and S. Dhomse and W. Feng",
year = "2015",
month = mar,
doi = "10.1038/NGEO2363",
language = "English",
volume = "8",
pages = "186--190",
journal = "Nature Geoscience",
issn = "1752-0894",
publisher = "Nature Publishing Group",
number = "3",

}

RIS

TY - JOUR

T1 - Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone

AU - Hossaini, R.

AU - Chipperfield, M. P.

AU - Montzka, S. A.

AU - Rap, A.

AU - Dhomse, S.

AU - Feng, W.

PY - 2015/3

Y1 - 2015/3

N2 - Halogens released from long-lived anthropogenic substances, such as chlorofluorocarbons, are the principal cause of recent depletion of stratospheric ozone, a greenhouse gas(1-3). Recent observations show that very short-lived substances, with lifetimes generally under six months, are also an important source of stratospheric halogens(4,5). Short-lived bromine substances are produced naturally by seaweed and phytoplankton, whereas short-lived chlorine substances are primarily anthropogenic. Here we used a chemical transport model to quantify the depletion of ozone in the lower stratosphere from short-lived halogen substances, and a radiative transfer model to quantify the radiative effects of that ozone depletion. According to our simulations, ozone loss from short-lived substances had a radiative effect nearly half that from long-lived halocarbons in 2011 and, since pre-industrial times, has contributed a total of about -0.02 W m(-2) to global radiative forcing. We find natural short-lived bromine substances exert a 3.6 times larger ozone radiative effect than long-lived halocarbons, normalized by halogen content, and show atmospheric levels of dichloromethane, a short-lived chlorine substance not controlled by the Montreal Protocol, are rapidly increasing. We conclude that potential further significant increases in the atmospheric abundance of short-lived halogen substances, through changing natural processes(6-8) or continued anthropogenic emissions(9), could be important for future climate.

AB - Halogens released from long-lived anthropogenic substances, such as chlorofluorocarbons, are the principal cause of recent depletion of stratospheric ozone, a greenhouse gas(1-3). Recent observations show that very short-lived substances, with lifetimes generally under six months, are also an important source of stratospheric halogens(4,5). Short-lived bromine substances are produced naturally by seaweed and phytoplankton, whereas short-lived chlorine substances are primarily anthropogenic. Here we used a chemical transport model to quantify the depletion of ozone in the lower stratosphere from short-lived halogen substances, and a radiative transfer model to quantify the radiative effects of that ozone depletion. According to our simulations, ozone loss from short-lived substances had a radiative effect nearly half that from long-lived halocarbons in 2011 and, since pre-industrial times, has contributed a total of about -0.02 W m(-2) to global radiative forcing. We find natural short-lived bromine substances exert a 3.6 times larger ozone radiative effect than long-lived halocarbons, normalized by halogen content, and show atmospheric levels of dichloromethane, a short-lived chlorine substance not controlled by the Montreal Protocol, are rapidly increasing. We conclude that potential further significant increases in the atmospheric abundance of short-lived halogen substances, through changing natural processes(6-8) or continued anthropogenic emissions(9), could be important for future climate.

KW - BROMINE

KW - TROPOSPHERE

KW - EMISSIONS

KW - IODINE

KW - SUBSTANCES

KW - TRENDS

KW - IMPACT

KW - MODEL

U2 - 10.1038/NGEO2363

DO - 10.1038/NGEO2363

M3 - Journal article

VL - 8

SP - 186

EP - 190

JO - Nature Geoscience

JF - Nature Geoscience

SN - 1752-0894

IS - 3

ER -