Research output: Contribution to journal › Article
Rapid increase in ozone-depleting chloroform emissions from China. / Fang, Xuekun; Park, Sunyoung; Saito, Takuya; Tunnicliffe, Rachel; Ganesan, Anita L.; Rigby, Matthew; Li, Shanlan; Yokouchi, Yoko; Fraser, Paul J.; Harth, Christina M.; Krummel, Paul B.; Mühle, Jens; O’Doherty, Simon; Salameh, Peter K.; Simmonds, Peter G.; Weiss, Ray F.; Young, Dickon; Lunt, Mark F.; Manning, Alistair J.; Gressent, Alicia; Prinn, Ronald G.
In: Nature Geoscience, Vol. 12, No. 2, 02.2019, p. 89-93.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Rapid increase in ozone-depleting chloroform emissions from China
AU - Fang, Xuekun
AU - Park, Sunyoung
AU - Saito, Takuya
AU - Tunnicliffe, Rachel
AU - Ganesan, Anita L.
AU - Rigby, Matthew
AU - Li, Shanlan
AU - Yokouchi, Yoko
AU - Fraser, Paul J.
AU - Harth, Christina M.
AU - Krummel, Paul B.
AU - Mühle, Jens
AU - O’Doherty, Simon
AU - Salameh, Peter K.
AU - Simmonds, Peter G.
AU - Weiss, Ray F.
AU - Young, Dickon
AU - Lunt, Mark F.
AU - Manning, Alistair J.
AU - Gressent, Alicia
AU - Prinn, Ronald G.
PY - 2019/2
Y1 - 2019/2
N2 - Chloroform contributes to the depletion of the stratospheric ozone layer. However, due to its short lifetime and predominantly natural sources, it is not included in the Montreal Protocol that regulates the production and uses of ozone-depleting substances. Atmospheric chloroform mole fractions were relatively stable or slowly decreased during 1990–2010. Here we show that global chloroform mole fractions increased after 2010, based on in situ chloroform measurements at seven stations around the world. We estimate that the global chloroform emissions grew at the rate of 3.5% yr−1 between 2010 and 2015 based on atmospheric model simulations. We used two regional inverse modelling approaches, combined with observations from East Asia, to show that emissions from eastern China grew by 49 (41–59) Gg between 2010 and 2015, a change that could explain the entire increase in global emissions. We suggest that if chloroform emissions continuously grow at the current rate, the recovery of the stratospheric ozone layer above Antarctica could be delayed by several years.
AB - Chloroform contributes to the depletion of the stratospheric ozone layer. However, due to its short lifetime and predominantly natural sources, it is not included in the Montreal Protocol that regulates the production and uses of ozone-depleting substances. Atmospheric chloroform mole fractions were relatively stable or slowly decreased during 1990–2010. Here we show that global chloroform mole fractions increased after 2010, based on in situ chloroform measurements at seven stations around the world. We estimate that the global chloroform emissions grew at the rate of 3.5% yr−1 between 2010 and 2015 based on atmospheric model simulations. We used two regional inverse modelling approaches, combined with observations from East Asia, to show that emissions from eastern China grew by 49 (41–59) Gg between 2010 and 2015, a change that could explain the entire increase in global emissions. We suggest that if chloroform emissions continuously grow at the current rate, the recovery of the stratospheric ozone layer above Antarctica could be delayed by several years.
UR - http://www.scopus.com/inward/record.url?scp=85059009143&partnerID=8YFLogxK
U2 - 10.1038/s41561-018-0278-2
DO - 10.1038/s41561-018-0278-2
M3 - Article
VL - 12
SP - 89
EP - 93
JO - Nature Geoscience
JF - Nature Geoscience
SN - 1752-0894
IS - 2
ER -