Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites

Minqiang Zhou; Bavo Langerock; Corinne Vigouroux; Dan Smale; Geoff Toon; Alexander Polyakov; James W. Hannigan; Johan Mellqvist; John Robinson; Justus Notholt; Kimberly Strong; Emmanuel Mahieu; Mathias Palm; Maxime Prignon; Nicolas Jones; Omaira García; Isamu Morino; Isao Murata; Ivan Ortega; Tomoo Nagahama; Tyler Wizenberg; Victoria Flood; Kaley Walker; Martine De Mazière

doi:10.1029/2024GL112470

Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites

Minqiang Zhou, Bavo Langerock, Corinne Vigouroux, Dan Smale, Geoff Toon, Alexander Polyakov, James W. Hannigan, Johan Mellqvist, John Robinson, Justus Notholt, Kimberly Strong, Emmanuel Mahieu, Mathias Palm, Maxime Prignon, Nicolas Jones, Omaira García, Isamu Morino, Isao Murata, Ivan Ortega, Tomoo NagahamaTyler Wizenberg, Victoria Flood, Kaley Walker, Martine De Mazière

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Abstract

HCFC-22 is an ozone-depleting substance with a greenhouse effect. The atmospheric mole fractions of HCFC-22 have been increasing since the 1950s. Within the NDACC-IRWG network, HCFC-22 mol fractions can be retrieved from solar absorption spectra measured by ground-based FTIR. However, only a few sites have provided HCFC-22 data sets. Here, we demonstrate a harmonized FTIR HCFC-22 retrieval strategy and generate a new global NDACC-IRWG HCFC-22 data set at 16 FTIR sites. The systematic and random uncertainties are 5.3%–8.7% and 3.2%–8.0%, respectively. A maximum HCFC-22 column annual growth rate was observed in 2009 with a mean of 7.65 ± 1.39 ppt/year, and the HCFC-22 annual growth rate decreased to 3.57 ± 1.39 ppt/year (2016–2020) and 2.15 ± 2.09 ppt/year (2021–2023). The annual growth rates derived from the FTIR measurements are compared to the ones derived from NOAA surface flask samplings and ACE-FTS satellite measurements, and the three independent data sets show a good agreement.

Original language	English
Article number	e2024GL112470
Journal	Geophysical Research Letters
Volume	51
Issue number	22
DOIs	https://doi.org/10.1029/2024GL112470
State	Published - Nov 28 2024
Externally published	Yes

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10.1029/2024GL112470

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Zhou, M., Langerock, B., Vigouroux, C., Smale, D., Toon, G., Polyakov, A., Hannigan, J. W., Mellqvist, J., Robinson, J., Notholt, J., Strong, K., Mahieu, E., Palm, M., Prignon, M., Jones, N., García, O., Morino, I., Murata, I., Ortega, I., ... De Mazière, M. (2024). Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites. Geophysical Research Letters, 51(22), Article e2024GL112470. https://doi.org/10.1029/2024GL112470

@article{5eafa01236e3476bbcdec0d02339864d,

title = "Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites",

abstract = "HCFC-22 is an ozone-depleting substance with a greenhouse effect. The atmospheric mole fractions of HCFC-22 have been increasing since the 1950s. Within the NDACC-IRWG network, HCFC-22 mol fractions can be retrieved from solar absorption spectra measured by ground-based FTIR. However, only a few sites have provided HCFC-22 data sets. Here, we demonstrate a harmonized FTIR HCFC-22 retrieval strategy and generate a new global NDACC-IRWG HCFC-22 data set at 16 FTIR sites. The systematic and random uncertainties are 5.3\%–8.7\% and 3.2\%–8.0\%, respectively. A maximum HCFC-22 column annual growth rate was observed in 2009 with a mean of 7.65 ± 1.39 ppt/year, and the HCFC-22 annual growth rate decreased to 3.57 ± 1.39 ppt/year (2016–2020) and 2.15 ± 2.09 ppt/year (2021–2023). The annual growth rates derived from the FTIR measurements are compared to the ones derived from NOAA surface flask samplings and ACE-FTS satellite measurements, and the three independent data sets show a good agreement.",

author = "Minqiang Zhou and Bavo Langerock and Corinne Vigouroux and Dan Smale and Geoff Toon and Alexander Polyakov and Hannigan, \{James W.\} and Johan Mellqvist and John Robinson and Justus Notholt and Kimberly Strong and Emmanuel Mahieu and Mathias Palm and Maxime Prignon and Nicolas Jones and Omaira Garc{\'i}a and Isamu Morino and Isao Murata and Ivan Ortega and Tomoo Nagahama and Tyler Wizenberg and Victoria Flood and Kaley Walker and \{De Mazi{\`e}re\}, Martine",

note = "Publisher Copyright: {\textcopyright} 2024. The Author(s).",

year = "2024",

month = nov,

day = "28",

doi = "10.1029/2024GL112470",

language = "English",

volume = "51",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley and Sons Inc.",

number = "22",

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Zhou, M, Langerock, B, Vigouroux, C, Smale, D, Toon, G, Polyakov, A, Hannigan, JW, Mellqvist, J, Robinson, J, Notholt, J, Strong, K, Mahieu, E, Palm, M, Prignon, M, Jones, N, García, O, Morino, I, Murata, I, Ortega, I, Nagahama, T, Wizenberg, T, Flood, V, Walker, K & De Mazière, M 2024, 'Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites', Geophysical Research Letters, vol. 51, no. 22, e2024GL112470. https://doi.org/10.1029/2024GL112470

TY - JOUR

T1 - Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites

AU - Zhou, Minqiang

AU - Langerock, Bavo

AU - Vigouroux, Corinne

AU - Smale, Dan

AU - Toon, Geoff

AU - Polyakov, Alexander

AU - Hannigan, James W.

AU - Mellqvist, Johan

AU - Robinson, John

AU - Notholt, Justus

AU - Strong, Kimberly

AU - Mahieu, Emmanuel

AU - Palm, Mathias

AU - Prignon, Maxime

AU - Jones, Nicolas

AU - García, Omaira

AU - Morino, Isamu

AU - Murata, Isao

AU - Ortega, Ivan

AU - Nagahama, Tomoo

AU - Wizenberg, Tyler

AU - Flood, Victoria

AU - Walker, Kaley

AU - De Mazière, Martine

PY - 2024/11/28

Y1 - 2024/11/28

N2 - HCFC-22 is an ozone-depleting substance with a greenhouse effect. The atmospheric mole fractions of HCFC-22 have been increasing since the 1950s. Within the NDACC-IRWG network, HCFC-22 mol fractions can be retrieved from solar absorption spectra measured by ground-based FTIR. However, only a few sites have provided HCFC-22 data sets. Here, we demonstrate a harmonized FTIR HCFC-22 retrieval strategy and generate a new global NDACC-IRWG HCFC-22 data set at 16 FTIR sites. The systematic and random uncertainties are 5.3%–8.7% and 3.2%–8.0%, respectively. A maximum HCFC-22 column annual growth rate was observed in 2009 with a mean of 7.65 ± 1.39 ppt/year, and the HCFC-22 annual growth rate decreased to 3.57 ± 1.39 ppt/year (2016–2020) and 2.15 ± 2.09 ppt/year (2021–2023). The annual growth rates derived from the FTIR measurements are compared to the ones derived from NOAA surface flask samplings and ACE-FTS satellite measurements, and the three independent data sets show a good agreement.

AB - HCFC-22 is an ozone-depleting substance with a greenhouse effect. The atmospheric mole fractions of HCFC-22 have been increasing since the 1950s. Within the NDACC-IRWG network, HCFC-22 mol fractions can be retrieved from solar absorption spectra measured by ground-based FTIR. However, only a few sites have provided HCFC-22 data sets. Here, we demonstrate a harmonized FTIR HCFC-22 retrieval strategy and generate a new global NDACC-IRWG HCFC-22 data set at 16 FTIR sites. The systematic and random uncertainties are 5.3%–8.7% and 3.2%–8.0%, respectively. A maximum HCFC-22 column annual growth rate was observed in 2009 with a mean of 7.65 ± 1.39 ppt/year, and the HCFC-22 annual growth rate decreased to 3.57 ± 1.39 ppt/year (2016–2020) and 2.15 ± 2.09 ppt/year (2021–2023). The annual growth rates derived from the FTIR measurements are compared to the ones derived from NOAA surface flask samplings and ACE-FTS satellite measurements, and the three independent data sets show a good agreement.

UR - https://www.scopus.com/pages/publications/85209119305

U2 - 10.1029/2024GL112470

DO - 10.1029/2024GL112470

M3 - Article

AN - SCOPUS:85209119305

SN - 0094-8276

VL - 51

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 22

M1 - e2024GL112470

ER -

Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites

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