Research output: Contribution to journal › Article › peer-review
Recent Decreases in the Growth Rate of Atmospheric HCFC-22 Column Derived From the Ground-Based FTIR Harmonized Retrievals at 16 NDACC Sites. / Поляков, Александр Викторович; Zhou, Minqiang; Langerock, Bavo; Vigouroux, Corinne; Smale, Dan; Toon, Geoffrey; Hannigan, James W.; Mellqvist, Johan ; Robinson, John; Notholt, Justus; Strong, Kimberly; Mahieu, Emmanuel; Palm, Mathias; Prignon, Maxime; Jones, Nicolas; García, Omaira; Morino, Isamu; Murata, Isao; Ortega, Ivan; Nagahama, Tomoo; Wizenberg, Tyler; Flood, Victoria; Walker, Kaley ; De Mazière, Martine.
In: Geophysical Research Letters, Vol. 51, No. 22, e2024GL112470, 14.11.2024.Research output: Contribution to journal › Article › peer-review
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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 - Поляков, Александр Викторович
AU - Zhou, Minqiang
AU - Langerock, Bavo
AU - Vigouroux, Corinne
AU - Smale, Dan
AU - Toon, Geoffrey
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 - 2024/11/14
Y1 - 2024/11/14
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.
U2 - 10.1029/2024GL112470
DO - 10.1029/2024GL112470
M3 - Article
VL - 51
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 22
M1 - e2024GL112470
ER -
ID: 127174190