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
et al.
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 a… Show more
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