The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Atmospheric Chemistry and Physics
Open accessAbstract
A large discrepancy of at least 10 Gg yr −1 exists between reported emissions of the potent greenhouse gas HFC-23 (CHF 3 , trifluoromethane) and emissions derived from atmospheric measurements. In-atmosphere production of HFC-23 from the breakdown of fluorinated source gases such as hydrofluorocarbons (HFCs) and hydrofluoroolefins (HFOs) contributes to this gap, but only a conservative upper limit has been estimated for the magnitude of this source. This uncertainty is due, in part, to limited experimental measurements of the photolysis quantum yield of trifluoroacetaldehyde (CF 3 CHO), a key degradation product that forms HFC-23 via photolysis. The parameters governing CF 3 CHO deposition are also poorly understood. Here, we use a 3D chemistry and transport model, STOCHEM-CRI, to further constrain the magnitude of in-atmosphere HFC-23 production, using recent estimates of source gas emissions and explicitly parametrised photolysis and deposition. Furthermore, we perform an ensemble of simulations to account for the uncertainties in these values. We find that in-atmosphere production of HFC-23 is in the range 0.013-0.035 Gg yr −1 , substantially lower than previous estimates. This accounts for < 0.5 % of the discrepancy between reported and measurement-derived emissions, suggesting that this source makes a negligible contribution to the overall HFC-23 budget and that unreported direct emissions are likely responsible for the vast majority of the discrepancy. As part of this work, we also calculate indirect global warming potentials for the HFC-23 source gases HFO-1234ze(E), HFO-1336mzz(Z) and HCFO-1233zd(E) and find that their impact on climate is up to ten times higher than previously reported.
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van Marle, M. J. E., Kloster, S., Magi, B. I., Marlon, J. R., Daniau, A.-L., Field, R. D., Arneth, A., Forrest, M., Hantson, S., Kehrwald, N. M., et al. (2017) · Geoscientific Model Development · doi:10.5194/gmd-10-3329-2017 · Cited by 704
Liu, X., Ma, P.-L., Wang, H., Tilmes, S., Singh, B., Easter, R. C., Ghan, S. J., & Rasch, P. J. (2016) · Geoscientific Model Development · doi:10.5194/gmd-9-505-2016 · Cited by 671
Self-citationMurphy, D. M., Thomson, D. S., & Mahoney, M. J. (1998) · Science · doi:10.1126/science.282.5394.1664 · Cited by 571
Forster, P. M., Smith, C. J., Walsh, T., Lamb, W. F., Lamboll, R., Hauser, M., Ribes, A., Rosen, D., Gillett, N., Palmer, M. D., et al. (2023) · Earth System Science Data · doi:10.5194/essd-15-2295-2023 · Cited by 366
Understanding rapid adjustments to diverse forcing agents
Smith, C. J., Kramer, R. J., Myhre, G., Forster, P. M., Soden, B. J., Andrews, T., Boucher, O., Faluvegi, G., Fläschner, D., Hodnebrog, Ø., et al. (2018) · Geophysical Research Letters · doi:10.1029/2018gl079826 · Cited by 238
Bardeen, C. G., Toon, O. B., Jensen, E. J., Marsh, D. R., & Harvey, V. L. (2008) · Journal of Geophysical Research: Atmospheres · doi:10.1029/2007jd009515 · Cited by 217
Tonga eruption increases chance of temporary surface temperature anomaly above 1.5 °C
Jenkins, S., Smith, C., Allen, M., & Grainger, R. (2023) · Nature Climate Change · doi:10.1038/s41558-022-01568-2 · Cited by 97
Murphy, D. M., Froyd, K. D., Bourgeois, I., Brock, C. A., Kupc, A., Peischl, J., Schill, G. P., Thompson, C. R., Williamson, C. J., & Yu, P. (2021) · Atmospheric Chemistry and Physics · doi:10.5194/acp-21-8915-2021 · Cited by 84
Santee, M. L., Lambert, A., Manney, G. L., Livesey, N. J., Froidevaux, L., Neu, J. L., Schwartz, M. J., Millán, L. F., Werner, F., Read, W. G., et al. (2022) · Geophysical Research Letters · doi:10.1029/2021gl096270 · Cited by 48
Self-citationPersistent extreme ultraviolet irradiance in Antarctica despite the ozone recovery onset
Cordero, R. R., Feron, S., Damiani, A., Redondas, A., Carrasco, J., Sepúlveda, E., Jorquera, J., Fernandoy, F., Llanillo, P., Rowe, P. M., et al. (2022) · Scientific Reports · doi:10.1038/s41598-022-05449-8 · Cited by 47
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Stratospheric aerosol-Observations, processes, and impact on climate
Kremser, S., Thomason, L. W., von Hobe, M., Hermann, M., Deshler, T., Timmreck, C., Toohey, M., Stenke, A., Schwarz, J. P., Weigel, R., et al. (2016) · Reviews of Geophysics · doi:10.1002/2015rg000511 · Cited by 578
Metadata
- Publisher
- Copernicus GmbH
- Published
- 2017-02-13
- OpenAlex
- W4253868351
- Cited by
- 2,667
- References
- 10
- Type
- paratext
- Language
- en
- Open access
- gold
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