Stratospheric Fluorine as a Tracer of Circulation Changes:Comparison Between Infrared Remote-Sensing Observations and Simulations With Five Modern Reanalyses
| العنوان: | Stratospheric Fluorine as a Tracer of Circulation Changes:Comparison Between Infrared Remote-Sensing Observations and Simulations With Five Modern Reanalyses |
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| المؤلفون: | Martyn P. Chipperfield, Marina Friedrich, Peter F. Bernath, Maxime Prignon, Christian Servais, Emmanuel Mahieu, Susan E. Strahan, Dan Smale, Simon Chabrillat, Daniele Minganti, Sandip Dhomse, Wuhu Feng |
| المساهمون: | Econometrics and Data Science, Tinbergen Institute |
| المصدر: | Prignon, M, Chabrillat, S, Friedrich, M, Smale, D, Strahan, S E, Bernath, P F, Chipperfield, M P, Dhomse, S S, Feng, W, Minganti, D, Servais, C & Mahieu, E 2021, ' Stratospheric Fluorine as a Tracer of Circulation Changes : Comparison Between Infrared Remote-Sensing Observations and Simulations With Five Modern Reanalyses ', Journal of Geophysical Research: Atmospheres, vol. 126, no. 19, e2021JD034995, pp. 1-24 . https://doi.org/10.1029/2021JD034995 Journal of Geophysical Research: Atmospheres, 126(19):e2021JD034995, 1-24. American Geophysical Union |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | trends, Atmospheric Science, stratospheric transport, circulation changes, Infrared remote sensing, Northern Hemisphere, chemistry.chemical_element, Geophysics, Circulation (fluid dynamics), chemistry, Space and Planetary Science, Climatology, TRACER, Hemispheric asymmetry, Earth and Planetary Sciences (miscellaneous), Fluorine, Environmental science, Satellite, Brewer-Dobson circulation, Southern Hemisphere |
| الوصف: | Using multidecadal time series of ground-based and satellite Fourier transform infrared measurements of inorganic fluorine (i.e., total fluorine resident in stratospheric fluorine reservoirs), we investigate stratospheric circulation changes over the past 20 years. The representation of these changes in five modern reanalyses is further analyzed through chemical-transport model (CTM) simulations. From the observations but also from all reanalyses, we show that the inorganic fluorine is accumulating less rapidly in the Southern Hemisphere than in the Northern Hemisphere during the 21st century. Comparisons with a study evaluating the age-of-air of these reanalyses using the same CTM allow us to link this hemispheric asymmetry to changes in the Brewer-Dobson circulation (BDC), with the age-of-air of the Southern Hemisphere getting younger relative to that of the Northern Hemisphere. Large differences in simulated total columns and absolute trend values are, nevertheless, depicted between our simulations driven by the five reanalyses. Superimposed on this multidecadal change, we, furthermore, confirm a 5–7-year variability of the BDC that was first described in a recent study analyzing long-term time series of hydrogen chloride (HCl) and nitric acid (HNO3). It is important to stress that our results, based on observations and meteorological reanalyses, are in contrast with the projections of chemistry-climate models in response to the coupled increase of greenhouse gases and decrease of ozone-depleting substances, calling for further investigations and the continuation of long-term observations. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2169-897X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81ba7cfa382267225fb50189fed2797d https://hdl.handle.net/1871.1/089616f1-03e3-404c-a151-8da733f3d06f |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....81ba7cfa382267225fb50189fed2797d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 2169897X |
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