Skip to Main content Skip to Navigation
Journal articles

Modelling the stratospheric budget of beryllium isotopes

Abstract : A global 2-D (latitude–altitude) model describing both the stratospheric circulation and the detailed formation and growth of stratospheric aerosols is used to simulate the stratospheric cycle of cosmogenic isotopes of beryllium, Be-7 and Be-10. These isotopes have been extensively used as tracers of stratospheric air, as well as of solar variability. The simulation of these isotopes is used to quantify the relative importance of transport, microphysic processes related to aerosols, and radioactive decay, on their concentrations. Calculations of model budget show that the vertical transfer of these isotopes due to the aerosol sedimentation contributes to about half of the stratospheric Be-10 flux into the troposphere, but is negligible for the Be-7 budget. The simulated residence time of these isotopes in the lower stratosphere is monotonically related to the age of air; however, this relationship is neither linear nor uniform, which biases the age of air inferred from these isotopes.
Complete list of metadatas

Cited literature [47 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-01223156
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Tuesday, November 3, 2015 - 9:32:38 AM
Last modification on : Wednesday, September 23, 2020 - 4:33:42 AM
Long-term archiving on: : Thursday, February 4, 2016 - 10:44:11 AM

File

28582-169869-1-PB.pdf
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Gilles Delaygue, Slimane Bekki, Edouard Bard. Modelling the stratospheric budget of beryllium isotopes. Tellus B - Chemical and Physical Meteorology, Taylor & Francis, 2015, 67, pp.28582. ⟨10.3402/tellusb.v67.28582⟩. ⟨hal-01223156⟩

Share

Metrics

Record views

1117

Files downloads

633